structure of a scientific presentation

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How to make a scientific presentation

Scientific presentation outlines

Questions to ask yourself before you write your talk, 1. how much time do you have, 2. who will you speak to, 3. what do you want the audience to learn from your talk, step 1: outline your presentation, step 2: plan your presentation slides, step 3: make the presentation slides, slide design, text elements, animations and transitions, step 4: practice your presentation, final thoughts, frequently asked questions about preparing scientific presentations, related articles.

A good scientific presentation achieves three things: you communicate the science clearly, your research leaves a lasting impression on your audience, and you enhance your reputation as a scientist.

But, what is the best way to prepare for a scientific presentation? How do you start writing a talk? What details do you include, and what do you leave out?

It’s tempting to launch into making lots of slides. But, starting with the slides can mean you neglect the narrative of your presentation, resulting in an overly detailed, boring talk.

The key to making an engaging scientific presentation is to prepare the narrative of your talk before beginning to construct your presentation slides. Planning your talk will ensure that you tell a clear, compelling scientific story that will engage the audience.

In this guide, you’ll find everything you need to know to make a good oral scientific presentation, including:

• The different types of oral scientific presentations and how they are delivered;
• How to outline a scientific presentation;
• How to make slides for a scientific presentation.

Our advice results from delving into the literature on writing scientific talks and from our own experiences as scientists in giving and listening to presentations. We provide tips and best practices for giving scientific talks in a separate post.

There are two main types of scientific talks:

• Your talk focuses on a single study . Typically, you tell the story of a single scientific paper. This format is common for short talks at contributed sessions in conferences.
• Your talk describes multiple studies. You tell the story of multiple scientific papers. It is crucial to have a theme that unites the studies, for example, an overarching question or problem statement, with each study representing specific but different variations of the same theme. Typically, PhD defenses, invited seminars, lectures, or talks for a prospective employer (i.e., “job talks”) fall into this category.

➡️ Learn how to prepare an excellent thesis defense

The length of time you are allotted for your talk will determine whether you will discuss a single study or multiple studies, and which details to include in your story.

The background and interests of your audience will determine the narrative direction of your talk, and what devices you will use to get their attention. Will you be speaking to people specializing in your field, or will the audience also contain people from disciplines other than your own? To reach non-specialists, you will need to discuss the broader implications of your study outside your field.

The needs of the audience will also determine what technical details you will include, and the language you will use. For example, an undergraduate audience will have different needs than an audience of seasoned academics. Students will require a more comprehensive overview of background information and explanations of jargon but will need less technical methodological details.

Your goal is to speak to the majority. But, make your talk accessible to the least knowledgeable person in the room.

This is called the thesis statement, or simply the “take-home message”. Having listened to your talk, what message do you want the audience to take away from your presentation? Describe the main idea in one or two sentences. You want this theme to be present throughout your presentation. Again, the thesis statement will depend on the audience and the type of talk you are giving.

Your thesis statement will drive the narrative for your talk. By deciding the take-home message you want to convince the audience of as a result of listening to your talk, you decide how the story of your talk will flow and how you will navigate its twists and turns. The thesis statement tells you the results you need to show, which subsequently tells you the methods or studies you need to describe, which decides the angle you take in your introduction.

➡️ Learn how to write a thesis statement

The goal of your talk is that the audience leaves afterward with a clear understanding of the key take-away message of your research. To achieve that goal, you need to tell a coherent, logical story that conveys your thesis statement throughout the presentation. You can tell your story through careful preparation of your talk.

Preparation of a scientific presentation involves three separate stages: outlining the scientific narrative, preparing slides, and practicing your delivery. Making the slides of your talk without first planning what you are going to say is inefficient.

Here, we provide a 4 step guide to writing your scientific presentation:

• Outline your presentation
• Plan your presentation slides
• Make the presentation slides
• Practice your presentation

Writing an outline helps you consider the key pieces of your talk and how they fit together from the beginning, preventing you from forgetting any important details. It also means you avoid changing the order of your slides multiple times, saving you time.

Plan your talk as discrete sections. In the table below, we describe the sections for a single study talk vs. a talk discussing multiple studies:

The following tips apply when writing the outline of a single study talk. You can easily adapt this framework if you are writing a talk discussing multiple studies.

Introduction: Writing the introduction can be the hardest part of writing a talk. And when giving it, it’s the point where you might be at your most nervous. But preparing a good, concise introduction will settle your nerves.

The introduction tells the audience the story of why you studied your topic. A good introduction succinctly achieves four things, in the following order.

• It gives a broad perspective on the problem or topic for people in the audience who may be outside your discipline (i.e., it explains the big-picture problem motivating your study).
• It describes why you did the study, and why the audience should care.
• It gives a brief indication of how your study addressed the problem and provides the necessary background information that the audience needs to understand your work.
• It indicates what the audience will learn from the talk, and prepares them for what will come next.

A good introduction not only gives the big picture and motivations behind your study but also concisely sets the stage for what the audience will learn from the talk (e.g., the questions your work answers, and/or the hypotheses that your work tests). The end of the introduction will lead to a natural transition to the methods.

Give a broad perspective on the problem. The easiest way to start with the big picture is to think of a hook for the first slide of your presentation. A hook is an opening that gets the audience’s attention and gets them interested in your story. In science, this might take the form of a why, or a how question, or it could be a statement about a major problem or open question in your field. Other examples of hooks include quotes, short anecdotes, or interesting statistics.

Why should the audience care? Next, decide on the angle you are going to take on your hook that links to the thesis of your talk. In other words, you need to set the context, i.e., explain why the audience should care. For example, you may introduce an observation from nature, a pattern in experimental data, or a theory that you want to test. The audience must understand your motivations for the study.

Supplementary details. Once you have established the hook and angle, you need to include supplementary details to support them. For example, you might state your hypothesis. Then go into previous work and the current state of knowledge. Include citations of these studies. If you need to introduce some technical methodological details, theory, or jargon, do it here.

Conclude your introduction. The motivation for the work and background information should set the stage for the conclusion of the introduction, where you describe the goals of your study, and any hypotheses or predictions. Let the audience know what they are going to learn.

Methods: The audience will use your description of the methods to assess the approach you took in your study and to decide whether your findings are credible. Tell the story of your methods in chronological order. Use visuals to describe your methods as much as possible. If you have equations, make sure to take the time to explain them. Decide what methods to include and how you will show them. You need enough detail so that your audience will understand what you did and therefore can evaluate your approach, but avoid including superfluous details that do not support your main idea. You want to avoid the common mistake of including too much data, as the audience can read the paper(s) later.

Results: This is the evidence you present for your thesis. The audience will use the results to evaluate the support for your main idea. Choose the most important and interesting results—those that support your thesis. You don’t need to present all the results from your study (indeed, you most likely won’t have time to present them all). Break down complex results into digestible pieces, e.g., comparisons over multiple slides (more tips in the next section).

Summary: Summarize your main findings. Displaying your main findings through visuals can be effective. Emphasize the new contributions to scientific knowledge that your work makes.

Conclusion: Complete the circle by relating your conclusions to the big picture topic in your introduction—and your hook, if possible. It’s important to describe any alternative explanations for your findings. You might also speculate on future directions arising from your research. The slides that comprise your conclusion do not need to state “conclusion”. Rather, the concluding slide title should be a declarative sentence linking back to the big picture problem and your main idea.

It’s important to end well by planning a strong closure to your talk, after which you will thank the audience. Your closing statement should relate to your thesis, perhaps by stating it differently or memorably. Avoid ending awkwardly by memorizing your closing sentence.

By now, you have an outline of the story of your talk, which you can use to plan your slides. Your slides should complement and enhance what you will say. Use the following steps to prepare your slides.

• Write the slide titles to match your talk outline. These should be clear and informative declarative sentences that succinctly give the main idea of the slide (e.g., don’t use “Methods” as a slide title). Have one major idea per slide. In a YouTube talk on designing effective slides , researcher Michael Alley shows examples of instructive slide titles.
• Decide how you will convey the main idea of the slide (e.g., what figures, photographs, equations, statistics, references, or other elements you will need). The body of the slide should support the slide’s main idea.
• Under each slide title, outline what you want to say, in bullet points.

In sum, for each slide, prepare a title that summarizes its major idea, a list of visual elements, and a summary of the points you will make. Ensure each slide connects to your thesis. If it doesn’t, then you don’t need the slide.

Slides for scientific presentations have three major components: text (including labels and legends), graphics, and equations. Here, we give tips on how to present each of these components.

• Have an informative title slide. Include the names of all coauthors and their affiliations. Include an attractive image relating to your study.
• Make the foreground content of your slides “pop” by using an appropriate background. Slides that have white backgrounds with black text work well for small rooms, whereas slides with black backgrounds and white text are suitable for large rooms.
• The layout of your slides should be simple. Pay attention to how and where you lay the visual and text elements on each slide. It’s tempting to cram information, but you need lots of empty space. Retain space at the sides and bottom of your slides.
• Use sans serif fonts with a font size of at least 20 for text, and up to 40 for slide titles. Citations can be in 14 font and should be included at the bottom of the slide.
• Use bold or italics to emphasize words, not underlines or caps. Keep these effects to a minimum.
• Use concise text . You don’t need full sentences. Convey the essence of your message in as few words as possible. Write down what you’d like to say, and then shorten it for the slide. Remove unnecessary filler words.
• Text blocks should be limited to two lines. This will prevent you from crowding too much information on the slide.
• Include names of technical terms in your talk slides, especially if they are not familiar to everyone in the audience.
• Proofread your slides. Typos and grammatical errors are distracting for your audience.
• Include citations for the hypotheses or observations of other scientists.
• Good figures and graphics are essential to sustain audience interest. Use graphics and photographs to show the experiment or study system in action and to explain abstract concepts.
• Don’t use figures straight from your paper as they may be too detailed for your talk, and details like axes may be too small. Make new versions if necessary. Make them large enough to be visible from the back of the room.
• Use graphs to show your results, not tables. Tables are difficult for your audience to digest! If you must present a table, keep it simple.
• Label the axes of graphs and indicate the units. Label important components of graphics and photographs and include captions. Include sources for graphics that are not your own.
• Explain all the elements of a graph. This includes the axes, what the colors and markers mean, and patterns in the data.
• Use colors in figures and text in a meaningful, not random, way. For example, contrasting colors can be effective for pointing out comparisons and/or differences. Don’t use neon colors or pastels.
• Use thick lines in figures, and use color to create contrasts in the figures you present. Don’t use red/green or red/blue combinations, as color-blind audience members can’t distinguish between them.
• Arrows or circles can be effective for drawing attention to key details in graphs and equations. Add some text annotations along with them.
• Write your summary and conclusion slides using graphics, rather than showing a slide with a list of bullet points. Showing some of your results again can be helpful to remind the audience of your message.
• If your talk has equations, take time to explain them. Include text boxes to explain variables and mathematical terms, and put them under each term in the equation.
• Combine equations with a graphic that shows the scientific principle, or include a diagram of the mathematical model.
• Use animations judiciously. They are helpful to reveal complex ideas gradually, for example, if you need to make a comparison or contrast or to build a complicated argument or figure. For lists, reveal one bullet point at a time. New ideas appearing sequentially will help your audience follow your logic.
• Slide transitions should be simple. Silly ones distract from your message.
• Decide how you will make the transition as you move from one section of your talk to the next. For example, if you spend time talking through details, provide a summary afterward, especially in a long talk. Another common tactic is to have a “home slide” that you return to multiple times during the talk that reinforces your main idea or message. In her YouTube talk on designing effective scientific presentations , Stanford biologist Susan McConnell suggests using the approach of home slides to build a cohesive narrative.

To deliver a polished presentation, it is essential to practice it. Here are some tips.

• For your first run-through, practice alone. Pay attention to your narrative. Does your story flow naturally? Do you know how you will start and end? Are there any awkward transitions? Do animations help you tell your story? Do your slides help to convey what you are saying or are they missing components?
• Next, practice in front of your advisor, and/or your peers (e.g., your lab group). Ask someone to time your talk. Take note of their feedback and the questions that they ask you (you might be asked similar questions during your real talk).
• Edit your talk, taking into account the feedback you’ve received. Eliminate superfluous slides that don’t contribute to your takeaway message.
• Practice as many times as needed to memorize the order of your slides and the key transition points of your talk. However, don’t try to learn your talk word for word. Instead, memorize opening and closing statements, and sentences at key junctures in the presentation. Your presentation should resemble a serious but spontaneous conversation with the audience.
• Practicing multiple times also helps you hone the delivery of your talk. While rehearsing, pay attention to your vocal intonations and speed. Make sure to take pauses while you speak, and make eye contact with your imaginary audience.
• Make sure your talk finishes within the allotted time, and remember to leave time for questions. Conferences are particularly strict on run time.
• Anticipate questions and challenges from the audience, and clarify ambiguities within your slides and/or speech in response.
• If you anticipate that you could be asked questions about details but you don’t have time to include them, or they detract from the main message of your talk, you can prepare slides that address these questions and place them after the final slide of your talk.

➡️ More tips for giving scientific presentations

An organized presentation with a clear narrative will help you communicate your ideas effectively, which is essential for engaging your audience and conveying the importance of your work. Taking time to plan and outline your scientific presentation before writing the slides will help you manage your nerves and feel more confident during the presentation, which will improve your overall performance.

A good scientific presentation has an engaging scientific narrative with a memorable take-home message. It has clear, informative slides that enhance what the speaker says. You need to practice your talk many times to ensure you deliver a polished presentation.

First, consider who will attend your presentation, and what you want the audience to learn about your research. Tailor your content to their level of knowledge and interests. Second, create an outline for your presentation, including the key points you want to make and the evidence you will use to support those points. Finally, practice your presentation several times to ensure that it flows smoothly and that you are comfortable with the material.

Prepare an opening that immediately gets the audience’s attention. A common device is a why or a how question, or a statement of a major open problem in your field, but you could also start with a quote, interesting statistic, or case study from your field.

Scientific presentations typically either focus on a single study (e.g., a 15-minute conference presentation) or tell the story of multiple studies (e.g., a PhD defense or 50-minute conference keynote talk). For a single study talk, the structure follows the scientific paper format: Introduction, Methods, Results, Summary, and Conclusion, whereas the format of a talk discussing multiple studies is more complex, but a theme unifies the studies.

Ensure you have one major idea per slide, and convey that idea clearly (through images, equations, statistics, citations, video, etc.). The slide should include a title that summarizes the major point of the slide, should not contain too much text or too many graphics, and color should be used meaningfully.

Home Blog Education How to Prepare Your Scientific Presentation

How to Prepare Your Scientific Presentation

Since the dawn of time, humans were eager to find explanations for the world around them. At first, our scientific method was very simplistic and somewhat naive. We observed and reflected. But with the progressive evolution of research methods and thinking paradigms, we arrived into the modern era of enlightenment and science. So what represents the modern scientific method and how can you accurately share and present your research findings to others? These are the two fundamental questions we attempt to answer in this post. 

What is the Scientific Method?

To better understand the concept, let’s start with this scientific method definition from the International Encyclopedia of Human Geography :

The scientific method is a way of conducting research, based on theory construction, the generation of testable hypotheses, their empirical testing, and the revision of theory if the hypothesis is rejected. 

Essentially, a scientific method is a cumulative term, used to describe the process any scientist uses to objectively interpret the world (and specific phenomenon) around them. 

The scientific method is the opposite of beliefs and cognitive biases — mostly irrational, often unconscious, interpretations of different occurrences that we lean on as a mental shortcut. 

The scientific method in research, on the contrary, forces the thinker to holistically assess and test our approaches to interpreting data. So that they could gain consistent and non-arbitrary results. 

The common scientific method examples are:

• Systematic observation 
• Experimentation
• Inductive and deductive reasoning
• Formation and testing of hypotheses and theories

All of the above are used by both scientists and businesses to make better sense of the data and/or phenomenon at hand. 

The Evolution of the Scientific Method 

According to the Stanford Encyclopedia of Philosophy , ancient thinkers such as Plato and Aristotle are believed to be the forefathers of the scientific method. They were among the first to try to justify and refine their thought process using the scientific method experiments and deductive reasoning. 

Both developed specific systems for knowledge acquisition and processing. For example, the Platonic way of knowledge emphasized reasoning as the main method for learning but downplayed the importance of observation. The Aristotelian corpus of knowledge, on the contrary, said that we must carefully observe the natural world to discover its fundamental principles. 

In medieval times, thinkers such as Thomas Aquinas, Roger Bacon, and Andreas Vesalius among many others worked on further clarifying how we can obtain proven knowledge through observation and induction. 

The 16th–18th centuries are believed to have given the greatest advances in terms of scientific method application. We, humans, learned to better interpret the world around us from mechanical, biological, economic, political, and medical perspectives. Thinkers such as Galileo Galilei, Francis Bacon, and their followers also increasingly switched to a tradition of explaining everything through mathematics, geometry, and numbers. 

Up till today, mathematical and mechanical explanations remain the core parts of the scientific method. 

Why is the Scientific Method Important Today? 

Because our ancestors didn’t have as much data as we do. We now live in the era of paramount data accessibility and connectivity, where over 2.5 quintillions of data are produced each day. This has tremendously accelerated knowledge creation.

But, at the same time, such overwhelming exposure to data made us more prone to external influences, biases, and false beliefs. These can jeopardize the objectivity of any research you are conducting. 

Scientific findings need to remain objective, verifiable, accurate, and consistent. Diligent usage of scientific methods in modern business and science helps ensure proper data interpretation, results replication, and undisputable validity. 

6 Steps of the Scientific Method

Over the course of history, the scientific method underwent many interactions. Yet, it still carries some of the integral steps our ancestors used to analyze the world such as observation and inductive reasoning. However, the modern scientific method steps differ a bit. 

1. Make an Observation 

An observation serves as a baseline for your research. There are two important characteristics for a good research observation:

• It must be objective, not subjective. 
• It must be verifiable, meaning others can say it’s true or false with this. 

For example, This apple is red (objective/verifiable observation). This apple is delicious (subjective, harder-to-verify observation).

2. Develop a Hypothesis

Observations tell us about the present or past. But the goal of science is to glean in the future. A scientific hypothesis is based on prior knowledge and produced through reasoning as an attempt to descriptive a future event.

Here are characteristics of a good scientific hypothesis: 

• General and tentative idea
• Agrees with all available observations
• Testable and potentially falsifiable

Remember: If we state our hypothesis to indicate there is no effect, our hypothesis is a cause-and-effect relationship . A hypothesis, which asserts no effect, is called a null hypothesis. 

3. Make a Prediction 

A hypothesis is a mental “launchpad” for predicting the existence of other phenomena or quantitative results of new observations.

Going back to an earlier example here’s how to turn it into a hypothesis and a potential prediction for proving it. For example: If this apple is red, other apples of this type should be red too. 

Your goal is then to decide which variables can help you prove or disprove your hypothesis and prepare to test these. 

4. Perform an Experiment 

Collect all the information around variables that will help you prove or disprove your prediction. According to the scientific method, a hypothesis has to be discarded or modified if its predictions are clearly and repeatedly incompatible with experimental results.

Yes, you may come up with an elegant theory. However, if your hypothetical predictions cannot be backed by experimental results, you cannot use them as a valid explanation of the phenomenon. 

5. Analyze the Results of the Experiment

To come up with proof for your hypothesis, use different statistical analysis methods to interpret the meaning behind your data.

Remember to stay objective and emotionally unattached to your results. If 95 apples turned red, but 5 were yellow, does it disprove your hypothesis? Not entirely. It may mean that you didn’t account for all variables and must adapt the parameters of your experiment. 

Here are some common data analysis techniques, used as a part of a scientific method: 

• Statistical analysis
• Cause and effect analysis (see cause and effect analysis slides )
• Regression analysis
• Factor analysis
• Cluster analysis
• Time series analysis
• Diagnostic analysis
• Root cause analysis (see root cause analysis slides )

6. Draw a Conclusion 

Every experiment has two possible outcomes:

• The results correspond to the prediction
• The results disprove the prediction 

If that’s the latter, as a scientist you must discard the prediction then and most likely also rework the hypothesis based on it. 

How to Give a Scientific Presentation to Showcase Your Methods

Whether you are doing a poster session, conference talk, or follow-up presentation on a recently published journal article, most of your peers need to know how you’ve arrived at the presented conclusions.

In other words, they will probe your scientific method for gaps to ensure that your results are fair and possible to replicate. So that they could incorporate your theories in their research too. Thus your scientific presentation must be sharp, on-point, and focus clearly on your research approaches. 

Below we propose a quick framework for creating a compelling scientific presentation in PowerPoint (+ some helpful templates!). 

1. Open with a Research Question 

Here’s how to start a scientific presentation with ease: share your research question. On the first slide, briefly recap how your thought process went. Briefly state what was the underlying aim of your research: Share your main hypothesis, mention if you could prove or disprove them. 

It might be tempting to pack a lot of ideas into your first slide but don’t. Keep the opening of your presentation short to pique the audience’s initial interest and set the stage for the follow-up narrative.

2. Disclose Your Methods

Whether you are doing a science poster presentation or conference talk, many audience members would be curious to understand how you arrived at your results. Deliver this information at the beginning of your presentation to avoid any ambiguities. 

Here’s how to organize your science methods on a presentation: 

• Do not use bullet points or full sentences. Use diagrams and structured images to list the methods
• Use visuals and iconography to use metaphors where possible.
• Organize your methods by groups e.g. quantifiable and non-quantifiable

Finally, when you work on visuals for your presentation — charts, graphs, illustrations, etc. — think from the perspective of a subject novice. Does the image really convey the key information around the subject? Does it help break down complex ideas?

3. Spotlight the Results 

Obviously, the research results will be your biggest bragging right. However, don’t over-pack your presentation with a long-winded discussion of your findings and how revolutionary these may be for the community. 

Rather than writing a wall of text, do this instead:

• Use graphs with large axis values/numbers to showcase the findings in great detail
• Prioritize formats that are known to everybody (e.g. odds ratios, Kaplan Meier curves, etc.)
• Do not include more than 5 lines of plain text per slide 

Overall, when you feel that the results slide gets too cramped, it’s best to move the data to a new one. 

Also, as you work on organizing data on your scientific presentation PowerPoint template , think if there are obvious limitations and gaps. If yes, make sure you acknowledge them during your speech.

4. Mention Study Limitations 

The scientific method mandates objectivity. That’s why every researcher must clearly state what was excluded from their study. Remember: no piece of scientific research is truly universal and has certain boundaries. However, when you fail to personally state those, others might struggle to draw the line themselves and replicate your results. Then, if they fail to do so, they’d question the viability of your research.

5. Conclude with a Memorable Takeaway Message 

Every experienced speaker will tell you that the audience best retains the information they hear first and last. Most people will attend more than one scientific presentation during the day. 

So if you want the audience to better remember your talk, brainstorm a take-home message for the last slide of your presentation. Think of your last slide texts as an elevator pitch — a short, concluding message, summarizing your research.

To Conclude

Today we have no shortage of research and scientific methods for testing and proving our hypothesis. However, unlike our ancestors, most scientists experience deeper scrutiny when it comes to presenting and explaining their findings to others. That’s why it’s important to ensure that your scientific presentation clearly relays the aim, vector, and thought process behind your research.

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How to prepare and deliver an effective oral presentation

• Related content
• Peer review
• Lucia Hartigan , registrar 1 ,
• Fionnuala Mone , fellow in maternal fetal medicine 1 ,
• Mary Higgins , consultant obstetrician 2
• 1 National Maternity Hospital, Dublin, Ireland
• 2 National Maternity Hospital, Dublin; Obstetrics and Gynaecology, Medicine and Medical Sciences, University College Dublin
• luciahartigan{at}hotmail.com

The success of an oral presentation lies in the speaker’s ability to transmit information to the audience. Lucia Hartigan and colleagues describe what they have learnt about delivering an effective scientific oral presentation from their own experiences, and their mistakes

The objective of an oral presentation is to portray large amounts of often complex information in a clear, bite sized fashion. Although some of the success lies in the content, the rest lies in the speaker’s skills in transmitting the information to the audience. 1

Preparation

It is important to be as well prepared as possible. Look at the venue in person, and find out the time allowed for your presentation and for questions, and the size of the audience and their backgrounds, which will allow the presentation to be pitched at the appropriate level.

See what the ambience and temperature are like and check that the format of your presentation is compatible with the available computer. This is particularly important when embedding videos. Before you begin, look at the video on stand-by and make sure the lights are dimmed and the speakers are functioning.

For visual aids, Microsoft PowerPoint or Apple Mac Keynote programmes are usual, although Prezi is increasing in popularity. Save the presentation on a USB stick, with email or cloud storage backup to avoid last minute disasters.

When preparing the presentation, start with an opening slide containing the title of the study, your name, and the date. Begin by addressing and thanking the audience and the organisation that has invited you to speak. Typically, the format includes background, study aims, methodology, results, strengths and weaknesses of the study, and conclusions.

If the study takes a lecturing format, consider including “any questions?” on a slide before you conclude, which will allow the audience to remember the take home messages. Ideally, the audience should remember three of the main points from the presentation. 2

Have a maximum of four short points per slide. If you can display something as a diagram, video, or a graph, use this instead of text and talk around it.

Animation is available in both Microsoft PowerPoint and the Apple Mac Keynote programme, and its use in presentations has been demonstrated to assist in the retention and recall of facts. 3 Do not overuse it, though, as it could make you appear unprofessional. If you show a video or diagram don’t just sit back—use a laser pointer to explain what is happening.

Rehearse your presentation in front of at least one person. Request feedback and amend accordingly. If possible, practise in the venue itself so things will not be unfamiliar on the day. If you appear comfortable, the audience will feel comfortable. Ask colleagues and seniors what questions they would ask and prepare responses to these questions.

It is important to dress appropriately, stand up straight, and project your voice towards the back of the room. Practise using a microphone, or any other presentation aids, in advance. If you don’t have your own presenting style, think of the style of inspirational scientific speakers you have seen and imitate it.

Try to present slides at the rate of around one slide a minute. If you talk too much, you will lose your audience’s attention. The slides or videos should be an adjunct to your presentation, so do not hide behind them, and be proud of the work you are presenting. You should avoid reading the wording on the slides, but instead talk around the content on them.

Maintain eye contact with the audience and remember to smile and pause after each comment, giving your nerves time to settle. Speak slowly and concisely, highlighting key points.

Do not assume that the audience is completely familiar with the topic you are passionate about, but don’t patronise them either. Use every presentation as an opportunity to teach, even your seniors. The information you are presenting may be new to them, but it is always important to know your audience’s background. You can then ensure you do not patronise world experts.

To maintain the audience’s attention, vary the tone and inflection of your voice. If appropriate, use humour, though you should run any comments or jokes past others beforehand and make sure they are culturally appropriate. Check every now and again that the audience is following and offer them the opportunity to ask questions.

Finishing up is the most important part, as this is when you send your take home message with the audience. Slow down, even though time is important at this stage. Conclude with the three key points from the study and leave the slide up for a further few seconds. Do not ramble on. Give the audience a chance to digest the presentation. Conclude by acknowledging those who assisted you in the study, and thank the audience and organisation. If you are presenting in North America, it is usual practice to conclude with an image of the team. If you wish to show references, insert a text box on the appropriate slide with the primary author, year, and paper, although this is not always required.

Answering questions can often feel like the most daunting part, but don’t look upon this as negative. Assume that the audience has listened and is interested in your research. Listen carefully, and if you are unsure about what someone is saying, ask for the question to be rephrased. Thank the audience member for asking the question and keep responses brief and concise. If you are unsure of the answer you can say that the questioner has raised an interesting point that you will have to investigate further. Have someone in the audience who will write down the questions for you, and remember that this is effectively free peer review.

Be proud of your achievements and try to do justice to the work that you and the rest of your group have done. You deserve to be up on that stage, so show off what you have achieved.

Competing interests: We have read and understood the BMJ Group policy on declaration of interests and declare the following interests: None.

• ↵ Rovira A, Auger C, Naidich TP. How to prepare an oral presentation and a conference. Radiologica 2013 ; 55 (suppl 1): 2 -7S. OpenUrl
• ↵ Bourne PE. Ten simple rules for making good oral presentations. PLos Comput Biol 2007 ; 3 : e77 . OpenUrl PubMed
• ↵ Naqvi SH, Mobasher F, Afzal MA, Umair M, Kohli AN, Bukhari MH. Effectiveness of teaching methods in a medical institute: perceptions of medical students to teaching aids. J Pak Med Assoc 2013 ; 63 : 859 -64. OpenUrl

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Presentation methods, delivering a presentation, study methods, discussion: transform, acknowledgements, how to prepare and deliver a scientific presentation : teaching course presentation at the 21st european stroke conference, lisboa, may 2012.

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Andrei V. Alexandrov , Michael G. Hennerici; How to Prepare and Deliver a Scientific Presentation : Teaching Course Presentation at the 21st European Stroke Conference, Lisboa, May 2012 . Cerebrovasc Dis 1 April 2013; 35 (3): 202–208. https://doi.org/10.1159/000346077

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Background: A scientific presentation is a professional way to share your observation, introduce a hypothesis, demonstrate and interpret the results of a study, or summarize what is learned or to be studied on the subject. Presentation Methods: Commonly, presentations at major conferences include podium (oral, platform), poster or lecture, and if selected one should be prepared to PRESENT: P lan from the start (place integral parts of the presentation in logical sequence); R educe the amount of text and visual aids to the bare minimum; E lucidate (clarify) methods; S ummarize results and key messages; E ffectively deliver; N ote all shortcomings, and T ransform your own and the current thinking of others. We provide tips on how to achieve this. Presentation Results: After disclosing conflicts, if applicable, start with a brief summary of what is known and why it is required to investigate the subject. State the research question or the purpose of the lecture. For original presentations follow a structure: Introduction, Methods, Results, Conclusions. Invest a sufficient amount of time or poster space in describing the study methods. Clearly organize and deliver the results or synopsis of relevant studies. Include absolute numbers and simple statistics before showing advanced analyses. Remember to present one point at a time. Stay focused. Discuss study limitations. In a lecture or a podium talk or when standing by your poster, always think clearly, have a logical plan, gain audience attention, make them interested in your subject, excite their own thinking about the problem, listen to questions and carefully weigh the evidence that would justify the punch-line. Conclusions: Rank scientific evidence in your presentation appropriately. What may seem obvious may turn erroneous or more complex. Rehearse your presentation before you deliver it at a conference. Challenge yourself to dry runs with your most critically thinking colleagues. When the time comes, ace it with a clear mind, precise execution and fund of knowledge.

Over time communication standards between -scientists have evolved along with improved scientific method, increasing scrutiny of analyses and upholding to the highest level of evidence anything we call research. Scientific presentation is a professional way of sharing your observation, introducing a hypothesis, demonstrating and interpreting the results of a study, or -summarizing what has been learned or is to be studied on the subject. Professional presentations help disseminate research, make peers aware of novel approaches, findings or problems. These presentations make conferences memorable for both presenters and the audience. Anyone can recall the most exciting and most boring, the most clear and most convoluted, the most ‘-seriously?!' and the most ‘wow!!' presentations. Most presentations, however, fall in the in-between level of ‘so what?', ‘I did not quite get it …', or ‘maybe'. This means that all the work the authors have put in did not result in a paradigm shift, -advancement, or even ‘well, this is good to know' kind of an impact. We struggle to shape up our young presenters to make their science clear and visible, their presence known and their own networks grow.

Having initially struggled in preparing and delivering presentations ourselves, and having seen the many baby steps of our trainees now accomplished or shy of a track record, we have put together these suggestions on how to start, organize and accomplish what at first sight looks like a daunting task: presenting in front of people, many of whom may have expertise way beyond your own or who are scrutinizing every bit of data and ready to shred any evidence you might have to pieces. Unfortunately, there is no other way to advance science and become recognized than to survive this campaign from conception of a project to publication. This campaign has its own (often interim and hopefully not singular) culmination in a scientific presentation. This presentation also comes with question and answer sessions and importantly, with you and the audience possibly coming out of it with new messages, new thinking and even energy for breakthroughs, no matter how small or large the leap would be. So let's explore how to prepare and deliver a scientific presentation.

Currently, the common types of presentations at major conferences include podium (oral, platform), poster or lecture. Although seemingly different and at times some being more desirable over others, they all share the same prerequisites and challenges for successful execution. We will examine common threads and identify unique aspects of each type of these presentations. However, the first prerequisite for any scientific presentation (successful or not) is you, the presenter.

An effective presenter should have led the study, participated in the analysis and drafting of the abstract and manuscript, i.e. the presenter should know the subject of his or her talk inside out. One should therefore be prepared to PRESENT:

P lan from the start (place integral parts of the presentation in logical sequence);

R educe the amount of text and visual aids to the bare minimum;

E lucidate (clarify) methods;

S ummarize results and key messages;

E ffectively deliver;

N ote all shortcomings, and

T ransform your own and the current thinking of others.

So, as the scuba-diving instructors say: plan the dive, and dive the plan. The most important parts of scientific presentations should follow the logic of delivering the key messages. For the original presentations (platforms or posters), it is easy to simply follow the accepted abstracts, most often structured following the IMRaD principle: Introduction, Methods, Results and Discussion (Conclusions).

Lecture format, content and logical flow of information often depend on the topic choice, which should be appropriate to the level of audience [ 1 ], time allotment and the target audience. Most competitive conferences offer short times even for invited lecturers as experts are expected to demonstrate cutting edge science, which assumes that the audience is already knowledgeable and the expert is capable of delivering information that sparks new thinking. The suggestion here to both novice and experienced speakers is to quickly summarize why the subject of presentation is important (catch audience attention [ 2,3 ]), where we are now (show the landscape of completed studies that established the common knowledge or conundrums, equipoise, etc.) and to move then to the latest advancements (this may include just-in publications, ongoing or planned future research or the most provocative take on the evidence out there).

Turning back to original presentations, advice is available on how to write abstracts following the IMRaD principle [ 4 ] and how to draft subsequent manuscripts [ 5 ]. We cannot stress enough the need to quickly follow-up the abstract submission with drafting the full manuscript. If the authors complete a manuscript before the presentation at a conference, the presenter will have a luxury of material to work with to compile either a set of slides for the podium or text and illustrations for the poster. If a manuscript was drafted and reviewed by coauthors, the challenge for a presenter is going to be a good one: trim down most sentences as both slides and posters benefit from short statements (not even full sentences) and large font sizes so that text can be easily read from a distance. Put yourself into the audience: your slides should be readable from the last row of a large room or a huge ballroom and your poster should be still readable from at least 2 m. The latter will allow better poster viewing by several people during guided poster tours or when a small group gathers spontaneously to view it.

This logically brings us to the second step: use bare minimum of any type of information to deliver your -presentation. Minimum text, minimum lines, minimum images, graphs, i.e. provide only the essential information as the audience attention span is short. Brevity, however, should not compromise quality: you should always stride to have the highest quality visual aids since these leave an impression on the audience [ 6 ] and good quality graphics are attributes of effective presentations [ 3 ].

At the same time, we cannot overemphasize the need to stick to time limits set for a specific presentation. Presenters should test their presentation in ‘real life' at home to their friends or at work in front of colleagues and ask for criticism. It is better to get criticism from members of the department (including your boss) than in a huge auditorium. Use a simple rule: an average talking time is 1 min per slide in oral presentations. You can then see how little you really can allocate to each slide if you load your talk with the most complicated visual presentation of data.

Let's go to the specifics. The ‘Introduction' slide usually includes a very brief description of background and should explicitly state the research question. Call it ‘Introduction and Study Purpose'. Adding a separate slide for study aims lengthens the talk. Fewer slides also reduce the chance of making an error when advancing them on the podium that can send presenters into further time deficit and stress, a commonplace even with those who know how to right-click.

Methods should have bullet points, not necessarily full sentences since you will be speaking over slides projecting or in front of the poster to connect brief statements showing behind you. The basic rule is not to read your slides or poster, nor tell the audience to read what the slide or poster says. Think of your slides or display material as a reminder to yourself of what you are supposed to say in detail and leave the noncritical words out of the slide and off the poster as it is an even easier source to pack with unreadable information. When you develop a presentation imagine you are a novice to the field who would like to be educated and taken on a journey while seeing and hearing the presentation. What can I learn in these few minutes? As the presenter, also think ‘what can I pass to the audience in these few minutes?' Further advice on how to plan, focus and arrange material to support key messages is available [ 7,8 ].

Results are the key part of any scientific presentation, podium, poster or lecture, and the most time, space and careful ascertainment should be allotted to this section as is necessary and feasible. It is vital to pack your presentation with data that support your key messages. Remember, a picture is worth a thousand words but show only quint-essential images or graphs. If appropriate include statistics and make this easy in structure, i.e. use formats or values known by everybody such as odds ratios, Kaplan Meier curves, etc. (do not forget to include these data in the abstract as abstracts without data, numbers and calculations are often low rated or rejected). After presenting data, show what you think of that or what the limitations are since you thought more about this than the audience, at least through preparation of your own presentation.

The last two concluding paragraphs (poster), comments (this section of a lecture), or slides (podium) are supposed to cover study limitations and conclusions. These should be the most carefully thought through, strategically worded and evidence-based part of your presentation. Your reputation depends on the quality of data interpretation. Also, think about a take-home message with the main message you want to be remembered. When practicing your presentations, deliver your talk to your nonmedical spouse, boyfriend or girlfriend: by the end of your presentation he or she should be able to repeat the take home message with best-prepared presentations.

After conclusions, an ‘Acknowledgements' slide is nice to have at the end showing whom you are grateful to, but it will not rescue a hopeless presentation. The ‘thanks to my colleagues' should not come at the expense of time, quality and content of your scientific presentation. There is no need to thank multiple people like they often do at the Oscars. You have to rationally consider who and when to acknowledge if their functions were important to your work but they were not listed among coauthors. If you received funding to support your work, it is very important where appropriate or at the end of the presentation to acknowledge your sponsors or grant providers (such as NIH Institute and grant number, MRC grant, INSERM or DFG labels, etc.). The higher the scientific level of the grant donors, the more your presentation will be recognized.

While preparing any part of your presentation, remind yourself to check whether the included material is any good and worthy of inclusion. You can simply ask, ‘am I wasting time during the oral presentation or space in the poster by including this and that?' The answer lies in checking if this material is directly related to the study aim, data obtained, or in support of conclusions drawn.

Table 1 summarizes how you should structure the sequence of slides for the podium presentation. If you are only given 8 min to present + 2 min for questions (10 min total), you can see that with 8 mandatory slides you are already at the limit of 1 min per slide. In due course, we will give you tips on how to reallocate time within your presentation to expand the Methods and, most importantly, the Results section as needed.

Basic structure for a podium presentation of an original paper

Always clarify study methods. Posters offer a greater freedom since you can show details of your experimental setup or the methodology of your study design. A podium presentation often requires abbreviated mention of key elements of design, scales, inclusion/exclusion criteria, intervention or dependent variables and outcomes. This requires diligent work with your coauthors and biostatisticians to make sure that you are brief but clear and sufficient.

A well-assembled Methods section will lead to a shorter Results summary since your clear statement of the study aim and key methodology logically leads to audience anticipation of the primary end-point findings. There are key messages and delivered data points that distinguish effective and clear presentations from those resulting in confusion and further guesswork.

Effective presenters capture audience attention and stay focused on key messages [ 1,2,3,6,7,8 ]. A study was performed at scientific conferences asking reviewers to identify the best features of effective presentations [ 3 . ]The most frequent comments on best features of presentations with respect to ‘content' were identifying a key concept (43% of presentations) and relevance (43%). Best features in evaluations of ‘slides' were clarity (50%), graphics (27.3%) and readability of the text and font size (23%). Finally, best features in ‘presentation style' were clarity (59%), pace (52%), voice (48%), engaging with the audience (43%), addressing questions (34%) and eye contact (28%) [ 3 ].

Here are some tips on how to avoid forcing yourself to rush during a talk. Before you start (usually in the intermission or just before your session) familiarize yourself with the podium and learn how to advance slides and operate the pointer or point with the mouse. If you stumble at the beginning, you start your presentation with a time deficit.

Get to the podium while you are being introduced and start right away (it is the responsibility of the moderator to properly announce you, your team and the title of the talk and it is the responsibility of the conference organizers to have your title slide showing during the moderator's announcement). Do not read or repeat your study title. Thank the moderators and while the title slide is showing you may consider briefly thanking your coauthors/mentor here in just a few seconds.

Show the ‘Conflicts of Interest' slide next and disclose if any conflicts are related to the study subject. If they exist, conflicts should be acknowledged briefly but clearly. Do not show a slide with several conflicts and tell the audience ‘here are my conflicts' and switch to the next slide. It is important to simply say, ‘pertinent to this study I have …' or ‘this study includes an off-label or investigational use of …'. Now you are logically ready to turn to the subject of your presentation.

Start with a brief summary of what is known and why is it important to investigate the subject. This -introduces the audience to the subject of research and starts the flow of logic. If you are facing a challenge to present a complex study within in a short allotted period of time (such as 8 min for podium or a just a few minutes during a guided poster tour), do not waste time. You may cut to the chase and simply say why you did the study. Coming with straight forward messages, which are authentic and concerned about the scientific question, gets you more credit with the audience than careful orchestration of a perceived equipoise. However, we have digressed.

For an effective message delivery, identify two people towards opposite far ends of the audience and speak as if you are personally talking to one of them at a time and alternate between them. If lights shining in your face are too bright, still look towards the back of the room (or from time to time directly into the camera if your talk is being shown on monitors in a large ballroom) and do not bury your head into the podium or notes that you might have brought with you. The nonverbal part of any presentation and the presenter's body language are also important [ 6 ]. At all cost avoid bringing notes with you to any scientific presentation since you should have practiced your talk enough to remember it or you should be familiar with the subject of your lecture to the point that even if you have just been woken up, you can still maintain an intelligent conversation. Do not count on ‘it will come to me' - practice your talk! Further advice on effective presenting skill is available [ 2 ].

Remember that at international conferences many attendees are not native English-speaking people. Thus speak slowly and train your voice for best possible pronunciation! This recommendation is applicable to natives of English-speaking countries too. Native English speakers from the UK, Commonwealth countries and the USA tend to speak fast, with a variety of accents that international audiences may not understand easily while the interpreters may not be able to keep up. When speaking, do not turn away from the audience and look at your slide projection on the main screen or at your poster all the time. If it is necessary to remind yourself what to talk about next, advance the slide, briefly glance at it, turn to the audience and continue your presentation. Turn to your slide again only if you have to use a laser pointer or a mouse on the computer screen. Do so briefly, underline the important finding, point to the key part of an image and avoid long circular pointer motions around the whole text line or big areas of graphic illustrations. It is distracting. Try to use the pointer only when necessary and do not read your slides with the pointer constantly aiming at where you are reading.

When presenting your methods, clearly state the type of study, e.g. retrospective analysis, case series, -cohort or controlled trials, etc., and describe patient inclusion/exclusion criteria. If too numerous, only list the major ones. As an example, in a clinical trial of a fibrinolytic agent the list of exclusion criteria could be very extensive, so how can you present this on a dime? Your slide should focus on the key inclusion criteria since a patient who did not have those was obviously excluded, and an audience at a stroke conference is generally familiar with multiple exclusion criteria for tissue plasminogen activator treatment. So, your slide or poster may have the following in it (highlighted in bold ) to which you may add the plain text in your (limited) verbal statements:

Our Major Inclusion Criteria: were

• total Pre-treatment NIHSS score >6 points

• Presence of mismatch on MRI determined by -( EPTITHET ) trial criteria

• Age <80 years and

• Time from symptom onset <8 h

After that, you may omit including a slide with the long list of exclusions in favor of time. If there is a -specific contraindication new to the treatment agent in your study, you could say ‘in addition to well-known contraindications for systemic thrombolysis, patients were excluded if they had …' at the end of showing the ‘Major Inclusion Criteria' slide as shown above. Similarly, in a poster, list only the most relevant inclusion and exclusion criteria and walk the audience through the methods without stumbling on too many detail -disclosures. The audience will lose track of where you are going.

It is important to keep a balance between sufficient disclosure of study methods and the length of this part of your presentation. It is always helpful if you have a prior study that used a similar or from which you developed your methodology that has already been published - you may show a reference to this study and move on faster without sacrificing the quality. For example, ‘ultrasound tests were done by experienced sonographers using a previously published standard protocol', ‘CT scans were read independently using the ASPECTS score', and ‘sICH was defined by the SITS-MOST criteria'. Say this while showing or pointing to the line and published source reference on your visual aid.

Clearly organize and deliver the Results section. Include absolute numbers and simple statistics before showing advanced analyses. Remember not to show data in Methods and equally so do not introduce new methods when presenting Results. As a rule, describe characteristics of the general study population or balance/imbalances between target and control groups. Follow this by a slide that shows the primary end-point findings or observations that directly address the study aim or research question. This follows the logic of a scientific presentation and will help you avoid deviations to side observations no matter how unexpected or valuable they seem. Stay the course, address the main question first and only then show additional findings. When presenting a poster, point to the area where the key results are displayed. Unlike a slide presentation or lecture where the audience is forced to see one slide at a time, busy posters could be distracting. Posters that are heavily packed with graphs, images, tables and text are often difficult to follow during a brief guided poster presentation tour. It is the presenter's responsibility to drive the audience attention to key results in a logical sequence. When you present a graph, start by telling the audience what is shown and in what units on each access, and briefly point to the numbers on each axis.

Remember to present one point at a time. It makes common sense but sometimes may be difficult to follow if complex experiments or studies with multiple confounding variables have to be navigated through a brief presentation. Do not lose sight of your original research question or the objective of your lecture. Remember what you have shown so far, and what logically should be shown next. If you are pressed on time or made a mistake while advancing slides, take a deep breath and relax. Clear state of mind will buy you time. Racing thoughts such as ‘I have to cover that and that, and oh, that too' are not helpful. Dry runs, or practice presentations are essential for you to master the material that you need to present.

After finishing the Results part of your presentation, remember not to introduce more new results in Discussion and Conclusions. That surprise is hard for the audience to process. If you'd like to reemphasize the main finding, use the following suggestion. Let's say your goal was to show the prevalence of a new syndrome in your study population and you found it to be 24% (your primary research question). Unexpectedly, you also found that patients with this syndrome have an increased risk of dying (RR 2.08, 95% CI 1.23-4.34). These numbers and statistics obviously belong to the Results section. However, you want to stress in your conclusion once again how important your finding is. You can present it as follows: ‘Conclusions: nearly a quarter of stroke patients can be affected by this new syndrome and, if present, it doubles the patient chance of dying in hospital'. This recaps the main finding and makes practical interpretation of the relative risk estimate.

Before you jump into Conclusions, however, we always encourage presenters to note and openly discuss current study limitations. This improves your own assessment for biases and ranking of the level of obtained evidence. If you do not disclose the obvious study limitations, you will most likely receive questions after your presentation that will point to these shortcomings. Thus, instead of a positive discussion of how your study advances our knowledge, the discussion with the audience will focus on shortcomings and the key message may be lost with the negative audience response. Unlike Twitter™ or future media-based quick popularity scores, science can only advance when it endures the highest scrutiny (even though in the future presenters may be concurrently judged by the audience as our technologies improve). Regardless, if you are a good scientist, prepare yourself to stand the ground if the evidence is behind you. Be proactive, acknowledge study limitations and how you attempted to control for biases, etc.

In a lecture or a podium talk or when standing by your poster, always think clearly, have a logical plan for presentation parts that should be covered next, gain audience attention, make them interested in your subject, excite their own thinking about the problem, listen to questions and carefully weigh the evidence that would justify the punch-line. This will support your conclusions!

With posters, we often see a Discussion section but no conclusions listed, or they are listed in the abstract but not in the poster itself. This will lead to an obvious question after you stop presenting: ‘So, what is your take on this?' Our advice is, have your conclusions listed and be prepared to defend them point-by-point as the question and answer part could be challenging. If you do not understand the question, ask for clarification rather than talk nonsense.

To arrive at the right conclusions, you have to rank scientific evidence in your presentation appropriately. What may seem obvious may turn erroneous or more complex at a closer look by experts. Helpful hints here include you maintaining careful documentation while you are conceiving the project, designing it with your colleagues and consulting with a biostatistician on all steps taken in ascertaining the study population, interventions, end-point data collection and bias verification. Put all methodological issues against your findings and this will give you an idea of the strengths and weaknesses of your study. Preparing and delivering your presentation is a great experience to see if your knowledge and gained expertise stand up to peer scrutiny.

Rehearse your presentation before you deliver it at a conference. Challenge yourself to dry runs with your most critically thinking colleagues. Quite often, it is not the presentation itself but these questions, comments and subsequent late night debates with your colleagues that bring new thinking, advance our understanding and spark new ideas. This is the chance to transform your own current thinking and that of your peers. Think about your upcoming presentation, whether it is a podium, poster or lecture, as an opportunity, a launch pad, a reward for the hard work you did to bring this project to the attention of the scientific community.

When time comes, ace it with a clear mind, precise execution and fund of knowledge.

Before his first oral presentation in English, Dr. Alexandrov was nervous and asked his mentor, Dr. John W. Norris, for a dry run. Dr. Norris generously came to listen to him at 10 p.m. the night before, and Dr. Alexandrov survived his talk.

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The Art of a Scientific Presentation: Tips from Steve Jobs

Horiuchi, Sakura B.S.; Nasser, Jacob S. B.S.; Chung, Kevin C. M.D., M.S.

Washington, D.C.; and Ann Arbor, Mich.

From the George Washington School of Medicine and Health Sciences; and Section of Plastic Surgery, University of Michigan Medical School.

Received for publication April 27, 2021; accepted October 13, 2021.

Disclosure: Dr. Chung receives funding from the National Institutes of Health and book royalties from Wolters Kluwer and Elsevier. The remaining authors have no financial interests to declare .

Kevin C. Chung, M.D., M.S., Comprehensive Hand Center, Michigan Medicine, 1500 East Medical Center Drive, 2130 Taubman Center, SPC 5340, Ann Arbor, Mich. 48109-5340, [email protected] , Twitter: @kecchung

Presentations are commonly used to share knowledge in all scientific fields, particularly in medicine, where they play an integral role in medical school and graduate medical education as well as in medical society conferences and continuing medical education activities. Though the use of presentations as learning tools has become universal, how often are they truly effective ? Virtually everyone has experienced the jaw-clenching cringe while suffering through a particularly bad presentation, just as everyone has, one hopes, appreciated the vitality, insight, and inspiration that accompany a carefully constructed, well-delivered presentation. Creating effective presentations is a skill, a form of art, and an engineering process that requires time and practice; it is not an intuitive process.

Effective presentations begin by establishing a clear objective and a rapport with the audience. To be a physician is to be a teacher, and one must diagnose the audience’s needs. It is often helpful to acknowledge the inherent authoritarian structure of presenting, in which the speaker serves as commander and the audience as subordinates receiving the instruction. However, the manner in which the speaker approaches this relationship ultimately impacts the course and effectiveness of the presentation. In and of itself, a presentation simply delivers information; however, an effective presentation goes above and beyond to inspire and empower the audience receiving the message. The late tech titan Steve Jobs, cofounder and former chief executive officer of Apple, Inc., was known for delivering dynamic presentations that ultimately reinforced the success of the company and its products. Though many linked the quality of his presentations to his charisma, Jobs consciously incorporated effective presentation skills throughout his lectures, as described in the book Presentation Secrets of Steve Jobs , 1 many of which are translatable to medical education and highlighted in this article.

Kosslyn et al. conducted an empirical analysis of the psychological principles that underlie presentation flaws and failures, finding that communication principles were violated to a similar extent across different fields. 2 Furthermore, Garner and Alley, 3 and others, 4 , 5 have found that how a presentation is designed has the power to inhibit or support its effectiveness. Nonetheless, there is no recent research that examines the quality and effectiveness of presentations used in the field of medicine. Existing studies shed light on single presentation components, such as color themes or fonts, 6 , 7 but this research does not provide comprehensive guidance to help medical researchers and health care providers develop quality medical presentations.

A poorly constructed presentation detracts from its value. In this article, our goal is to identify strategies for creating effective scientific presentations for medical school lectures, resident lectures, surgical rounds, and medical conferences. We will provide examples specific to plastic surgery to better guide researchers and medical educators in the specialty in developing presentations. The strategies discussed come from the current literature on effective presentation strategies and the experiences of our research team. We aim to establish a comprehensive list to aid in creating a methodical approach for presenters to evaluate their own presentations to ensure a standard of quality and effectiveness.

PREPARATION

Constructing a story.

Creating an effective presentation is like taking a road trip, thus the first step is to create a clear map to your destination—and identify the landmarks you and your audience will pass along the way. A presenter must give clear instructions to the audience, which can be in the format of an outline or a story. Ultimately, one needs to know why this road trip will be worthwhile; in other words, the purpose and impact of the presentation should be clearly expressed.

Simple stories, whether in the form of a metaphor or case presentation, create an organizational framework that makes it easier for the audience to follow along. Creating a narrative—for surgeons, perhaps a story of a challenging case or difficult situation—will help the audience associate new information with preexisting mental representations. Graesser et al. examined whether text genre (i.e., narrative or expository prose) influenced recall of the information presented. 8 The authors found that information presented in the context of a narrative improves memory, as stories were remembered better than expository passages. A study by Wolfe and Mienko examined the effect of prior knowledge as a function of memory and learning in a narrative or expository text genre. 9 They found that prior knowledge related to greater recall of expository texts but not for narrative genre. Subjects with more prior knowledge had better recall of the expository text information and vice versa. 9 In other words, people with a preexisting level of understanding of a topic will remember a presentation better than someone without. Creating associations between a familiar narrative and a complex concept helps the audience learn, independent of their prior level of knowledge.

Identify the “So, What?”

It is necessary for presenters to build on a persuasive argument. The presenter has a duty to explain why the topic matters and why the learner should care. Adult audiences are more stimulated when the “why” is explicit and pertinent to them. An effective means of accomplishing this is to share a “passion statement.” A moment of being vulnerable and sharing the origin of your passion for a topic builds rapport with the audience while striving to inspire them to care about the topic as well. For example, in a presentation focused on global surgical efforts, the presenter may share some of his or her most rewarding and challenging experiences as well as the impact the operations have had on the children treated. Another way to build a persuasive argument is to frame it in a problem-solution model, in which the problem should relate to the audience for the information to be relevant and the presentation should offer a solution. For example, a medical school presentation on carpal tunnel syndrome may focus on teaching students about the pathophysiology and treatment that their parents or grandparents may experience. On the other hand, a presentation at a medical conference may focus on innovative surgical techniques and strategies to improve postoperative outcomes and averting complications. Identifying why the topic is pertinent to the audience early in the talk is one of the first steps in preparing an effective presentation.

CHARACTERISTICS OF AN EFFECTIVE PRESENTATION

Once preparation for a presentation is complete, the next step is to create it. We will focus on identifying strategies for an effective presentation for an audience; however, the skills mentioned can be translated to many other models of information sharing. Table 1 summarizes the various strategies that can be used to create an effective presentation. Microsoft PowerPoint (Microsoft Corp., Redmond, Wash.) is the most commonly used software to create presentations.

The presentation should include an outline at the introduction of the presentation. Throughout the presentation, the speaker should reference the outline to remind the audience where they are in the presentation narrative. For example, when presenting on a clinical research study, provide a recurrent slide that presents whether you are discussing the background of the project, methods, results, or conclusions. An outline of the presentation describes the general objectives of the talk while serving as a structure on which to build throughout the presentation.

Each presentation slide should have a headline that describes the topic discussed. A headline decreases the cognitive load placed on the audience by identifying the main point. Alley et al. compared the effects of a short phrase headline to a succinct sentence-structured headline on audience retention of a presentation. 10 The authors found that the average score for students viewing the succinct sentence-structured headline was significantly higher. 10 Specifically, a headline should be in a “subject-verb-object” structure using fewer than 140 characters. When presenting a graph or a table that contains a complex topic, the slide’s headline should summarize the take-home point. For example, when presenting a graph on the economic benefit of plastic and reconstructive global surgical trips, the headline could read “Substantial Economic Benefit for Global Surgery Interventions.” The actual economics may be a complex topic for the average audience if they are not economists themselves, but the main point resides in the simple headline.

Consistency

There should be consistency of formatting throughout the presentation and among the different mediums used to present the same information (e.g., slideshow, poster, oral presentation). One simple font should be used throughout the presentation. In addition, the presenter should keep the font size consistent across all headlines, bullet points, diagrams, and tables. Furthermore, background color and design elements, such as the color of the diagrams, should be the same throughout. 11 Color palettes found online can be used to create a theme in the design of the presentation. Margins to the slides should also be aesthetically consistent, as demonstrated in Figure 1 . If the titles or headlines are of varying sizes, an example of inconsistency, the reader may not recognize that sections are related or exhaust time connecting the key points. Consistency decreases distraction and polishes the delivery of the information.

Visual Appeal

Aspects that influence a presentation’s appeal include font, background color, contrast between color of content and background, symmetry, consistency, and more. Goodhand et al. studied the value of posters at medical meetings and found that audience perception of scientific merit correlates with visual appeal. 12 They found that factors increasing visual appeal included their scientific content, pictures/graphs, and limited use of words. 12 Visual appeal consists of many different aspects, which makes it difficult to discuss specifically each detail. Complex concepts can be simplified by creating visual representations, flow charts, and vector diagrams. Resources to consider may be graphics available in Microsoft Word (Microsoft Corp.), The Noun Project (The Noun Project, Inc., Los Angeles, Calif.), Lucidchart (Lucid Software, Inc., South Jordan, Utah), or FlatIcon (Freepik Company, Malaga, Spain). Figure 2 demonstrates the use of a SmartArt graphic in Microsoft Word to organize information. However, cartoons or videos could distract the audience from the main purpose of the slide and should be weighed carefully. Spending extra time on aesthetic details such as font, background, symmetry, and consistency will improve the slideshow’s visual appeal and professional tone.

Four Main Points

A presenter should limit each major concept to no more than four main ideas. In 2001, Cowan studied the mental storage capacity for short-term memory and found that humans are able to remember approximately four main points. 13 If there are more than four key ideas, the presenter should separate the information, so it is not all included on the same slides. For example, when introducing a research study, the four main points may consist of briefly naming the author(s), methods, findings, and the study’s impact on the current topic. Other noteworthy aspects of the study could be expanded upon in the next slide(s). Keeping within four main points aims to maximize the efficiency and overall effectiveness of each slide for the presenter and audience.

CONSTRUCTION AND DELIVERY

Word choice.

Word choice is the specific vocabulary used by the speaker to convey a message. Text in the presentation should be kept simple, using as few words as possible. Using complicated, lofty words increases lexical density and inflicts a strain on the audience to decipher the meaning of the message while requiring additional work to follow along. Sainsbury examined the effect of lexical density and visual clarity of slides on presentation interpretations. 14 The study found that the presentations with less lexical density, despite worse visual clarity, led to greater audience fluency. 14 Considering word choice and using less dense language is a strategy to improve audience comprehension.

In 2007, Todd Bishop, a reporter for the Seattle Post Intelligencer , compared word choice between Apple’s Steve Jobs and Microsoft’s Bill Gates by running their presentation transcripts through UsingEnglish.com, a language analyzer. 15 The tool examines the average number of words per sentence, lexical density, average number of words with more than three syllables, and the level of education theoretically needed to understand the text. It was found that across all four categories, Jobs scored better than Gates. 15 He spoke more simply, was less abstract, and used fewer words per sentence. For example, where Jobs would say “improved quality,” Gates would say “discoverability of the richness.” If a message is confusing, abstract, or convoluted, the presenter will lose an opportunity to share his or her knowledge. Similar language analyzers are offered online and through Microsoft Word. Specifically, Microsoft Word will provide readability statistics, a feature found within its Spelling and Grammar tool. Based on readability statistics, a presenter can adjust his or her language to ensure it resonates better with the audience.

Relevancy in Numbers

Effective scientific presentations show the topic’s relevance to the audience. In surgical and medical education, numbers are often used to describe the efficacy of a treatment or epidemiology of a condition. In breaking down the meaning of data and placing it into a familiar context, greater meaning is provided to the audience. For example, when conducting an economic analysis of plastic and reconstructive surgical efforts in the developing world, Nasser et al. found that the lose of approximately 1720 disability-adjusted life years was averted. 16 However, they went further to explain that 1720 disability-adjusted life years were equal to a total economic benefit of $9,795,384, the same as $12,957 per patient. 16 As a listener, it may be difficult to comprehend the impact of 1720 disability-adjusted life years without further context, but each audience member can visualize what an extra $13,000 could amount to in their own lives. People are more familiar with the concept of currency than disability-adjusted life years; therefore, placing the numbers in a tangible context enhances understanding and creates a greater impact on the audience.

10-Minute Rule

The 10-Minute Rule states that after 10 minutes, the audience will begin to mentally “check out” or naturally lose focus and interest. Thus, every 10 minutes the presenter should change the pace, welcome questions, or add an energizing moment. This can be in the form of sharing a joke or anecdote (these should be relevant, brief, and appropriate), posing a question to the audience, playing a video (which should always be embedded within the presentation to avoid wasting time and creating distractions), or introducing a demonstration. Tanveer et al. studied how narrative trajectories influence audience perception by analyzing the transcripts of more than 2000 TED talks. 17 They found that variations in the narratives were important to hold the motivation and attention of the audience, and presentations without variations were more likely to receive lower ratings. 17 It is common for a presenter to begin and end a presentation without a break or change in pace, but the 10-minute rule is an objective marker presenters can use to avoid delivering a monologue presentation.

Demonstrations/Props

Using demonstrations and props, such as sharing a video of an operative technique, using an anatomical model to discuss specific physiology, or bringing a tool or technology relevant to the topic, is a way to increase engagement in a presentation. For example, Atherton et al. described the use of the Aurasma application, formerly available in the iTunes App Store and Google Play Store, which connected anyone with the app to three-dimensional medical models via QR code. 18 The presenter could create a demonstration of a surgical technique via Aurasma, and the audience was able to view the demonstration from a presentation on their personal smart devices. 18 Demonstrations and props are strategies to keep in mind for the 10-minute rule. Scientific presentations rely heavily on auditory and visual learning, so props offer an alternative way of learning, kinesthetic learning. Although it may be difficult to incorporate props into every presentation, especially as online-based presentations become more popular, apps such as Aurasma may be a useful tool.

Video Clips

Procedures in surgical education can be described through text and pictures, but utilizing a short video clip to demonstrate a procedure enhances the presentation and further reinforces the prior information. Vara et al. described their experiences using the GoPro HERO systems (GoPro, Inc., San Mateo, Calif.) to record video of hand and upper extremity procedures as a technique to capture, analyze, and share surgical experiences. 19 Video clips incorporate motion into a presentation and may help convey complex visual-spatial topics while offering the presenter a moment to share the spotlight and an opportunity to take a break. Nonetheless, it is important to ensure that videos are of reasonable length, as this can influence likability of a video or presentation. 20 Embedding the video into your presentation, rather than switching applications, may save time and make the transition more comfortable for the audience.

Sharing the Spotlight

Sharing the spotlight means incorporating others into a presentation rather than a speaker delivering a monologue. Sharing the spotlight can take the form of simply acknowledging and thanking other team members, or presenters may include guest speakers or specialists in a lecture to share their knowledge. Steve Jobs would often share the spotlight by inviting famous people, such as musician John Mayer, or even a doppelgänger to lead a demonstration. 1 A benefit of online meeting platforms, such as Zoom (Zoom Video Communications, San Jose, Calif.) or Webex (Cisco Systems, Inc., Milpitas, Calif.), is that they make it is easier for special guest speakers to join remotely for a portion of the talk. In addition, testimonials from experts or patients are a way of sharing the spotlight in scientific presentations and offer an engaging opportunity to create a memorable moment.

REFINING THE PRESENTATION

After the presentation has been physically created, rehearsal is critical. As in a theatre rehearsal, there should be a script, costume, and many practices. A script should direct the presenter in how to discuss the information on the slide. Ultimately, with practice, the presenter should not rely on the script during the presentation but should keep a copy in a pocket only to use as a last resort. The comfort of having this security blanket invariably puts the speaker at rest. A presenter should not read every single word on the slide verbatim, but rather explain and verbally bring the information to life. It is essential that the presenter practice the entire presentation, preferably recording the rehearsal to assess body language, verbal fillers, and subconscious nervous habits. Feelings of nervousness and anxiety about public speaking are common.

Hansen et al. provide information on techniques for delivering effective lectures to ensure that surgeons speak as well as they operate. 21 The authors describe the importance of understanding and acknowledging that everyone experiences a level of anxiety when presenting. 21 Physicians are taught to anticipate complications related to a procedure or condition, thus an effective presenter will also learn to anticipate certain traits, such as speaking too fast, anxiety, and nervousness. Acknowledging the humanity in those emotions and practicing using the techniques described will decrease nervousness, boost confidence, and enhance the effectiveness of the presentation.

The presenter should dress to match the expected professional role he or she is representing. Some say dress for success, but perhaps a better takeaway is to never be underdressed. This is not to say that every presenter should wear the most formal attire, but rather to consider the conscious and subconscious effect a speaker’s outfit may have on the audience’s perception of the presenter. As in scientific posters, those who look sharp are taken more seriously. Feeling confident in an outfit may also translate to greater self-assuredness on the stage. Ruetzler et al. performed a conjoint analysis of personal presentation attributes and found that grooming and professional attire were most notable in shaping favorable perceptions. 22 Furthermore, Keegan and Bannister studied the effect of color-coordinated attire with poster presentation popularity. 23 They found a significantly higher number of visitors for posters of presenters with coordinated rather than clashing attire. 23 The two studies suggest that there are benefits to dressing professionally, and that attire does affect how the presentation is received.

CONCLUSIONS

After the hard work of preparing, constructing, and refining a presentation, the final ingredient for delivering an effective presentation is personality: sprinkle in jokes and anecdotes while demonstrating both confidence and humility throughout to make the presentation representative of the presenter. Creating the presentation should be fun; if the presenter does not enjoy the presentation, there is no way the audience will either. Humor and stories should be kept professional relative to the level of the presentation but should still aim to keep the audience engaged with light and relatable moments. The skills highlighted in this article will help presenters create effective scientific presentations. Furthermore, future research identifying the strengths and weaknesses in plastic surgery presentations can help improve the quality of the presentations in the field.

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Scientific Presentation Guide: How to Create an Engaging Research Talk

Creating an effective scientific presentation requires developing clear talking points and slide designs that highlight your most important research results..

Scientific presentations are detailed talks that showcase a research project or analysis results. This comprehensive guide reviews everything you need to know to give an engaging presentation for scientific conferences, lab meetings, and PhD thesis talks. From creating your presentation outline to designing effective slides, the tips in this article will give you the tools you need to impress your scientific peers and superiors.

Step 1. Create a Presentation Outline

The first step to giving a good scientific talk is to create a presentation outline that engages the audience at the start of the talk, highlights only 3-5 main points of your research, and then ends with a clear take-home message. Creating an outline ensures that the overall talk storyline is clear and will save you time when you start to design your slides.

Engage Your Audience

The first part of your presentation outline should contain slide ideas that will gain your audience's attention. Below are a few recommendations for slides that engage your audience at the start of the talk:

• Create a slide that makes connects your data or presentation information to a shared purpose, such as relevance to solving a medical problem or fundamental question in your field of research
• Create slides that ask and invite questions
• Use humor or entertainment

Identify Clear Main Points

After writing down your engagement ideas, the next step is to list the main points that will become the outline slide for your presentation. A great way to accomplish this is to set a timer for five minutes and write down all of the main points and results or your research that you want to discuss in the talk. When the time is up, review the points and select no more than three to five main points that create your talk outline. Limiting the amount of information you share goes a long way in maintaining audience engagement and understanding. 

Create a Take-Home Message

And finally, you should brainstorm a single take-home message that makes the most important main point stand out. This is the one idea that you want people to remember or to take action on after your talk. This can be your core research discovery or the next steps that will move the project forward.

Step 2. Choose a Professional Slide Theme

After you have a good presentation outline, the next step is to choose your slide colors and create a theme. Good slide themes use between two to four main colors that are accessible to people with color vision deficiencies. Read this article to learn more about choosing the best scientific color palettes .

You can also choose templates that already have an accessible color scheme. However, be aware that many PowerPoint templates that are available online are too cheesy for a scientific audience. Below options to download professional scientific slide templates that are designed specifically for academic conferences, research talks, and graduate thesis defenses.

Step 3. Design Your Slides

Designing good slides is essential to maintaining audience interest during your scientific talk. Follow these four best practices for designing your slides:

• Keep it simple: limit the amount of information you show on each slide
• Use images and illustrations that clearly show the main points with very little text. 
• Read this article to see research slide example designs for inspiration
• When you are using text, try to reduce the scientific jargon that is unnecessary. Text on research talk slides needs to be much more simple than the text used in scientific publications (see example below).
• Use appear/disappear animations to break up the details into smaller digestible bites
• Sign up for the free presentation design course to learn PowerPoint animation tricks

Scientific Presentation Design Summary

All of the examples and tips described in this article will help you create impressive scientific presentations. Below is the summary of how to give an engaging talk that will earn respect from your scientific community. 

Step 1. Draft Presentation Outline. Create a presentation outline that clearly highlights the main point of your research. Make sure to start your talk outline with ideas to engage your audience and end your talk with a clear take-home message.

Step 2. Choose Slide Theme. Use a slide template or theme that looks professional, best represents your data, and matches your audience's expectations. Do not use slides that are too plain or too cheesy.

Step 3. Design Engaging Slides. Effective presentation slide designs use clear data visualizations and limits the amount of information that is added to each slide. 

And a final tip is to practice your presentation so that you can refine your talking points. This way you will also know how long it will take you to cover the most essential information on your slides. Thank you for choosing Simplified Science Publishing as your science communication resource and good luck with your presentations!

Interested in free design templates and training?

Explore scientific illustration templates and courses by creating a Simplified Science Publishing Log In. Whether you are new to data visualization design or have some experience, these resources will improve your ability to use both basic and advanced design tools.

Interested in reading more articles on scientific design? Learn more below:

Data Storytelling Techniques: How to Tell a Great Data Story in 4 Steps

Best Science PowerPoint Templates and Slide Design Examples

Free Research Poster Templates and Tutorials

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How to prepare a scientific presentation

Putting together a scientific presentation might be a pretty challenging undertaking. However, with careful preparation and planning, it can turn into a rewarding experience.

In this article, we’ll discuss the purpose, presentation methods, and structure of an excellent scientific ppt, as well as share essential tips on how to introduce a scientific presentation, so dive in!

What’s a scientific presentation

A scientific presentation is a formal way to share an observation, propose a hypothesis, show and explain the findings of a study, or summarize what has been discovered or is still to be studied on the subject.

Professional scientific presentations aid in disseminating research and raise peers’ awareness of novel approaches, findings, or issues. They make conferences memorable for both the audience and the presenter.

Presentation methods

The three major presentation methods that are frequently used at large conferences include platform (oral), poster, and lecture presentations. Although appearing seemingly different at times, they all have the same requirements and difficulties for successful execution, and their main prerequisite is you, the presenter.

An effective presenter should have led the research, taken part in the analysis, and written the abstract and manuscript, which means the presenter should be fully knowledgeable about the topic at hand.

Scientific presentation structure

For the majority of scientific presentations, it is advisable to follow the traditional structure:

Title → Introduction/Background → Methods → Results → Discussion → Conclusion → Acknowledgements.

1. Introduction

The main elements that make up the introduction include the background of the study, the research problem, the significance of the research, the research objectives, research questions, and/or hypotheses.

The background is the premise upon which the study’s problem is built. It usually consists of one or two sentences.

After the background usually comes the research problem, which is made up of one or two sentences with clear statements. These can be anything from conflicting findings to a knowledge gap your scientific presentation PowerPoint addresses.

The justification part should briefly outline how the findings will contribute to the problem’s solution. It can also discuss the possible implications of the study in not more than two sentences.

Next comes the purpose of the study, which has to outline your goals and relate to the study’s title.

You may wrap up the introduction by listing the objectives of your study, research questions, or hypotheses. The study’s objectives describe the specific steps that must be taken to accomplish the goal. Please note that the objective can be turned into a research question and a research question, in turn, into a hypothesis.

2. Methodology

This section of your presentation should include a relevant study area map. It is recommended that you adequately describe the research design and use diagrams like flowcharts whenever possible.

Additionally, explain the procedures for obtaining the data for each objective, research question, and hypothesis. Finally, state the statistical analysis procedures used.

3. Results and discussion

An oral presentation will always include both the results and the discussion. However, the slides will only contain the results.

You can use tables and figures together, but they shouldn’t be applied to the same data set.

The results of your scientific PowerPoint presentation have to be organized in the same order as the objectives, research questions, and hypotheses. Still, describing and discussing the obtained results should be done off-head.

During your presentation, explain the findings in the tables and figures, pointing out any patterns. Also, discuss the results by assigning reasons to patterns, comparing the results with earlier research, and offering interpretations and implications for your findings.

4. Conclusion

Your presentation’s final section should offer closing remarks on the study’s key findings, not restate the results. Discuss the findings and their implications and make recommendations for additional research briefly and concisely.

If you include in-text references in your slides, always provide external references on a separate slide.

Prepare your title slide before beginning the research’s introduction section. Your name, your institution or department, the title of the presentation, and its date should all be included on the title slide.

Last but not least, your second slide should include the scientific presentation outline.

3 things to pay attention to when creating a scientific presentation

Color is a powerful tool for setting a pattern. It can make it easier for the reader or the audience to follow you and comprehend the connection between the subjects you are presenting.

According to our design experts, you have to create a natural flow of information and emphasize information that the reader has to see first (e.g., title or main image). Secondary data has to be less prominent, not to take priority. This all can be achieved through colors. Striking colors will quickly grab the audience’s attention. Meanwhile, a grayscale will be more discreet, making it ideal for secondary information.

Pro tip: Select one or two primary colors for your presentation, then use them repeatedly on the slides.

2. Typography

Font selection is crucial for the overall success of your presentation. Therefore, make sure your text is simple to see and read even if the person is sitting a considerable distance from the screen. Separate paragraphs and headings and stick with three different fonts at most (e.g., Helvetica, Gotham).

Remember that your audience will be looking at the slides while you are speaking, so avoid putting too much text on them.

Pro tip: Use a different font for your headline but ensure it doesn’t create the “comic sans” effect.

Visual aids such as charts, graphs, and images are indispensable for effectively conveying information and grabbing the audience’s attention, but you must choose them carefully.

Make sure to move from this to this:

Pro tip: If there’s a diagram, chart, or other visual that you don’t plan to walk your audience through, cut it.

Here’s a good scientific presentation example to follow:

Now that you know how to make a scientific presentation and what to pay attention to when creating one, let’s move on to the scientific presentation tips from the best designers of our professional presentation services .

Top 10 tips on how to present a scientific paper

Tip #1: Know your audience

View the presentation as a dialogue with the audience rather than a monologue, and always consider the interests and expertise of your audience. This will help you tailor your scientific presentation to their level of knowledge and interests.

Tip #2: Make use of PowerPoint

PowerPoint is an excellent tool for presenting scientific research if appropriately used. Generally, this involves inserting a lot of relevant visuals and minimum words with a font size of 24 points and above.

Tip #3: Tell your audience about your research rather than its background

Focus on discussing the research that you are directly contributing to. The background information should only include the bare minimum. People don’t attend conferences to hear a review of previous work. They do so to learn about new and intriguing research, so use the allotted time to your advantage.

Tip #4: Practice and rehearse

Always practice your presentation of science thoroughly before giving it to anyone. By doing so, you’ll gain a better understanding of the material and make sure your presentation flows smoothly.

Tip #5: Keep to the time limit

A basic rule of thumb is to keep your presentation to 80% of the allotted time. If you are given 55 minutes to deliver your presentation, prepare 45 minutes worth of information: 15 minutes for introduction, 25 for the main aspects of your presentation, 5 to summarize and conclude, and leave the last ten for a Q&A session.

A well-done abstract, a set of carefully chosen viewgraphs, a brief “cheat sheet,” and an outline (perhaps placed in the corner of each viewgraph) should all help you stay on track throughout your presentation.

Tip #6: Don’t read from the slides

Reading from slides is commonplace in various fields, but do you really find it interesting to hear someone read their conference presentation? If reading is an absolute must, then our experts advise you to do it in such a way that no one in the audience notices it. Writing your text in a conversational tone and reading with emotion, conviction, and variations in tone is a great trick to achieve that.

Tip #7: Summarize the key points

Reiterate your main message and briefly touch on your main points in your conclusion. By doing so, you can ensure that your audience will remember the most crucial details of your presentation.

Tip #8: Use effective communication techniques

When delivering your presentation, use appropriate body language and effective communication techniques. These include maintaining eye contact with the audience, speaking clearly and at a reasonable volume, and conveying enthusiasm about your work. Remember, genuine enthusiasm accounts for 90% of a speaker’s success.

Tip #9: Engage the audience

Always ask questions and use polls or other interactive tools to interact with your audience and encourage discussion.

Tip #10: Dress for success

When preparing to give a scientific presentation, dress up professionally. This will help convey two crucial messages: you respect your audience and are willing to conform.

Wrapping up

Following the above science presentation structure and tips, you can create clear, informative, and engaging slides that effectively communicate your message to the audience. However, if you’re still wondering how to start a scientific presentation or need a PowerPoint makeover , don’t hesitate to contact our dedicated design experts!

At SlidePeak, we know that building a visually captivating presentation may be a real challenge for researchers and scientists. That’s why we’ve developed several services, including presentation redesign and creation from scratch by qualified scientific, technical, and medical designers who can make your work stand out both in science and creativity.

With over a decade of experience in presentation design, SlidePeak is trusted by thousands of researchers and scientists worldwide. So, submit your scientific presentation order today, and let dedicated experts turn your ideas into professional slides that will help you make an impact!

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• Presenting techniques
• 50 tips on how to improve PowerPoint presentations in 2022-2023 [Updated]
• Present financial information visually in PowerPoint to drive results
• How to present a research paper in PPT: best practices
• Keynote VS PowerPoint

Crafting an engaging presentation script

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Annual report design templates and tips: how to tell a great story with financial data in 2023

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• 01 December 2021

How to tell a compelling story in scientific presentations

• Bruce Kirchoff 0

Bruce Kirchoff is a botanist and storyteller at the University of North Carolina at Greensboro in North Carolina, USA. His new book is Presenting Science Concisely .

You can also search for this author in PubMed   Google Scholar

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Structuring your presentations with care can help you to clearly communicate to your audience. Credit: Getty

Scientific presentations are too often boring and ineffective. Their focus on techniques and data do not make it easy for the audience to understand the main point of the research.

If you want to reach beyond the narrow group of scientists who work in your specific area, you need to tell your audience members why they should be interested. Three things can help you to be engaging and convey the importance of your research to a wide audience. I had been teaching scientific communication for several years when I was approached to write a book about improving scientific presentations 1 . These are my three most important tips.

State your main finding in your title

The best titles get straight to the point. They tell the audience what you found, and they let them know what your talk will be about. Throughout this article, I will use titles from Nature papers published in the past two years as examples that will stand in for presentation titles. This is because Nature articles have a similar goal of attempting to make discipline-specific research available to a broader audience of scientists. Take, for example: ‘Supply chain diversity buffers cities against food shocks’ 2 .

A great title tells the reader exactly what’s new and precisely conveys the main result, as this one demonstrates. A more conventional title would have been ‘Effect of supply chain diversity on food shocks’, which omits the direction of the effect — so mainly scientists who are interested in your research area will be attracted to the talk. Others will wonder whether the talk will be a waste of time: maybe there was no effect at all.

Collection: Careers toolkit

Another example of a good title is: ‘Organic management promotes natural pest control through altered plant resistance to insects’ 3 .

This title ensures that the audience members know that the talk will be about the beneficial effects of organic crop management before they hear it. They also know that organic management increases plant resistance to insects. This title is much better than one such as: ‘Effects of organic pest management on plant insect resistance’. This title tells the audience the general area of the talk but does not give them the main result.

Finally, look at: ‘A highly magnetized and rapidly rotating white dwarf as small as the Moon’ 4 .

Good titles can just as easily be written for descriptive work as for experimental results. All you need to do is tell your audience what you found. Be as specific as possible. Compare this title with a more conventional one for the same work: ‘Use of the Zwicky Transient Facility to search for short period objects below the main white dwarf cooling sequence’. This title might be of interest to astronomers interested in using this facility, but is unlikely to attract anyone beyond them.

‘But’ is good — use it for dramatic effect

The contradiction implied by the word ‘but’ is one of the most powerful tools a scientist can use 5 . Contradictions introduce problems and provide dramatic effect, tension and a reason to keep listening.

Without such contradictions, the talk will consist of a bunch of results strung together in a seemingly endless and mind-numbing list. We can think of this list as a series of ‘and’ statements: “We did this and this and ran this experiment and found this result and . . . and . . . and.”

Contrast this with a structure that begins with a few important facts, tethered by ands, and then introduces the problem to be solved. Finally, ‘therefore’ can introduce results or subsequent actions. That structure would look like this: ‘X is the current state of knowledge, and we know Y. But Z problem remains. Therefore, we carried out ABC research.’ The introduction of even one contradiction wakes up people in the audience and helps them to focus on the results.

Collection: Conferences

A paper published earlier this year on SARS-CoV-2 and host protein synthesis provides an excellent example of the narrative form using ‘and’, ‘but’ and ‘therefore’ 6 . In the example below, I have shortened the abstract and simplified the transitions, but maintained the authors’ original structure 6 . Although they did not use ‘but’ or ‘therefore’ in their abstract, the existence of these terms is clearly implied. I have made them explicit in the following rendition.

“Coronaviruses have developed a variety of mechanisms to repress host messenger RNA translation and to allow the translation of viral mRNA and block the cellular immune response. But a comprehensive picture of the effects of SARS-CoV-2 infection on cellular gene expression is lacking. Therefore, we combine RNA sequencing, ribosome profiling and metabolic labelling of newly synthesized RNA to comprehensively define the mechanisms that are used by SARS-CoV-2 to shut off cellular protein synthesis.”

In this example, background information is given in the first sentence, linked by a series of conjunctions. Then the problem is introduced — this is the contradiction that comes with ‘but’. The solution to this problem is given in the next sentence (and introduced by using ‘therefore’). This structure makes the text interesting. It will do the same for your presentations.

Use repeated problems and solutions to create a story

Use the power of contradiction to maintain audience engagement throughout your talk. You can string together a series of problems and solutions (buts and therefores) to create a story that leads to your main result. The result highlighted in your title will help you to focus your talk so that the solutions you present lead to this overarching result.

Here is the general pattern:

1. Present the first part of your results.

2. Introduce a problem that remains.

3. Provide a solution to this problem by presenting more results.

4. Introduce the next problem.

5. Present the results that address this problem.

6. Continue this ‘problem and solution’ process through your presentation.

7. End by restating your main finding and summarize how it arises from your intermediate results.

The SARS-CoV-2 abstract 6 uses this pattern of repeated problems (buts) and solutions (therefores). I have modified the wording to clarify these sections.

1. Result 1: SARS-CoV-2 infection leads to a global reduction in translation, but we found that viral transcripts are not preferentially translated.

2. Problem 1: How then does viral mRNA comes to dominate the mRNA pool?

3. Solution 1: Accelerated degradation of cytosolic cellular mRNAs facilitates viral takeover of the mRNA pool in infected cells.

4. Problem 2: How is the translation of induced transcripts affected by SARS-CoV-2 infection?

5. Solution 2: The translation of induced transcripts (including innate immune genes) is impaired.

6. Problem 3: How is translation impaired? What is the mechanism?

7. Solution 3: Impairment is probably mediated by inhibiting the export of nuclear mRNA from the nucleus, which prevents newly transcribed cellular mRNA from accessing ribosomes.

8. Final summary: Our results demonstrate a multipronged strategy used by SARS-CoV-2 to take over the translation machinery and suppress host defences.

Using these three basic tips, you can create engaging presentations that will hold the attention of your audience and help them to remember you. For young scientists, especially, that is the most important thing the audience can take away from your talk.

Nature 600 , S88-S89 (2021)

doi: https://doi.org/10.1038/d41586-021-03603-2

This article is part of Nature Events Guide , an editorially independent supplement. Advertisers have no influence over the content.

This is an article from the Nature Careers Community, a place for Nature readers to share their professional experiences and advice. Guest posts are encouraged .

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B.K. receives royalties for his book, which this article is based on.

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How to give a dynamic scientific presentation

August 4, 2015 | 12 min read

By Marilynn Larkin

Convey your ideas and enthusiasm – and avoid the pitfalls that put audiences to sleep

Joann Halpern, PhD, moderates a panel at the German Center for Research and Innovation in New York. (Photo by Nathalie Schueller)

Giving presentations is an important part of sharing your work and achieving recognition in the larger medical and scientific communities. The ability to do so effectively can contribute to career success.

However, instead of engaging audiences and conveying enthusiasm, many presentations fall flat. Pitfalls include overly complicated content, monotone delivery and focusing on what  you  want to say rather than what the audience is interested in hearing.

Effective presentations appeal to a wide range of audiences — those who work in your area of interest or in related fields, as well as potential funders, the media and others who may find your work interesting or useful.

There are two major facets to a presentation: the content and how you present it. Let’s face it, no matter how great the content, no one will get it if they stop paying attention. Here are some pointers on how to create clear, concise content for scientific presentations – and how to deliver your message in a dynamic way.

Presentation pointers: content

Here are five tips for developing effective content for your presentation:

1. Know your audience. 

Gear your presentation to the knowledge level and needs of the audience members. Are they colleagues? Researchers in a related field? Consumers who want to understand the value of your work for the clinic (for example, stem cell research that could open up a new avenue to treat a neurological disease)?

2. Tell audience members up front why they should care and what’s in it for them. 

What problem will your work help solve? Is it a diagnostic test strategy that reduces false positives? A new technology that will help them to do their own work faster, better and less expensively? Will it help them get a new job or bring new skills to their present job?

Dr. Marius Stan with Vince Gilligan, creator, producer and head writer for  Breaking Bad.

3. Convey your excitement. 

Tell a brief anecdote or describe the “aha” moment that convinced you to get involved in your field of expertise. For example,  Dr. Marius Stan   opens in new tab/window , a physicist and chemist known to the wider world as the carwash owner on  Breaking Bad   opens in new tab/window ,  explained that mathematics has always been his passion, and the “explosion” of computer hardware and software early in his career drove his interest to computational science, which involves the use of mathematical models to solve scientific problems. Personalizing makes your work come alive and helps audience members relate to it on an emotional level.

4. Tell your story. 

A presentation is  your  story. It needs a beginning, a middle and an end. For example, you could begin with the problem you set out to solve. What did you discover by serendipity? What gap did you think your work could fill? For the middle, you could describe what you did, succinctly and logically, and ideally building to your most recent results. And the end could focus on where you are today and where you hope to go.

Donald Ingber, MD, PhD, Director of the Wyss Institute for Biologically Inspired Engineering at Harvard University, gives a keynote address at the Society for Laboratory Automation and Screening’s 2015 conference and exhibition in Washington, DC.

Start with context . Cite research — by you and others — that brought you to this point. Where does your work fit within this context? What is unique about it? While presenting on organs-on-chips technology at a recent conference, Dr. Donald Ingber, Director of the Wyss Institute for Biologically Inspired Engineering at Harvard, described the pioneering work of others in the field, touched on its impact, then went on to show his unique contributions to the field. He did not

present his work out of context, as though his group were the only one achieving results.

Frame the problem : “We couldn’t understand why our experiment wasn’t working so we investigated further”; “We saw an opportunity to cut costs and speed things up.”

Prof. Doris Rusch, PhD, talks about creating games to mimic the struggles of anorexia and the anxiety of OCD, at the 12th Annual Games for Change Festival in New York City. (Photo by Gabi Porter)

Provide highlights of what you did, tied to the audience’s expertise and/or reasons for attending your presentation. Present the highlights in a logical order. Avoid going into excruciating detail. If people are interested in steps you don’t cover, they’ll ask and you can expand during the Q&A period. A meeting I covered on educational gaming  

gave presenters just 10 minutes each to talk about their work. Most used three to five slides, making sure to include a website address for more information on each slide. Because these speakers were well prepared, they were able to identify and communicate their key points in the short timeframe. They also made sure attendees who wanted more information would be able to find it easily on their websites. So don’t get bogged down in details — the what  is often more important than the how .

Conclude by summing up key points and acknowledging collaborators and mentors. Give a peek into your next steps, especially if you’re interested in recruiting partners. Include your contact details and Twitter handle.

5. Keep it simple. 

Every field has its jargon and acronyms, and science and medicine are no exceptions. However, you don’t want audience members to get stuck on a particular term and lose the thread of your talk. Even your fellow scientists will appreciate brief definitions and explanations of terminology and processes, especially if you’re working in a field like microfluidics, which includes collaborators in diverse disciplines, such as engineering, biomedical research and computational biology.

I’ve interviewed Nobel laureates who know how to have a conversation about their work that most anyone can understand – even if it involves complex areas such as brain chemistry or genomics. That’s because they’ve distilled their work to its essence, and can then talk about it at the most basic level as well as the most complicated. Regardless of the level of your talk, the goal should be to communicate, not obfuscate.

Presentation pointers: you

Here are 10 tips to help you present your scientific work and leave the audience wanting more.

1. Set the stage. 

Get your equipment ready and run through your slides if possible (use the “speaker ready” room if one is available). If you’ve never been in the venue, try getting there early and walk the room. Make sure you have water available.

2. Get ready to perform. 

Every presentation is a performance. The most important part is to know your lines and subject. Some people advocate memorizing your presentation, but if you do so, you can end up sounding stilted or getting derailed by an interruption. When you practice, focus on the key points you want to make (note them down if it helps) and improvise different ways of communicating them.

It’s well known that a majority of people fear public speaking — and even those who enjoy it may get stage fright. Fear of public speaking will diminish with experience. I’ve been presenting and performing for many years but still get stage fright. Try these strategies to manage the fear:

Breathe slowly and deeply for a few minutes before your talk.

Visualize yourself giving a relaxed talk to a receptive audience. This works best if you can close your eyes for a few minutes. If you’re sitting in the audience waiting to be introduced and can’t close your eyes, look up at the ceiling and try visualizing that way.

Do affirmations. Tell yourself you are relaxed, confident — whatever works for you. Whether affirmations are effective is a matter of debate, but you won’t know unless you try.

Assume one or more “power poses,” developed by social psychologist and dancer Dr. Amy Cuddy   opens in new tab/window of the Harvard Business School, before giving your presentation. She demonstrates them in this TED talk   opens in new tab/window . Power poses are part of the emerging field of embodiment research (see a comprehensive collection of articles   opens in new tab/window related to this research in the journal Frontiers in Psychology ). Research on power poses has yielded mixed results to date, but they’re worth a try.

3. Stride up to the podium. 

Seeing you walk energetically energizes the audience. They expect you to engage them and you have their attention.

4. Stand tall and keep your chest lifted. 

It’s more difficult to breathe and speak when your shoulders are rolled forward and your chest caves in. Standing tall is also a way of conveying authority. If you’re presenting from a sitting position, sit up in your seat, keep your arms relaxed and away from your sides (i.e., don’t box yourself in by clasping your arms or clasping your hands in your lap).

Not only will you appear more relaxed if you smile, but research has shown that smiling — even when forced — reduces stress. Plus the audience enjoys watching and listening to someone who’s smiling rather than being stern or overly serious, especially if your topic is complicated.

One of the most enjoyable presentations I’ve covered was on animal versus human cognition. It dealt with the evolution and activation of different parts of the brain. By inserting anecdotes in with complex didactic information, presenter Dr. Onur Güntürkün, Professor of Biological Psychology at the Ruhr-Universität Bochum in Germany, made the topic accessible and compelling.

6. Speak up. 

The audience came to your talk so they really do want to hear what you have to say. If a microphone is available, use it. I’ve seen countless presenters stand in front of a microphone yet somehow manage not to talk into it. Talk from your diaphragm, not your throat, to give your voice authority and resonance.

7. Take your time. 

A moment or two of silence as you gather your thoughts or move to a new topic can actually make the audience pay attention. Don’t feel you have to talk continuously, and avoid filler phrases, such as “you know.”

8. Talk to the audience, not the screen. 

Making eye contact with one or more friendly faces can relax you and help you connect to the audience. It will also prevent you from reading your slides, which you don’t want to do unless absolutely necessary (for example, if you forget the statistics supporting a particular point).

9. Stick to your time frame. 

We’ve all done it, but it’s not fun to have to cycle rapidly through your last 10 slides because the moderator has given you a two-minute warning and you’re nowhere near the end. Try to pace yourself. When preparing your slides and practicing (i.e., rehearsing for your performance), make a note on the slide you think you should be discussing when you’re about midway through your talk. This gives you a benchmark and lets you know if you need to speed up or slow down the rest of the presentation.

Related resource

The  Elsevier Publishing Campus   opens in new tab/window  is a free online platform that provides lectures, interactive training and professional advice on a wide range of topics, from the fundamentals of publishing to broader issues like gender in research and open science. Researchers can register for training courses, learn from leaders in research and publishing, and take part in topical debates. For every module or seminar completed, researchers are recognized for their efforts with an awarded  certificate   opens in new tab/window  from Elsevier.

Six dos and don’ts of PowerPoint slides

1. Less is more.  Although there are no “rules,” I’ve found that 20-25 slides work well for a one hour presentation. You’ll have a better idea what works for you if you time yourself during a practice session.

2. Create sections.  Use a title slide to start a new section or change the subject. This will also help you organize your presentation and make sure it flows logically.

3. Avoid clutter.  Stick to three to five bullet points per slide  at most . Bullet points should contain key words — not complete sentences. For examples of what  not  to do, see this recent editorial in the  Washington Post , which  urges a ban on PowerPoint presentations   opens in new tab/window .

4. Make it readable.  Rule of thumb for fonts: 28-40 point for headlines; 18-28 for text; 12-14 for references. Use  sans serif  fonts, and make sure you have a strong contrast between the background and text (e.g., black or dark blue text on a white background; white text on a blue background). Don’t use ALL CAPS; underscore a point by putting it in italics or bold (underlining can make the text more difficult to read).

5. Use visuals.  In a recent talk, presenters explained why biological image processing and analysis is a hot field in laboratory R&D. The reason is simple: you can tell a lot more about cells with an image versus a cell count. The same is true of your presentation: a single image of something particularly relevant to your work is more engaging and has the potential to convey more information than words.

That said, it’s important to keep the visual simple — an image of a single cell or pathway, for example. If you use graphs to show comparisons or results, indicate what the axes represent and which variables (ideally, not more than two or three) you’re displaying.

Generally, steer clear of videos. One of the few effective videos I’ve seen was of a Caledonian crow creating a tool to obtain food, which Dr. Güntürkün included in the presentation referred to above. Videos of in vitro experiments and imaging results rarely help support a point because the low resolution makes everything look grainy.

6. Check your spelling.  Nothing takes away from credibility like misspelled words, especially if they’re up on large screen for a minute or more — or worse, repeated throughout your presentation. After you use spell check, proof your presentation yourself. Let a day go by if possible; it’s easier to pick up errors after a break.

Contributor

Marilynn Larkin

Writer and Editor for medical, scientific and consumer audiences

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Open Access

Ten simple rules for effective presentation slides

* E-mail: [email protected]

Affiliation Biomedical Engineering and the Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia, United States of America

• Kristen M. Naegle

Published: December 2, 2021

• https://doi.org/10.1371/journal.pcbi.1009554
• Reader Comments

Citation: Naegle KM (2021) Ten simple rules for effective presentation slides. PLoS Comput Biol 17(12): e1009554. https://doi.org/10.1371/journal.pcbi.1009554

Copyright: © 2021 Kristen M. Naegle. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funding: The author received no specific funding for this work.

Competing interests: The author has declared no competing interests exist.

Introduction

The “presentation slide” is the building block of all academic presentations, whether they are journal clubs, thesis committee meetings, short conference talks, or hour-long seminars. A slide is a single page projected on a screen, usually built on the premise of a title, body, and figures or tables and includes both what is shown and what is spoken about that slide. Multiple slides are strung together to tell the larger story of the presentation. While there have been excellent 10 simple rules on giving entire presentations [ 1 , 2 ], there was an absence in the fine details of how to design a slide for optimal effect—such as the design elements that allow slides to convey meaningful information, to keep the audience engaged and informed, and to deliver the information intended and in the time frame allowed. As all research presentations seek to teach, effective slide design borrows from the same principles as effective teaching, including the consideration of cognitive processing your audience is relying on to organize, process, and retain information. This is written for anyone who needs to prepare slides from any length scale and for most purposes of conveying research to broad audiences. The rules are broken into 3 primary areas. Rules 1 to 5 are about optimizing the scope of each slide. Rules 6 to 8 are about principles around designing elements of the slide. Rules 9 to 10 are about preparing for your presentation, with the slides as the central focus of that preparation.

Rule 1: Include only one idea per slide

Each slide should have one central objective to deliver—the main idea or question [ 3 – 5 ]. Often, this means breaking complex ideas down into manageable pieces (see Fig 1 , where “background” information has been split into 2 key concepts). In another example, if you are presenting a complex computational approach in a large flow diagram, introduce it in smaller units, building it up until you finish with the entire diagram. The progressive buildup of complex information means that audiences are prepared to understand the whole picture, once you have dedicated time to each of the parts. You can accomplish the buildup of components in several ways—for example, using presentation software to cover/uncover information. Personally, I choose to create separate slides for each piece of information content I introduce—where the final slide has the entire diagram, and I use cropping or a cover on duplicated slides that come before to hide what I’m not yet ready to include. I use this method in order to ensure that each slide in my deck truly presents one specific idea (the new content) and the amount of the new information on that slide can be described in 1 minute (Rule 2), but it comes with the trade-off—a change to the format of one of the slides in the series often means changes to all slides.

• PPT PowerPoint slide
• PNG larger image
• TIFF original image

Top left: A background slide that describes the background material on a project from my lab. The slide was created using a PowerPoint Design Template, which had to be modified to increase default text sizes for this figure (i.e., the default text sizes are even worse than shown here). Bottom row: The 2 new slides that break up the content into 2 explicit ideas about the background, using a central graphic. In the first slide, the graphic is an explicit example of the SH2 domain of PI3-kinase interacting with a phosphorylation site (Y754) on the PDGFR to describe the important details of what an SH2 domain and phosphotyrosine ligand are and how they interact. I use that same graphic in the second slide to generalize all binding events and include redundant text to drive home the central message (a lot of possible interactions might occur in the human proteome, more than we can currently measure). Top right highlights which rules were used to move from the original slide to the new slide. Specific changes as highlighted by Rule 7 include increasing contrast by changing the background color, increasing font size, changing to sans serif fonts, and removing all capital text and underlining (using bold to draw attention). PDGFR, platelet-derived growth factor receptor.

https://doi.org/10.1371/journal.pcbi.1009554.g001

Rule 2: Spend only 1 minute per slide

When you present your slide in the talk, it should take 1 minute or less to discuss. This rule is really helpful for planning purposes—a 20-minute presentation should have somewhere around 20 slides. Also, frequently giving your audience new information to feast on helps keep them engaged. During practice, if you find yourself spending more than a minute on a slide, there’s too much for that one slide—it’s time to break up the content into multiple slides or even remove information that is not wholly central to the story you are trying to tell. Reduce, reduce, reduce, until you get to a single message, clearly described, which takes less than 1 minute to present.

Rule 3: Make use of your heading

When each slide conveys only one message, use the heading of that slide to write exactly the message you are trying to deliver. Instead of titling the slide “Results,” try “CTNND1 is central to metastasis” or “False-positive rates are highly sample specific.” Use this landmark signpost to ensure that all the content on that slide is related exactly to the heading and only the heading. Think of the slide heading as the introductory or concluding sentence of a paragraph and the slide content the rest of the paragraph that supports the main point of the paragraph. An audience member should be able to follow along with you in the “paragraph” and come to the same conclusion sentence as your header at the end of the slide.

Rule 4: Include only essential points

While you are speaking, audience members’ eyes and minds will be wandering over your slide. If you have a comment, detail, or figure on a slide, have a plan to explicitly identify and talk about it. If you don’t think it’s important enough to spend time on, then don’t have it on your slide. This is especially important when faculty are present. I often tell students that thesis committee members are like cats: If you put a shiny bauble in front of them, they’ll go after it. Be sure to only put the shiny baubles on slides that you want them to focus on. Putting together a thesis meeting for only faculty is really an exercise in herding cats (if you have cats, you know this is no easy feat). Clear and concise slide design will go a long way in helping you corral those easily distracted faculty members.

Rule 5: Give credit, where credit is due

An exception to Rule 4 is to include proper citations or references to work on your slide. When adding citations, names of other researchers, or other types of credit, use a consistent style and method for adding this information to your slides. Your audience will then be able to easily partition this information from the other content. A common mistake people make is to think “I’ll add that reference later,” but I highly recommend you put the proper reference on the slide at the time you make it, before you forget where it came from. Finally, in certain kinds of presentations, credits can make it clear who did the work. For the faculty members heading labs, it is an effective way to connect your audience with the personnel in the lab who did the work, which is a great career booster for that person. For graduate students, it is an effective way to delineate your contribution to the work, especially in meetings where the goal is to establish your credentials for meeting the rigors of a PhD checkpoint.

Rule 6: Use graphics effectively

As a rule, you should almost never have slides that only contain text. Build your slides around good visualizations. It is a visual presentation after all, and as they say, a picture is worth a thousand words. However, on the flip side, don’t muddy the point of the slide by putting too many complex graphics on a single slide. A multipanel figure that you might include in a manuscript should often be broken into 1 panel per slide (see Rule 1 ). One way to ensure that you use the graphics effectively is to make a point to introduce the figure and its elements to the audience verbally, especially for data figures. For example, you might say the following: “This graph here shows the measured false-positive rate for an experiment and each point is a replicate of the experiment, the graph demonstrates …” If you have put too much on one slide to present in 1 minute (see Rule 2 ), then the complexity or number of the visualizations is too much for just one slide.

Rule 7: Design to avoid cognitive overload

The type of slide elements, the number of them, and how you present them all impact the ability for the audience to intake, organize, and remember the content. For example, a frequent mistake in slide design is to include full sentences, but reading and verbal processing use the same cognitive channels—therefore, an audience member can either read the slide, listen to you, or do some part of both (each poorly), as a result of cognitive overload [ 4 ]. The visual channel is separate, allowing images/videos to be processed with auditory information without cognitive overload [ 6 ] (Rule 6). As presentations are an exercise in listening, and not reading, do what you can to optimize the ability of the audience to listen. Use words sparingly as “guide posts” to you and the audience about major points of the slide. In fact, you can add short text fragments, redundant with the verbal component of the presentation, which has been shown to improve retention [ 7 ] (see Fig 1 for an example of redundant text that avoids cognitive overload). Be careful in the selection of a slide template to minimize accidentally adding elements that the audience must process, but are unimportant. David JP Phillips argues (and effectively demonstrates in his TEDx talk [ 5 ]) that the human brain can easily interpret 6 elements and more than that requires a 500% increase in human cognition load—so keep the total number of elements on the slide to 6 or less. Finally, in addition to the use of short text, white space, and the effective use of graphics/images, you can improve ease of cognitive processing further by considering color choices and font type and size. Here are a few suggestions for improving the experience for your audience, highlighting the importance of these elements for some specific groups:

• Use high contrast colors and simple backgrounds with low to no color—for persons with dyslexia or visual impairment.
• Use sans serif fonts and large font sizes (including figure legends), avoid italics, underlining (use bold font instead for emphasis), and all capital letters—for persons with dyslexia or visual impairment [ 8 ].
• Use color combinations and palettes that can be understood by those with different forms of color blindness [ 9 ]. There are excellent tools available to identify colors to use and ways to simulate your presentation or figures as they might be seen by a person with color blindness (easily found by a web search).
• In this increasing world of virtual presentation tools, consider practicing your talk with a closed captioning system capture your words. Use this to identify how to improve your speaking pace, volume, and annunciation to improve understanding by all members of your audience, but especially those with a hearing impairment.

Rule 8: Design the slide so that a distracted person gets the main takeaway

It is very difficult to stay focused on a presentation, especially if it is long or if it is part of a longer series of talks at a conference. Audience members may get distracted by an important email, or they may start dreaming of lunch. So, it’s important to look at your slide and ask “If they heard nothing I said, will they understand the key concept of this slide?” The other rules are set up to help with this, including clarity of the single point of the slide (Rule 1), titling it with a major conclusion (Rule 3), and the use of figures (Rule 6) and short text redundant to your verbal description (Rule 7). However, with each slide, step back and ask whether its main conclusion is conveyed, even if someone didn’t hear your accompanying dialog. Importantly, ask if the information on the slide is at the right level of abstraction. For example, do you have too many details about the experiment, which hides the conclusion of the experiment (i.e., breaking Rule 1)? If you are worried about not having enough details, keep a slide at the end of your slide deck (after your conclusions and acknowledgments) with the more detailed information that you can refer to during a question and answer period.

Rule 9: Iteratively improve slide design through practice

Well-designed slides that follow the first 8 rules are intended to help you deliver the message you intend and in the amount of time you intend to deliver it in. The best way to ensure that you nailed slide design for your presentation is to practice, typically a lot. The most important aspects of practicing a new presentation, with an eye toward slide design, are the following 2 key points: (1) practice to ensure that you hit, each time through, the most important points (for example, the text guide posts you left yourself and the title of the slide); and (2) practice to ensure that as you conclude the end of one slide, it leads directly to the next slide. Slide transitions, what you say as you end one slide and begin the next, are important to keeping the flow of the “story.” Practice is when I discover that the order of my presentation is poor or that I left myself too few guideposts to remember what was coming next. Additionally, during practice, the most frequent things I have to improve relate to Rule 2 (the slide takes too long to present, usually because I broke Rule 1, and I’m delivering too much information for one slide), Rule 4 (I have a nonessential detail on the slide), and Rule 5 (I forgot to give a key reference). The very best type of practice is in front of an audience (for example, your lab or peers), where, with fresh perspectives, they can help you identify places for improving slide content, design, and connections across the entirety of your talk.

Rule 10: Design to mitigate the impact of technical disasters

The real presentation almost never goes as we planned in our heads or during our practice. Maybe the speaker before you went over time and now you need to adjust. Maybe the computer the organizer is having you use won’t show your video. Maybe your internet is poor on the day you are giving a virtual presentation at a conference. Technical problems are routinely part of the practice of sharing your work through presentations. Hence, you can design your slides to limit the impact certain kinds of technical disasters create and also prepare alternate approaches. Here are just a few examples of the preparation you can do that will take you a long way toward avoiding a complete fiasco:

• Save your presentation as a PDF—if the version of Keynote or PowerPoint on a host computer cause issues, you still have a functional copy that has a higher guarantee of compatibility.
• In using videos, create a backup slide with screen shots of key results. For example, if I have a video of cell migration, I’ll be sure to have a copy of the start and end of the video, in case the video doesn’t play. Even if the video worked, you can pause on this backup slide and take the time to highlight the key results in words if someone could not see or understand the video.
• Avoid animations, such as figures or text that flash/fly-in/etc. Surveys suggest that no one likes movement in presentations [ 3 , 4 ]. There is likely a cognitive underpinning to the almost universal distaste of pointless animations that relates to the idea proposed by Kosslyn and colleagues that animations are salient perceptual units that captures direct attention [ 4 ]. Although perceptual salience can be used to draw attention to and improve retention of specific points, if you use this approach for unnecessary/unimportant things (like animation of your bullet point text, fly-ins of figures, etc.), then you will distract your audience from the important content. Finally, animations cause additional processing burdens for people with visual impairments [ 10 ] and create opportunities for technical disasters if the software on the host system is not compatible with your planned animation.

Conclusions

These rules are just a start in creating more engaging presentations that increase audience retention of your material. However, there are wonderful resources on continuing on the journey of becoming an amazing public speaker, which includes understanding the psychology and neuroscience behind human perception and learning. For example, as highlighted in Rule 7, David JP Phillips has a wonderful TEDx talk on the subject [ 5 ], and “PowerPoint presentation flaws and failures: A psychological analysis,” by Kosslyn and colleagues is deeply detailed about a number of aspects of human cognition and presentation style [ 4 ]. There are many books on the topic, including the popular “Presentation Zen” by Garr Reynolds [ 11 ]. Finally, although briefly touched on here, the visualization of data is an entire topic of its own that is worth perfecting for both written and oral presentations of work, with fantastic resources like Edward Tufte’s “The Visual Display of Quantitative Information” [ 12 ] or the article “Visualization of Biomedical Data” by O’Donoghue and colleagues [ 13 ].

Acknowledgments

I would like to thank the countless presenters, colleagues, students, and mentors from which I have learned a great deal from on effective presentations. Also, a thank you to the wonderful resources published by organizations on how to increase inclusivity. A special thanks to Dr. Jason Papin and Dr. Michael Guertin on early feedback of this editorial.

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• 8. Creating a dyslexia friendly workplace. Dyslexia friendly style guide. nd. Available from: https://www.bdadyslexia.org.uk/advice/employers/creating-a-dyslexia-friendly-workplace/dyslexia-friendly-style-guide .
• 9. Cravit R. How to Use Color Blind Friendly Palettes to Make Your Charts Accessible. 2019. Available from: https://venngage.com/blog/color-blind-friendly-palette/ .
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• 11. Reynolds G. Presentation Zen: Simple Ideas on Presentation Design and Delivery. 2nd ed. New Riders Pub; 2011.
• 12. Tufte ER. The Visual Display of Quantitative Information. 2nd ed. Graphics Press; 2001.

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Developing the art of scientific presentation

Affiliation.

• 1 Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI 48109-5340, USA. [email protected]
• PMID: 23174073
• DOI: 10.1016/j.jhsa.2012.09.018

Purpose: Few guidelines exist regarding the most effective approach to scientific oral presentations. Our purpose is to (1) develop a standardized instrument to evaluate scientific presentations based on a comprehensive review of the available literature regarding the components and organization of scientific presentations and (2) describe the optimal characteristics of scientific presentations.

Methods: At the Sixty-sixth (2011) Annual Meeting of the American Society for Surgery of the Hand, 69 presentations were evaluated by at least 2 independent observers. A rating instrument was developed a priori to examine presentation content (background, methods, results, and conclusions), presentation style (speech, structure, delivery, slide aesthetics), and overall quality. We examined correlations between reviewers' ratings of each component as well as overall perceived quality of the presentation using regression analysis. Intraclass correlation coefficients were calculated to measure the degree of variation because of reviewer disagreement and identify the aspects of presentations that contribute to overall quality.

Results: Reviewer agreement was high for presentation content, and less than 1% of variation was caused by reviewer disagreement for background, methods, and conclusions. With respect to presentation style, reviewers agreed most frequently regarding speech and slide appearance, and only 9% and 13%, respectively, of the variation was caused by reviewer disagreement. Disagreement was higher for delivery and presentation structure, and 21% of the variation was attributable to reviewer disagreement. Speaker delivery and slide appearance were the most important predictors of presentation quality, followed by the quality of the presentation of conclusions and background information. Presentation of methods and results were not associated with overall presentation quality.

Conclusions: Distinct aspects of presentation content and style correlate with quality, which can be reliably and objectively measured. By focusing on selected concepts with visually simple slides, speakers can enhance their delivery and may potentially improve the audience's comprehension of the study findings.

Copyright © 2012 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

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How to Structure a Scientific Article, Conference Poster and Presentation

• First Online: 22 April 2022

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The main aim of any research endeavor is to disseminate research findings among the scientific community and enrich scientific knowledge. The two most common scientific dissemination modes are journal articles and conference proceedings. Whichever route you decide to follow, the scientific writing that needs to be partaken typically follows the IMRaD format, i.e., Introduction, Methods, Results, and Discussion-Conclusion. This format is applicable for abstracts (unless an unstructured abstract is specifically required), scientific research articles, and conference poster or oral presentations. Understanding the importance of each IMRaD section along with the role of a clear and informative title is your road to success. This also applies to proper citation of other people’s work, ideas, and thoughts. This chapter will guide you, through a stepwise approach, to understand the various elements that make up a successful scientific article, an abstract, a conference poster, and an oral presentation.

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Cuschieri, S. (2022). How to Structure a Scientific Article, Conference Poster and Presentation. In: A Roadmap to Successful Scientific Publishing. Springer, Cham. https://doi.org/10.1007/978-3-030-99295-8_3

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