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The Ultimate Guide to Preparing Your PhD Dissertation Defense Presentation

January 12, 2023

Chances are, you’ve been waiting years for this moment: preparing your PhD dissertation defense.

You’ve made it this far in your doctorate journey, so you’ll really want to nail the final thing standing between you and your PhD.

We’ll break down everything you need to know, from what the dissertation defense is to how to prepare and more importantly, succeed.

Here’s our ultimate guide for preparing for your PhD dissertation defense.

What Is a PhD Dissertation Defense Presentation?

A PhD dissertation defense is your chance to defend your work in front of the academics analyzing your research. You might also hear this called a “thesis defense.” 

Although the thought of having experts critique you in a cross-examination setting, a dissertation defense is just an opportunity for you to show off your best work .

What Is a PhD Dissertation Committee?

A PhD dissertation committee is a group you assemble to guide you through the dissertation process, from preparation to the revision of your dissertation. 

You choose the members of the committee after all the academic work is finalized. Usually, members will be trusted faculty — people you know well who you might consider a mentor. 

How to Prepare for Your PhD Dissertation Defense Presentation

Preparing for your PhD dissertation defense doesn’t have to be stressful. 

Try using Yoodli , an AI-powered speech coach that analyzes your speaking patterns and identifies areas in which you can improve. By practicing your dissertation defense presentation through Yoodli, you’ll be able to not only improve your speaking, but boost your confidence as well. 

For example, you can take an in-depth look at the filler words you use, including which ones come up the most often and precisely how often they come up.

Here are three more tips for preparing your PhD dissertation defense.

1. Don’t wait around.

One of the best things you can do for yourself when preparing your PhD dissertation defense is to start the work early. You won’t regret starting “too early” like you would regret starting the preparation too late in the game. 

Designing your presentation slides will take time and isn’t something you can slap together in a pinch. Right after your thesis is finalized, start on the slides. Your aim is to impress the committee with a thought-out, clear presentation that presents your work in a good light.

2. Practice, practice, practice.

It doesn’t matter how confident or comfortable you are with regard to your work and the actual PhD dissertation defense — you need to practice like your life depends on it. 

Be sure to practice not only the presentation, but also your body language, like hand gestures . You don’t want to seem too stiff or anxious during your dissertation defense, and practicing all these elements at once gives you an idea of what you need to work on. 

You’ll also want to work on your tone, to make sure you don’t come off as sounding monotonic . You want the committee members to feel interested and engaged. 

Taking one of Yoodli’s free public speaking courses — such as the fundamentals of public speaking — can also build on your confidence and make you feel more comfortable during the dissertation defense. 

Check out Yoodli’s 10-minute course here:

3. Check out other candidates’ presentations.

Sometimes, universities will offer open PhD dissertation defense presentations. If your university is one of them, it’s a great idea to attend a few . If your university doesn’t offer open dissertation presentations, check out other local universities that might offer these.

Watching other candidates’ presentations can help you not only get a firsthand look at how a presentation should (or shouldn’t!) go, but also to affirm that dissertation defense presentations aren’t as awful and scary as you might think they are. You might even get some insight or a few ideas for your own presentation while you’re at it.

The Bottom Line

Preparing for your PhD dissertation defense presentation doesn’t have to be overwhelming. After all, it’s all part of your doctorate journey . With preparation and practice, you can use this opportunity to shine and show off your best work. 

Start practicing with Yoodli.

Getting better at speaking is getting easier. Record or upload a speech and let our AI Speech Coach analyze your speaking and give you feedback.

Video on How To Do a Proper Thesis Defense Presentation

In this guide, we’ll provide you with essential tips and advice on how to ace your thesis defense and impress your committee. We’ll walk you through the essential elements of your presentation, such as your title page, introduction, literature review, methodology, results, discussion, and conclusions slides. For further infromation you can check our full article where we explain into detail how to use SlideModel PowerPoint Templates to save time creating your thesis presentation .

PhD Dissertation Defense Slides Design: Tips for designing the slides

• Tips for designing the slides
• Presentation checklist
• Example slides
• Additional Resources

Example Slides Repository

• Defense slides examples Link to examples dissertation defense slides.

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General tips for slide design

Use a plain background, for engineering, a plain, white background is generally ideal for dissertation proposals and defenses. don't pick a template that is too busy and distracting.,     , remember to add p age numbers, having page numbers in your slides will allow your advisors and peers to give comments. during your presentation, the committee members can use page numbers to reference specific slides for their questions. .

Less is more

Don't put too many words on one slide (no more than 20 words per slide, in general)., when words are inevitable, highlight the keywords in each sentence (see examples from i. daniel posen's and l. cook's slides).

Take advantage of animations

Use animations to explain complicated ideas in figures, tables, etc. you can use different slides instead of the animation functions in ms powerpoint; it will avoid overlapping text boxes or pictures when converted to pdf. , below is an example from c. kolb's defense slides. by a step-by-step revealing process, kolb was able to explain each detail without the distraction of other results. .

Write down your notes 

Write down your notes with either bullet points or full sentences as a script. this can help you to remember what you want to say during your defense. when you are practicing, you won't have to come up with new things to say every time and won't forget what you planned to talk about. .

Example 1: slide with notes - exact words to say (C. Mailings 2017)                                               Example 2: slide with notes - bullet points (I. D. Posen 2016) 

Be smart about the title of each slide

Use descriptive language to summarize the key point of the slide, and avoid using vague terms or the same title for several slides that have different contents..

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Swath and Dive: A pattern for PhD defense presentations

In recent times I’m having the fortune of seeing several of my own doctoral students approach the end of the doctoral journey (yes, it does end!). As they submit the dissertation and prepare for their defense, there is one piece of advice I find myself giving again and again, about how to tackle the impossible task of presenting multiple years of research work in less than one hour. In this post, I describe a “presentation design pattern” for thesis defenses, which builds upon classic conceptualization exercises advocated in the blog. I also illustrate it with an example from my own thesis defense presentation, more than ten years ago (gasp!).

I still vividly remember when I had to prepare my defense presentation, how I tried to shoehorn tons of concepts into an impossibly small number of slides… which still were too many for the 45-minute talk I was supposed to give at the defense. After several rehearsals (with an audience!) and lots of feedback from my colleagues and advisors, I finally stumbled upon a solution. Later on, I have found that a similar structure was also helpful to other doctoral students preparing their defenses.

The rest of the post takes the form of a presentation design pattern , i.e., a description of “a problem that occurs over and over again in our environment, and […] the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice." 1 (a concept originally proposed in architecture, and later used in software engineering, pedagogy and many other fields). I have called this pattern Swath and Dive (for reasons that will become obvious in a minute).

The context: when is this pattern applicable?

When you have to prepare an oral presentation for a doctoral dissertation defense. This pattern is especially helpful if the research is a bit complicated (e.g., composed of multiple contributions , multiple studies, or using multiple research methods) and it is not obvious what contents to include/exclude from the presentation.

What is the problem? What forces are at play?

The main problem this pattern tries to solve is the seeming impossibility of showing 3+ years of research work in less than one hour. While time restrictions and structure for the defense are different in different countries, typically 25-60 minutes are allocated for the presentation. This limited time is a key force at play, but there are others as well:

• The sheer volume of a thesis dissertation’s contents (typically, a 100-500 pages document), which itself is a condensation of years of hard research work.
• Defending PhD students need to prove to the jury that they are now competent, independent researchers (i.e., they master the literature of their topic, are able to apply a research methodology and think critically about the results ).
• The varying levels of expertise and familiarity of the jury members with the concrete thesis topic.
• The varying levels of knowledge that jury members have of the dissertation materials (i.e., did they read the dissertation document in full? with what level of attention?). While all members are supposed to have read the document, in practice there is a lot of heterogeneity in compliance.

The typical end product of these forces is what I call the “skimming” approach to the defense presentation (see picture below): The presentation provides only a very high level overview of the main elements of the dissertation document (sort of like a table of contents). More often than not, too much time is spent in the introductory and related literature parts of the presentation (which are somehow “safe”, less likely to be criticized – another instance of avoidance at work in the PhD ), and time runs out when the student is getting to the really interesting part for the jury (the student’s own work). This approach of course has the critical flaw of not showcasing enough of the student’s own abilities and research outcomes.

Skimming: A typical approach to selecting thesis defense content

How to avoid “skimming” your dissertation? Enter Swath and Dive .

The solution: Swath and Dive

What I propose in this pattern is to structure the presentation in a different way, a way that tries to balance the need for an overview of the dissertation and (at least some of) the richness of the investigation and the hard work the student has put behind it. The proposed structure goes like this:

A swath is “a long broad strip or belt” of grass, often left by a scythe or a lawnmower. In the context of a dissertation defense presentation, this is where the student gives the overview of the main elements of the thesis: key related scientific literature , main research questions , contributions to knowledge the dissertation makes, etc. Long-time readers of the blog will recognize these key elements as the components of the CQOCE diagram , one of the key reflection exercises in the “Happy PhD Toolkit” to (iteratively) understand and discuss with supervisors the overall view of the thesis. Aside from those key elements, probably some notes about the research methodology followed (which are not part of the canonical CQOCE diagram exercise) will also be needed.

In a sense, the Swath is not so different from the typical “skimming” mentioned above. There are several crucial differences, however: 1) when developing the Swath , we need to keep in mind that this is only a part (say, 50%) of the presentation time/length/slides; 2) the Swath should give equal importance to all its key elements (e.g., avoiding too much time on the literature context of the thesis, and making the necessary time for the student’s own research questions, contributions and studies); and 3) the Swath does not need to follow the chapter structure of the dissertation manuscript, rather focusing on the aforementioned key elements (although scattering pointers to the relevant chapters will help orient the jury members who read the dissertation).

Then, within this high-level Swath describing the dissertation, when we mention a particular contribution or study, it is time to do…

This part of the presentation is where the student selects one study or finding of the thesis and zooms in to describe the nitty-gritty details of the evidence the student gathered and analyzed (if it is empirical research), how that was done, and what findings came out of such analysis. The goal here is to help the audience trace at least one of those high-level, abstract elements, all the way down to (some) particular pieces of the raw data, the evidence used to form them.

How to select which part to Dive into? That is a bit up to the student and the particular dissertation. The student can select the main contribution of the dissertation, the most surprising finding, the largest or most impressive study within the work, or the coolest, most novel, or most difficult research method that was used during the dissertation process (e.g., to showcase how skillfully and systematically it was used). The student should give all the steps of the logic leading from low-level evidence to high-level elements – or as much as possible within the time constraints of the presentation (say, 30% of the total length/time/slides).

An essential coda: Limitations and Future Work

Although this didn’t make it to the title of the pattern, I believe it is crucially important to keep in mind another element in any good defense presentation: the limitations of the student’s research work, and the new avenues for research that the dissertation opens. These two areas are often neglected in crafting the defense presentation, maybe with a single slide just copy-pasting a few ideas from the dissertation manuscript (which were themselves hastily written when the student was exhausted and rushing to finish the whole thing). Yet, if the student convinced the jury of her basic research competence and knowledge during the Swath and Dive part, a big part of the jury questions and discussion will focus on these apparently trivial sections.

When doing the limitations, the student should gloss over the obvious (e.g., sample could have been bigger, there are questions about the generalizability of results) and think a bit deeper about alternative explanations that cannot be entirely ruled out, debatable aspects of the methodology followed… squeeze your brain (and ask your supervisors/colleagues) to brainstorm as many ideas as possible, and select the most juicy ones. For future work, also go beyond the obvious and think big : if someone gave you one million dollars (or 10 million!), what cool new studies could continue the path you opened? what new methods could be applied? what experts would you bring from other disciplines to understand the phenomenon from a different perspective? what other phenomena could be studied in the same way as you did this one? Try to close the presentation with a vision of the brighter future that this research might unleash upon the world.

Swath and Dive: a different way of structuring your defense presentation

To understand how this pattern could look like, I can point you to my own thesis defense presentation, which is still available online . This is not because the presentation is perfect in any way, or even a good example (viewing it today I find it overcomplicated, and people complained of motion sickness due to its fast pace and Prezi’s presentation metaphor of moving along an infinite canvas)… but at least it will give you a concrete idea of what I described in abstract terms above.

If you play the presentation , you will notice that the first few slides (frames 1-6) just lay out the main construct the dissertation focuses on (“orchestration”), the structure of the presentation and its mapping to dissertation chapters. Then, the bulk of the presentation (frames 7-117) goes over the main elements of the dissertation according to the CQOCE diagram , i.e., the Swath part of the pattern. Within this high-level view of the dissertation, I inserted a short detour on the research methodology followed (frames 25-28) and, more importantly, several Dives into specific findings and the evidence behind them (frames 43-48, 66-72, and 99-112). Then, frames 118-136 provide the conclusive coda that includes the future work (but not the limitations, which were peppered through the Swath part of the presentation – a dubious choice, if you ask me today).

Variations and related patterns

As you can see from the example above, one does not need to follow the canonical version of Swath and Dive (mine is rather Swath and Three Dives ). Yet, paraphrasing Alexander, that is the point of the pattern: to have the core of the idea, which you can use to produce a million different solutions, tailored to your particular context and subject matter.

It is also important to realize that this structuring pattern for thesis defense presentations does not invalidate (rather, complements) other advice on preparing scientific presentations 2 , 3 , 4 and thesis defenses more specifically 5 . It is all very sound advice! For instance, once you have the structure of your Swath and Dive defense presentation, you could use the NABC technique to ensure that the Need, Approach, Benefits and Competition of each of your knowledge contributions are adequately emphasized. And you can rehearse intensively, and with an audience able to come up with nasty questions. And so on…

May you defend your thesis broadly and deeply!

Do you know other defense presentation structures that work really well in your discipline? Have you used Swath and Dive in your own defense successfully? Let us know (and share your examples) in the comments area below! (or leave a voice message)

Header image by DALL-E

Alexander, C., Ishikawa, S., & Silverstein, M. (1977). A Pattern Language: Towns, Buildings, Construction (Vol. 2). Oxford University Press. ↩︎

Carter, M. (2013). Designing science presentations: A visual guide to figures, papers, slides, posters, and more (First edition). Elsevier/Academic Press. ↩︎

Anholt, R. R. H. (2009). Dazzle ’Em with Style: The Art of Oral Scientific Presentation (2nd ed). Elsevier, Ebsco Publishing [distributor]. ↩︎

Alley, M. (2013). The craft of scientific presentations: Critical steps to succeed and critical errors to avoid (Second edition). Springer. ↩︎

Davis, M., Davis, K. J., & Dunagan, M. M. (2012). Scientific papers and presentations (Third edition). Elsevier/Academic Press. ↩︎

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Luis P. Prieto

Luis P. is a Ramón y Cajal research fellow at the University of Valladolid (Spain), investigating learning technologies, especially learning analytics. He is also an avid learner about doctoral education and supervision, and he's the main author at the A Happy PhD blog.

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