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Defending Your Dissertation: A Guide

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Written by Luke Wink-Moran | Photo by insta_photos

Dissertation defenses are daunting, and no wonder; it’s not a “dissertation discussion,” or a “dissertation dialogue.” The name alone implies that the dissertation you’ve spent the last x number of years working on is subject to attack. And if you don’t feel trepidation for semantic reasons, you might be nervous because you don’t know what to expect. Our imaginations are great at making The Unknown scarier than reality. The good news is that you’ll find in this newsletter article experts who can shed light on what dissertations defenses are really like, and what you can do to prepare for them.

The first thing you should know is that your defense has already begun. It started the minute you began working on your dissertation— maybe even in some of the classes you took beforehand that helped you formulate your ideas. This, according to Dr. Celeste Atkins, is why it’s so important to identify a good mentor early in graduate school.

“To me,” noted Dr. Atkins, who wrote her dissertation on how sociology faculty from traditionally marginalized backgrounds teach about privilege and inequality, “the most important part of the doctoral journey was finding an advisor who understood and supported what I wanted from my education and who was willing to challenge me and push me, while not delaying me.  I would encourage future PhDs to really take the time to get to know the faculty before choosing an advisor and to make sure that the members of their committee work well together.”

Your advisor will be the one who helps you refine arguments and strengthen your work so that by the time it reaches your dissertation committee, it’s ready. Next comes the writing process, which many students have said was the hardest part of their PhD. I’ve included this section on the writing process because this is where you’ll create all the material you’ll present during your defense, so it’s important to navigate it successfully. The writing process is intellectually grueling, it eats time and energy, and it’s where many students find themselves paddling frantically to avoid languishing in the “All-But-Dissertation” doldrums. The writing process is also likely to encroach on other parts of your life. For instance, Dr. Cynthia Trejo wrote her dissertation on college preparation for Latin American students while caring for a twelve-year-old, two adult children, and her aging parents—in the middle of a pandemic. When I asked Dr. Trejo how she did this, she replied:

“I don’t take the privilege of education for granted. My son knew I got up at 4:00 a.m. every morning, even on weekends, even on holidays; and it’s a blessing that he’s seen that work ethic and that dedication and the end result.”

Importantly, Dr. Trejo also exercised regularly and joined several online writing groups at UArizona. She mobilized her support network— her partner, parents, and even friends from high school to help care for her son.

The challenges you face during the writing process can vary by discipline. Jessika Iwanski is an MD/PhD student who in 2022 defended her dissertation on genetic mutations in sarcomeric proteins that lead to severe, neonatal dilated cardiomyopathy. She described her writing experience as “an intricate process of balancing many things at once with a deadline (defense day) that seems to be creeping up faster and faster— finishing up experiments, drafting the dissertation, preparing your presentation, filling out all the necessary documents for your defense and also, for MD/PhD students, beginning to reintegrate into the clinical world (reviewing your clinical knowledge and skill sets)!”

But no matter what your unique challenges are, writing a dissertation can take a toll on your mental health. Almost every student I spoke with said they saw a therapist and found their sessions enormously helpful. They also looked to the people in their lives for support. Dr. Betsy Labiner, who wrote her dissertation on Interiority, Truth, and Violence in Early Modern Drama, recommended, “Keep your loved ones close! This is so hard – the dissertation lends itself to isolation, especially in the final stages. Plus, a huge number of your family and friends simply won’t understand what you’re going through. But they love you and want to help and are great for getting you out of your head and into a space where you can enjoy life even when you feel like your dissertation is a flaming heap of trash.”

While you might sometimes feel like your dissertation is a flaming heap of trash, remember: a) no it’s not, you brilliant scholar, and b) the best dissertations aren’t necessarily perfect dissertations. According to Dr. Trejo, “The best dissertation is a done dissertation.” So don’t get hung up on perfecting every detail of your work. Think of your dissertation as a long-form assignment that you need to finish in order to move onto the next stage of your career. Many students continue revising after graduation and submit their work for publication or other professional objectives.

When you do finish writing your dissertation, it’s time to schedule your defense and invite friends and family to the part of the exam that’s open to the public. When that moment comes, how do you prepare to present your work and field questions about it?

“I reread my dissertation in full in one sitting,” said Dr. Labiner. “During all my time writing it, I’d never read more than one complete chapter at a time! It was a huge confidence boost to read my work in full and realize that I had produced a compelling, engaging, original argument.”

There are many other ways to prepare: create presentation slides and practice presenting them to friends or alone; think of questions you might be asked and answer them; think about what you want to wear or where you might want to sit (if you’re presenting on Zoom) that might give you a confidence boost. Iwanksi practiced presenting with her mentor and reviewed current papers to anticipate what questions her committee might ask.  If you want to really get in the zone, you can emulate Dr. Labiner and do a full dress rehearsal on Zoom the day before your defense.

But no matter what you do, you’ll still be nervous:

“I had a sense of the logistics, the timing, and so on, but I didn’t really have clear expectations outside of the structure. It was a sort of nebulous three hours in which I expected to be nauseatingly terrified,” recalled Dr. Labiner.

“I expected it to be terrifying, with lots of difficult questions and constructive criticism/comments given,” agreed Iwanski.

“I expected it to be very scary,” said Dr. Trejo.

“I expected it to be like I was on trial, and I’d have to defend myself and prove I deserved a PhD,” said Dr Atkins.

And, eventually, inexorably, it will be time to present.  

“It was actually very enjoyable” said Iwanski. “It was more of a celebration of years of work put into this project—not only by me but by my mentor, colleagues, lab members and collaborators! I felt very supported by all my committee members and, rather than it being a rapid fire of questions, it was more of a scientific discussion amongst colleagues who are passionate about heart disease and muscle biology.”

“I was anxious right when I logged on to the Zoom call for it,” said Dr. Labiner, “but I was blown away by the number of family and friends that showed up to support me. I had invited a lot of people who I didn’t at all think would come, but every single person I invited was there! Having about 40 guests – many of them joining from different states and several from different countries! – made me feel so loved and celebrated that my nerves were steadied very quickly. It also helped me go into ‘teaching mode’ about my work, so it felt like getting to lead a seminar on my most favorite literature.”

“In reality, my dissertation defense was similar to presenting at an academic conference,” said Dr. Atkins. “I went over my research in a practiced and organized way, and I fielded questions from the audience.

“It was a celebration and an important benchmark for me,” said Dr. Trejo. “It was a pretty happy day. Like the punctuation at the end of your sentence: this sentence is done; this journey is done. You can start the next sentence.”

If you want to learn more about dissertations in your own discipline, don’t hesitate to reach out to graduates from your program and ask them about their experiences. If you’d like to avail yourself of some of the resources that helped students in this article while they wrote and defended their dissertations, check out these links:

The Graduate Writing Lab

https://thinktank.arizona.edu/writing-center/graduate-writing-lab

The Writing Skills Improvement Program

https://wsip.arizona.edu

Campus Health Counseling and Psych Services

https://caps.arizona.edu

https://www.scribbr.com/

Nick Byrd, Ph.D.

Nick Byrd, Ph.D.

Using science and technology to understand and improve how we think.

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How To Prepare For A Thesis Defense

I defended my doctoral dissertation in 2020—yes, remotely. I also defended a master’s thesis a few years earlier. I learned a few things and sought plenty of advice between these two defenses. In this post I will share the checklist that I used to prepare for the dissertation defense.

(This checklist assumes that your committee has seen the thesis and you have asked them whether they have any reservations about scheduling a defense date—e.g., in case they are concerned that the you or the dissertation are not ready for defense. Here goes.)

1. Have You Followed The Institutional Requirements?

Universities (and their graduate schools) may have weird rules about thesis defenses. For example, prior to the COVID-19 pandemic, thesis defenses were expected to occur in person. Even during the pandemic the defenses needed to occur during a semester in which the student is enrolled. And revisions to the thesis needed to occur with a certain number of days from the (successful) defense date. There may be many other requirements. So find your institutions’s thesis defense protocols and follow them.

2. Do You Know Your Advisor’s And/Or Committee’s Expectations?

Ask your advisor for their expectations about the defense. Ask for clarification where necessary and try to fulfill those expectations.

  • Should you provide an overview of the thesis at the beginning of the defense?
  • Should your committee provide commentary in advance of the defense?
  • Will anyone expect you to wear any particular style of clothing?
  • About how long might the defense last?
  • Who else is allowed to attend the defense?
  • Do they or the committee expect some sort of gift?

Note: I consider it odd to provide gifts to your advisor and/or committee after a successful defense. And I consider it a conflict of interest to do so before a successful defense. However, I am unsure if my view on this is the norm. So ask your advisor about informal stuff like as well.

I've been many people's advisors and would consider it highly unusualy to receive a gift. A thoughtful card would be nice but more than that is totally unnecessary. So feel free to skip that one & save $. — Anne Churchland (@anne_churchland) June 29, 2019

3. Have You Prepared For Predictable Questions?

I recommend rereading your thesis the week of your defense. This will help you anticipate the kinds of comments and questions that your committee will raise during the defense.

  • If you have thoughts or questions while rereading any part of your thesis, write them down. Then write out some responses to those thoughts and questions.
  • Generate at least one critical question or comment that you might expect from each of your committee members. Then prepare a response to each criticism.

4. Do You Understand The Question?

During the discussion portion, if you do not understand a question, then say so. Better yet, ask the questioner a question that will help them rephrase the question in a way that makes more sense to you. Some examples are below. You may want to prepare your own.

  • “I am not sure I know what section of the dissertation you are referring to. Do you have a particular chapter, section, or page in mind?”
  • “Are you are asking about [X] or [Y]. Or are you asking about something else entirely?”
  • “Can you say more about what you mean by [Z]? For example, what observations would allow me to discern it from something else?

5. What Good Questions Can Replace Bad Questions?

Bad questions are not uncommon in academic presentations . If you get a question that seems bad in some way, translate it into a good question and answer that—without saying that the question is bad and that you’re translating it. For example, “This is an interesting line of inquiry. After all it, it raises questions like, [insert good question here]? To that I would say….”

You may want to consult your prepared list of questions and responses if you receive an unambiguously bad question during the defense.

6. Don’t Forget To Thank Everyone Involved

Thank questioners for their questions. When the defense is over, thank everyone involved for their time and attention (and whatever else they have invested in you, if they have). Don’t forget

  • anyone who provided comments on drafts of the thesis.
  • people who attended presentations of any part of your dissertation.
  • those who provided funds for the thesis research.
  • administrators who handle many of the bureaucratic aspects of your thesis.
  • editors who check your thesis’s compliance with institutional formatting guidelines.

Related Posts

  • 6 Tips For Academic Presentations
  • Two Years In The Life Of A Grad Student: Time Logging Data
  • A Year On The Job Market With A Ph.D. – Some Data
  • Multi-disciplinary Philosophy PhD Programs
  • Upgrading My Laptop From A 2014 Macbook Air to…?

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Nick is a cognitive scientist at Florida State University studying reasoning, wellbeing, and willpower. Check out his blog at byrdnick.com/blog View all posts by Nick Byrd

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Academics How long should my masters thesis defense be? ( self.GradSchool )

submitted 1 year ago by Brumdur_urmduhr

Hello, I am going to be defending my masters thesis in July and am starting the process of preparing the presentation. Of course I am going to speak with my advisor about length, but in your experience how long should a masters thesis defense? My assumption as of now is about 30 minutes.

Thanks for the help!

  • 14 comments

Want to add to the discussion?

Post a comment!

[–] ZoopZoop4321 15 points 16 points 17 points 1 year ago   (0 children)

I just did my defence and in total it was about 1 hour and 45 minutes. I did a brief 15 minute presentation, then there were two rounds of questions from my supervisor committee, and a question period from the audience. This was for a history MA.

[–] KDuce21 10 points 11 points 12 points 1 year ago   (0 children)

Mine was supposed to be 1hr (30min presentation and 30min questions and thesis board discussing with each other)

I presented for 40 min and the entire process took 1hr 6min

[–] EnthalpicallyFavored 13 points 14 points 15 points 1 year ago   (0 children)

Long enough to finish it

[–] Antoniojosh123 6 points 7 points 8 points 1 year ago   (0 children)

Long enough to adhere to your advisor/program. I recommend talking to your advisor or dept head about the length just to make sure you don’t under/overshoot.

For me, it was supposed to be a 40-50 min presentation & somewhere around 20-30 mins of Q&A and closed-door discussions. All around 1:30 to 2 hrs.

Edit - Mechanical Engineering masters

[–] Timmyc62 PhD Military & Strategic Studies 5 points 6 points 7 points 1 year ago   (0 children)

Really differs between programs, as you can already see in the replies. For us, it was a 10-15min presentation, shorter the better, then the main event where the committee grills you for up to two hours with three questions from each member. Then they deliberate: if you did well, then it'll be relatively quick, around 15min. If you did poorly and they have a lot of things they need you to fix, then more than 30 minutes.

[–] [deleted] 1 point 2 points 3 points 1 year ago   (0 children)

I think mine was about 1.5 hours.

[–] crucial_geek 1 point 2 points 3 points 1 year ago   (0 children)

Time limits are not set in stone (but your program may have guidelines). From my experience, a 45 minute to one hour presentation is the norm, followed by the Q&A.

[–] Blakebacon MSc* Kinesiology 1 point 2 points 3 points 1 year ago   (0 children)

Probably at least a few pages

[–] Suspicious_Gazelle18 1 point 2 points 3 points 1 year ago   (0 children)

Definitely varies by program and even by supervisor, so definitely check with them!

My advisor favored 15-20 minute presentations, and then the question and answer period could go as long as needed. There also wasn’t a time limit for how long the committee consulted.

I think he usually had us book 2.5 hours in the conference room (and made sure the committee members all had at least that much time), but I don’t think they usually took the whole time.

Mine was a 20 minute presentation, 20-30 minutes of questions, a 5 minute committee discussion, then I came back and they told me I passed and took about 10 minutes to congratulate me and provide some additional feedback (some to be edited before submission and some for whenever I published on that topic later). So just barely over an hour.

[–] Single_Vacation427 1 point 2 points 3 points 1 year ago   (0 children)

It depends on what you advisor wants. My advisor told me to do a 5 minute presentation because they would have already read it, and didn't want to waste time on that. Then they asked questions, gave me feedback. Not sure how long it was, but maybe 45 minutes total.

Oh, that was PhD, but it shouldn't matter.

[–] kalekail 1 point 2 points 3 points 1 year ago   (0 children)

My presentation (MSE) was about 1 hour and 15 min, not including questions.

[–] RedScience18 1 point 2 points 3 points 1 year ago   (0 children)

Mine was about an hour 20 I think? Tbh, kind of a blur. I think someone was late, pretty sure no one more than skimmed my paper beforehand. We just walked and talked through my presentation a chunk at a time. I was reasonably sure I had a good answer for most of what they asked and explained it will enough, but I'm also pretty confident it was a pity pass. Three years into the subsequent PhD and I still haven't read it since I submitted it the last time to my advisor.

[–] bookbutterfly1999 0 points 1 point 2 points 1 year ago   (0 children)

I was told to book 2hours but i know i should prepare to present for maximum 1.5 hours and let that 30 mins be for discussions/tangential questioning etc, and it doesnt have to be so, it could end up being done faster, all that depends on the committee themselves

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Preparing For Your Dissertation Defense

13 Key Questions To Expect In The Viva Voce

By: Derek Jansen (MBA) & David Phair (PhD) . Reviewed By: Dr Eunice Rautenbach | June 2021

Preparing for your dissertation or thesis defense (also called a “viva voce”) is a formidable task . All your hard work over the years leads you to this one point, and you’ll need to defend yourself against some of the most experienced researchers you’ve encountered so far.

It’s natural to feel a little nervous.

In this post, we’ll cover some of the most important questions you should be able to answer in your viva voce, whether it’s for a Masters or PhD degree. Naturally, they might not arise in exactly the same form (some may not come up at all), but if you can answer these questions well, it means you’re in a good position to tackle your oral defense.

Dissertation and thesis defense 101

Viva Voce Prep: 13 Essential Questions

  • What is your study about and why did you choose to research this in particular?
  • How did your research questions evolve during the research process?
  • How did you decide on which sources to include in your literature review?
  • How did you design your study and why did you take this approach?
  • How generalisable and valid are the findings?
  • What were the main shortcomings and limitations created by your research design?
  • How did your findings relate to the existing literature?
  • What were your key findings in relation to the research questions?
  • Were there any findings that surprised you?
  • What biases may exist in your research?
  • How can your findings be put into practice?
  • How has your research contributed to current thinking in the field?
  • If you could redo your research, how would you alter your approach?

#1: What is your study about and why did you choose to research this in particular?

This question, a classic party starter, is pretty straightforward.

What the dissertation or thesis committee is assessing here is your ability to clearly articulate your research aims, objectives and research questions in a concise manner. Concise is the keyword here – you need to clearly explain your research topic without rambling on for a half-hour. Don’t feel the need to go into the weeds here – you’ll have many opportunities to unpack the details later on.

In the second half of the question, they’re looking for a brief explanation of the justification of your research. In other words, why was this particular set of research aims, objectives and questions worth addressing? To address this question well in your oral defense, you need to make it clear what gap existed within the research and why that gap was worth filling.

#2: How did your research questions evolve during the research process?

Good research generally follows a long and winding path . It’s seldom a straight line (unless you got really lucky). What they’re assessing here is your ability to follow that path and let the research process unfold.

Specifically, they’ll want to hear about the impact that the literature review process had on you in terms of shaping the research aims, objectives and research questions . For example, you may have started with a certain set of aims, but then as you immersed yourself in the literature, you may have changed direction. Similarly, your initial fieldwork findings may have turned out some unexpected data that drove you to adjust or expand on your initial research questions.

Long story short – a good defense involves clearly describing your research journey , including all the twists and turns. Adjusting your direction based on findings in the literature or the fieldwork shows that you’re responsive , which is essential for high-quality research.

You will need to explain the impact of your literature review in the defense

#3: How did you decide on which sources to include in your literature review?

A comprehensive literature review is the foundation of any high-quality piece of research. With this question, your dissertation or thesis committee are trying to assess which quality criteria and approach you used to select the sources for your literature review.

Typically, good research draws on both the seminal work in the respective field and more recent sources . In other words, a combination of the older landmark studies and pivotal work, along with up-to-date sources that build on to those older studies. This combination ensures that the study has a rock-solid foundation but is not out of date.

So, make sure that your study draws on a mix of both the “classics” and new kids on the block, and take note of any major evolutions in the literature that you can use as an example when asked this question in your viva voce.

#4: How did you design your study and why did you take this approach?

This is a classic methodological question that you can almost certainly expect in some or other shape.

What they’re looking for here is a clear articulation of the research design and methodology, as well as a strong justification of each choice . So, you need to be able to walk through each methodological choice and clearly explain both what you did and why you did it. The why is particularly important – you need to be able to justify each choice you made by clearly linking your design back to your research aims, objectives and research questions, while also taking into account practical constraints.

To ensure you cover every base, check out our research methodology vlog post , as well as our post covering the Research Onion .

You have to justify every choice in your dissertation defence

#5: How generalizable and valid are the findings?

This question is aimed at specifically digging into your understanding of the sample and how that relates to the population, as well as potential validity issues in your methodology.

To answer question this well, you’ll need to critically assess your sample and findings and consider if they truly apply to the entire population, as well as whether they assessed what they set out to. Note that there are two components here – generalizability and validity . Generalizability is about how well the sample represents the population. Validity is about how accurately you’ve measured what you intended to measure .

To ace this part of your dissertation defense, make sure that you’re very familiar with the concepts of generalizability , validity and reliability , and how these apply to your research. Remember, you don’t need to achieve perfection – you just need to be aware of the strengths and weaknesses of your research (and how the weaknesses could be improved upon).

Need a helping hand?

defended my thesis reddit

#6: What were the main shortcomings and limitations created by your research design?

This question picks up where the last one left off.

As I mentioned, it’s perfectly natural that your research will have shortcomings and limitations as a result of your chosen design and methodology. No piece of research is flawless. Therefore, a good dissertation defense is not about arguing that your work is perfect, but rather it’s about clearly articulating the strengths and weaknesses of your approach.

To address this question well, you need to think critically about all of the potential weaknesses your design may have, as well as potential responses to these (which could be adopted in future research) to ensure you’re well prepared for this question. For a list of common methodological limitations, check out our video about research limitations here .

#7: How did your findings relate to the existing literature?

This common dissertation defense question links directly to your discussion chapter , where you would have presented and discussed the findings in relation to your literature review.

What your dissertation or thesis committee is assessing here is your ability to compare your study’s findings to the findings of existing research . Specifically, you need to discuss which findings aligned with existing research and which findings did not. For those findings that contrasted against existing research, you should also explain what you believe to be the reasons for this.

As with many questions in a viva voce, it’s both the what and the why that matter here. So, you need to think deeply about what the underlying reasons may be for both the similarities and differences between your findings and those of similar studies.

Your dissertation defense needs to compare findings

#8: What were your key findings in relation to the research questions?

This question is similar to the last one in that it too focuses on your research findings. However, here the focus is specifically on the findings that directly relate to your research questions (as opposed to findings in general).

So, a good way to prepare for this question is to step back and revisit your research questions . Ask yourself the following:

  • What exactly were you asking in those questions, and what did your research uncover concerning them?
  • Which questions were well answered by your study and which ones were lacking?
  • Why were they lacking and what more could be done to address this in future research?

Conquering this part dissertation defense requires that you focus squarely on the research questions. Your study will have provided many findings (hopefully!), and not all of these will link directly to the research questions. Therefore, you need to clear your mind of all of the fascinating side paths your study may have lead you down and regain a clear focus on the research questions .

#9: Were there any findings that surprised you?

This question is two-pronged.

First, you should discuss the surprising findings that were directly related to the original research questions . Going into your research, you likely had some expectations in terms of what you would find, so this is your opportunity to discuss the outcomes that emerged as contrary to what you initially expected. You’ll also want to think about what the reasons for these contrasts may be.

Second, you should discuss the findings that weren’t directly related to the research questions, but that emerged from the data set . You may have a few or you may have none – although generally there are a handful of interesting musings that you can glean from the data set. Again, make sure you can articulate why you find these interesting and what it means for future research in the area.

What the committee is looking for in this type of question is your ability to interpret the findings holistically and comprehensively , and to respond to unexpected data. So, take the time to zoom out and reflect on your findings thoroughly.

Discuss the findings in your defense

#10: What biases may exist in your research?

Biases… we all have them.

For this question, you’ll need to think about potential biases in your research , in the data itself but also in your interpretation of the data. With this question, your committee is assessing whether you have considered your own potential biases and the biases inherent in your analysis approach (i.e. your methodology). So, think carefully about these research biases and be ready to explain how these may exist in your study.

In an oral defense, this question is often followed up with a question on how the biases were mitigated or could be mitigated in future research. So, give some thought not just to what biases may exist, but also the mitigation measures (in your own study and for future research).

#11: How can your findings be put into practice?

Another classic question in the typical viva voce.

With this question, your committee is assessing your ability to bring your findings back down to earth and demonstrate their practical value and application. Importantly, this question is not about the contribution to academia or the overall field of research (we’ll get to that next) – it is specifically asking about how this newly created knowledge can be used in the real world.

Naturally, the actionability of your findings will vary depending on the nature of your research topic. Some studies will produce many action points and some won’t. If you’re researching marketing strategies within an industry, for example, you should be able to make some very specific recommendations for marketing practitioners in that industry.

To help you flesh out points for this question, look back at your original justification for the research (i.e. in your introduction and literature review chapters). What were the driving forces that led you to research your specific topic? That justification should help you identify ways in which your findings can be put into practice.

#12: How has your research contributed to current thinking in the field?

While the previous question was aimed at practical contribution, this question is aimed at theoretical contribution . In other words, what is the significance of your study within the current body of research? How does it fit into the existing research and what does it add to it?

This question is often asked by a field specialist and is used to assess whether you’re able to place your findings into the research field to critically convey what your research contributed. This argument needs to be well justified – in other words, you can’t just discuss what your research contributed, you need to also back each proposition up with a strong why .

To answer this question well, you need to humbly consider the quality and impact of your work and to be realistic in your response. You don’t want to come across as arrogant (“my work is groundbreaking”), nor do you want to undersell the impact of your work. So, it’s important to strike the right balance between realistic and pessimistic .

This question also opens the door to questions about potential future research . So, think about what future research opportunities your study has created and which of these you feel are of the highest priority.

Discuss your contribution in your thesis defence

#13: If you could redo your research, how would you alter your approach?

This question is often used to wrap up a viva voce as it brings the discussion full circle.

Here, your committee is again assessing your ability to clearly identify and articulate the limitations and shortcomings of your research, both in terms of research design and topic focus . Perhaps, in hindsight, it would have been better to use a different analysis method or data set. Perhaps the research questions should have leaned in a slightly different direction. And so on.

This question intends to assess whether you’re able to look at your work critically , assess where the weaknesses are and make recommendations for the future . This question often sets apart those who did the research purely because it was required, from those that genuinely engaged with their research. So, don’t hold back here – reflect on your entire research journey ask yourself how you’d do things differently if you were starting with a  blank canvas today.

Recap: The 13 Key Dissertation Defense Questions

To recap, here are the 13 questions you need to be ready for to ace your dissertation or thesis oral defense:

As I mentioned, this list of dissertation defense questions is certainly not exhaustive – don’t assume that we’ve covered every possible question here. However, these questions are quite likely to come up in some shape or form in a typical dissertation or thesis defense, whether it’s for a Master’s degree, PhD or any other research degree. So, you should take the time to make sure you can answer them well.

If you need assistance preparing for your dissertation defense or viva voce, get in touch with us to discuss 1-on-1 coaching. We can critically review your research and identify potential issues and responses, as well as undertake a mock oral defense to prepare you for the pressures and stresses on the day.

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14 Comments

Jalla Dullacha

Very interesting

Fumtchum JEFFREY

Interesting. I appreciate!

Dargo Haftu

Really appreciating

My field is International Trade

Abera Gezahegn

Interesting

Peter Gumisiriza

This is a full course on defence. I was fabulously enlightened and I gained enough confidence for my upcoming Masters Defence.

There are many lessons to learn and the simplicity in presentationmakes thee reader say “YesI can”

Milly Nalugoti

This is so helping… it has Enlightened me on how to answer specific questions. I pray to make it through for my upcoming defense

Derek Jansen

Lovely to hear that 🙂

bautister

Really educative and beneficial

Tweheyo Charles

Interesting. On-point and elaborate. And comforting too! Thanks.

Ismailu Kulme Emmanuel

Thank you very much for the enlightening me, be blessed

Gladys Oyat

Thankyou so much. I am planning to defend my thesis soon and I found this very useful

Augustine Mtega

Very interesting and useful to all masters and PhD students

Gonzaga

Wow! this is enlightening. Thanks for the great work.

grace pahali

Thank you very much ,it will help me My Master Degree. and am comfortable to my defense.

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How to prepare an excellent thesis defense

Thesis defence

What is a thesis defense?

How long is a thesis defense, what happens at a thesis defense, your presentation, questions from the committee, 6 tips to help you prepare for your thesis defense, 1. anticipate questions and prepare for them, 2. dress for success, 3. ask for help, as needed, 4. have a backup plan, 5. prepare for the possibility that you might not know an answer, 6. de-stress before, during, and after, frequently asked questions about preparing an excellent thesis defense, related articles.

If you're about to complete, or have ever completed a graduate degree, you have most likely come across the term "thesis defense." In many countries, to finish a graduate degree, you have to write a thesis .

A thesis is a large paper, or multi-chapter work, based on a topic relating to your field of study.

Once you hand in your thesis, you will be assigned a date to defend your work. Your thesis defense meeting usually consists of you and a committee of two or more professors working in your program. It may also include other people, like professionals from other colleges or those who are working in your field.

During your thesis defense, you will be asked questions about your work. The main purpose of your thesis defense is for the committee to make sure that you actually understand your field and focus area.

The questions are usually open-ended and require the student to think critically about their work. By the time of your thesis defense, your paper has already been evaluated. The questions asked are not designed so that you actually have to aggressively "defend" your work; often, your thesis defense is more of a formality required so that you can get your degree.

  • Check with your department about requirements and timing.
  • Re-read your thesis.
  • Anticipate questions and prepare for them.
  • Create a back-up plan to deal with technology hiccups.
  • Plan de-stressing activities both before, and after, your defense.

How long your oral thesis defense is depends largely on the institution and requirements of your degree. It is best to consult your department or institution about this. In general, a thesis defense may take only 20 minutes, but it may also take two hours or more. The length also depends on how much time is allocated to the presentation and questioning part.

Tip: Check with your department or institution as soon as possible to determine the approved length for a thesis defense.

First of all, be aware that a thesis defense varies from country to country. This is just a general overview, but a thesis defense can take many different formats. Some are closed, others are public defenses. Some take place with two committee members, some with more examiners.

The same goes for the length of your thesis defense, as mentioned above. The most important first step for you is to clarify with your department what the structure of your thesis defense will look like. In general, your thesis defense will include:

  • your presentation of around 20-30 minutes
  • questions from the committee
  • questions from the audience (if the defense is public and the department allows it)

You might have to give a presentation, often with Powerpoint, Google slides, or Keynote slides. Make sure to prepare an appropriate amount of slides. A general rule is to use about 10 slides for a 20-minute presentation.

But that also depends on your specific topic and the way you present. The good news is that there will be plenty of time ahead of your thesis defense to prepare your slides and practice your presentation alone and in front of friends or family.

Tip: Practice delivering your thesis presentation in front of family, friends, or colleagues.

You can prepare your slides by using information from your thesis' first chapter (the overview of your thesis) as a framework or outline. Substantive information in your thesis should correspond with your slides.

Make sure your slides are of good quality— both in terms of the integrity of the information and the appearance. If you need more help with how to prepare your presentation slides, both the ASQ Higher Education Brief and James Hayton have good guidelines on the topic.

The committee will ask questions about your work after you finish your presentation. The questions will most likely be about the core content of your thesis, such as what you learned from the study you conducted. They may also ask you to summarize certain findings and to discuss how your work will contribute to the existing body of knowledge.

Tip: Read your entire thesis in preparation of the questions, so you have a refreshed perspective on your work.

While you are preparing, you can create a list of possible questions and try to answer them. You can foresee many of the questions you will get by simply spending some time rereading your thesis.

Here are a few tips on how to prepare for your thesis defense:

You can absolutely prepare for most of the questions you will be asked. Read through your thesis and while you're reading it, create a list of possible questions. In addition, since you will know who will be on the committee, look at the academic expertise of the committee members. In what areas would they most likely be focused?

If possible, sit at other thesis defenses with these committee members to get a feel for how they ask and what they ask. As a graduate student, you should generally be adept at anticipating test questions, so use this advantage to gather as much information as possible before your thesis defense meeting.

Your thesis defense is a formal event, often the entire department or university is invited to participate. It signals a critical rite of passage for graduate students and faculty who have supported them throughout a long and challenging process.

While most universities don't have specific rules on how to dress for that event, do regard it with dignity and respect. This one might be a no-brainer, but know that you should dress as if you were on a job interview or delivering a paper at a conference.

It might help you deal with your stress before your thesis defense to entrust someone with the smaller but important responsibilities of your defense well ahead of schedule. This trusted person could be responsible for:

  • preparing the room of the day of defense
  • setting up equipment for the presentation
  • preparing and distributing handouts

Technology is unpredictable. Life is too. There are no guarantees that your Powerpoint presentation will work at all or look the way it is supposed to on the big screen. We've all been there. Make sure to have a plan B for these situations. Handouts can help when technology fails, and an additional clean shirt can save the day if you have a spill.

One of the scariest aspects of the defense is the possibility of being asked a question you can't answer. While you can prepare for some questions, you can never know exactly what the committee will ask.

There will always be gaps in your knowledge. But your thesis defense is not about being perfect and knowing everything, it's about how you deal with challenging situations. You are not expected to know everything.

James Hayton writes on his blog that examiners will sometimes even ask questions they don't know the answer to, out of curiosity, or because they want to see how you think. While it is ok sometimes to just say "I don't know", he advises to try something like "I don't know, but I would think [...] because of x and y, but you would need to do [...] in order to find out.” This shows that you have the ability to think as an academic.

You will be nervous. But your examiners will expect you to be nervous. Being well prepared can help minimize your stress, but do know that your examiners have seen this many times before and are willing to help, by repeating questions, for example. Dora Farkas at finishyourthesis.com notes that it’s a myth that thesis committees are out to get you.

Two common symptoms of being nervous are talking really fast and nervous laughs. Try to slow yourself down and take a deep breath. Remember what feels like hours to you are just a few seconds in real life.

  • Try meditational breathing right before your defense.
  • Get plenty of exercise and sleep in the weeks prior to your defense.
  • Have your clothes or other items you need ready to go the night before.
  • During your defense, allow yourself to process each question before answering.
  • Go to dinner with friends and family, or to a fun activity like mini-golf, after your defense.

Allow yourself to process each question, respond to it, and stop talking once you have responded. While a smile can often help dissolve a difficult situation, remember that nervous laughs can be irritating for your audience.

We all make mistakes and your thesis defense will not be perfect. However, careful preparation, mindfulness, and confidence can help you feel less stressful both before, and during, your defense.

Finally, consider planning something fun that you can look forward to after your defense.

It is completely normal to be nervous. Being well prepared can help minimize your stress, but do know that your examiners have seen this many times before and are willing to help, by repeating questions for example if needed. Slow yourself down, and take a deep breath.

Your thesis defense is not about being perfect and knowing everything, it's about how you deal with challenging situations. James Hayton writes on his blog that it is ok sometimes to just say "I don't know", but he advises to try something like "I don't know, but I would think [...] because of x and y, you would need to do [...] in order to find out".

Your Powerpoint presentation can get stuck or not look the way it is supposed to do on the big screen. It can happen and your supervisors know it. In general, handouts can always save the day when technology fails.

  • Dress for success.
  • Ask for help setting up.
  • Have a backup plan (in case technology fails you).
  • Deal with your nerves.

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First, what does it take to give a successful PhD Defense? How can you prepare, keep the stress levels low, and make sure you have the highest chance of success?

I’ll just say that everyone’s PhD Defense is unique and is unpredictable. Your talk/presentation is only as good as you want it to be. And you cannot fully prepare for all the endless possibility of questions. If you wrote a 200 page thesis, your thesis commitee can pick apart an error bar on a graph on page 133. They can ask you what you meant by a word in a random sentence in any given paragraph. Keep in mind, this is all just apart of the PhD hazing process, and in a sense is just to humble you. At the end of the day, if you wrote a good quality thesis and are CONFIDENT, you should have no problem successfully defending and leaving that room with a sense of relief. Either way, I wanted to share my experience while it is still fresh in my mind

1) Do not underestimate how long it takes to prepare your slides/talk and make sure you give multiple practice talks

When I turned in my thesis two weeks ahead of time to my committee, I thought the hard part was over. Although a very important milestone, don’t let your guard down. If you already have most your slides ready to go, then you are lucky. I ended up getting data at the last minute and my story changed. I had to make many model slides from scratch.

If you want to give a GOOD thesis talk, you need to practice multiple times . And this means that you don’t cram it all in a couple of days right before your talk. I’m not talking about giving just one practice talk. You need to give multiple group practice talks. In between, you need to practice on your own.

You certainly don’t have to memorize every word of your thesis defense talk, but you should have it well-polished. There is no limit (or requirement) on how many practice talks you should give, but give as many talks as it takes until you feel like you are ready. If you are unsure of the quality of your talk (or being “ready”), tape record yourself or watch a video of yourself to see just how good it is. You might be surprised when you play it back to yourself.

You should also time your talk. I noticed that I tend to talk faster (by about 5 minutes) when giving the actual public talk vs. when I practice on my own. The length of the talk can depend on many departmental factors. My talk was ~45-50 minutes long which also leaves time for questions.

Either way, do not procrastinate on your slides and/or talk until days before. Make sure you use the full two weeks to perfect your slides, polish your talk (and be very concise about your words), and review material you are unsure about.

2) Listen to other thesis defense talks

The best way to mentally prepare for your thesis defense talk is to listen to other thesis defense talks. I actually went and got a few talks on DVD (the good ones that I remembered). If their research is on a similar topic as your own, this would be more ideal-but take what you can get. When you watch the talk, ask yourself what makes it good or bad? Were they enthusiastic and sincere? Did they keep the energy throughout the talk? Were there some rough areas of the talk? When nerves are running high, talks may not go as expected. You can battle this nervousness by showing up well-prepared. If you are, the thesis defense talk is just a formality.

If you cannot obtain any thesis defense talks on video, make sure that you go to actual public thesis defense talks. At least go to one so that you have a good idea of how to TIE the whole story together and give your audience the big picture. Keep in mind that you are giving a talk to a general audience . This means that use of jargon and highly technical terms will only put your audience to sleep. Make sure it is clear and understandable. Simplify it the best that you can and put it in the larger context of your research field. Use cartoons or model slides (if necessary) to give your audience the general, overall picture.

3) Have your friends, labmates, and others drill you with questions

What’s the best way to prepare for unforeseen questions? Have others that are familiar with your work drill you with questions. Chances are that even though these questions may not be the actual questions you will be asked either by the public and/or your thesis committee, it prepares you to think on your feet. It also builds your confidence . And the questions that your labmates or friends ask you may just be the same question you will get asked on your defense day.

4) Re-read over your entire thesis and write out your own list of questions

You may be sick of reading your entire thesis over and over by now, but you need to keep everything fresh in your mind. I actually read over my entire thesis multiple times during my final two weeks and came up with my own list of questions that I thought my committee would ask me. In addition, I also came up with a list of questions that I had of my own (questions that I was unsure of or that I thought were a weakness of mine). If you cannot come up with a list of good questions, then you are not trying hard enough.

Even though my committee didn’t ask me my exact list of questions, the process of  coming up with my own list of questions-then finding the answers to those questions (beyond my thesis)-actually helped me gained a deeper understanding of my project. And it was a confidence booster in disguise.

5) Don’t let distractions get to you

Completing your thesis is a huge milestone. Those last two weeks until defense day can be stressful. Whether you are doing job interviews, applying to other jobs, or you want to “jump the gun” and finally start your post-PhD life, don’t give into temptation. Keep your guard up until your actual defense day. This is key to giving a good talk. You need to go in with the mindset that you will kill your presentation and give a long lasting impression to your audience. I have actually heard that some people who gave great thesis defense talks were offered a position shortly after (i.e. a postdoc).

You are going to want to do all those little tasks that you have been putting off for so long because you have spent X amount of months writing your thesis in solitude and you had no time to do them. Your list could be very long. I can tell you that one of the things on my list was to keep publishing blog articles and keep my blog running. I simply did not have enough time. Prioritize and focus on your defense talk and nothing else . If you are looking for jobs during this time period, I will be writing about this in Part 3 of this series.

6) Get plenty of sleep, keep your diet in check, and take care of yourself

This might be the most difficult thing for anyone. I struggled with this the most while writing my thesis. Skipping meals, late nights, overloading your system with caffeine just to stay awake. You have to fight it the best that you can. A month before my defense talk, I hit the gym 3x a week (for the first time in months). Everyone handles the anxiety of their defense talk differently. I am someone who thinks about it constantly. So it becomes hard to focus on other things, like taking care of yourself.

Once your thesis is turned in to your committee members, during those final two weeks- sleep and a proper diet are KEY. The day of your defense, make sure you are well-rested (don’t stay up all night stressing about it) and eat well. Don’t sell yourself short. By taking care of yourself, you ensure that you have the highest probability for giving a great thesis defense talk and showing your committee members that you are confident about your project.

7) Keep your cool and relax

When your defense day comes, you have to remember that you have put in a lot of HARD WORK to get to this point. You know your topic better than anyone . Because of this, you have no reason to be stressed out.

When your committee pushes you and asks you questions, they again will push you to your limits. You will meet a point where you won’t know the answer. Also, a question could simply be a future direction/experiment that you simply haven’t tested yet. Remember that they are simply trying to test your knowledge and humble you. You don’t have to know all the answers. Therefore, when you are answering questions, keep your cool and relax. Answer the questions the best that you can and you should have no problem passing. And in all honesty, the prelim (or qualifying exam) was much harder than the actual defense…

8) Don’t focus on the after-party until you have actually reached the after-party

Who doesn’t want to spend their final two weeks planning the celebration? Although I did have an after-party, I did not go to great efforts to plan it like a wedding party. As I said in #5, prioritize and focus on your thesis defense talk and nothing else. Plan your after-party while you are on break from your practice talk/preparing for questions/working on slides but do not make it a number one priority. Once you have passed, then you can change your focus. The feeling is indescribable (see #10).

9) Have a good structure

A good thesis talk also has a good introduction before going on to the next idea or slide. It should flow in a logical manner and be smooth. That is why #1 is important, because many people don’t spend enough time in the creation of good powerpoint slides. Your slides and talk have to MATCH up , meaning you can’t have really good slides and a mediocre talk (or vice versa) if you want it to go well.

This is why practice is important, and if you spend enough time on BOTH the talk/slides you will give a very good talk. A lot of times while I was actually practicing my talk, I had to go back and change the order/wording of slides or how I introduced certain slides (the wording) so that the flow would be better.

Be formal in how you word things (i.e. say “our data show that”… vs. “you see here that”…). To give a good introduction, it might be wise to use slides that ask a question in between. This question slide (break) in-between your next idea allows for your general audience to CATCH UP and understand your logic . Why are you doing this experiment? If you just show a bunch of your published data with no introduction (and maybe a title that gives an interpretation/punchline), you will overwhelm and bore your audience.

Many scientists forget that although they are an expert on their topic, what seems easy and understandable to them-does not apply to others outside of their field .

Before you go to your next data slides introduce the idea (based on this data I wanted to ask this question). Then tell them WHY you performed this particular experiment (which is basically in the form of a question). Once your audience understands why, go on to the next slide and give them your interpretation. In other words, don’t just jump to the interpretation . This will keep your audience’s attention and make sure that your thesis defense talk gets a lot of positive feedback and leaves a good impression on your committee members (it really does show).

10) Visualize yourself giving your defense each day and think about how good it will feel when it’s over

This one is pretty self explanatory. I will say that when it is all said and done, it feels like a huge burden has been lifted off your shoulders. It is emotional and you finally feel that all that hard work and time that you put in over the years-was all worth it in the end. Good luck to all those who are preparing for their defense talk in the future! Think about what it will be like to get up in front of a large audience and show everyone how you moved a field forward. This is YOUR moment to show everyone you are an expert in your field. The more you keep this mentality, the better your talk will be. Keep your cool and relax (#7) and everything will be fine.

If you would like to see an example video of a defense talk that illustrates the advice I’ve given, a link to my PhD defense can be found here:  http://bit.ly/1sAIT7O

Best of luck to all!

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13 Tips to Prepare for Your PhD Dissertation Defense

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How well do you know your project? Years of experiments, analysis of results, and tons of literature study, leads you to how well you know your research study. And, PhD dissertation defense is a finale to your PhD years. Often, researchers question how to excel at their thesis defense and spend countless hours on it. Days, weeks, months, and probably years of practice to complete your doctorate, needs to surpass the dissertation defense hurdle.

In this article, we will discuss details of how to excel at PhD dissertation defense and list down some interesting tips to prepare for your thesis defense.

Table of Contents

What Is Dissertation Defense?

Dissertation defense or Thesis defense is an opportunity to defend your research study amidst the academic professionals who will evaluate of your academic work. While a thesis defense can sometimes be like a cross-examination session, but in reality you need not fear the thesis defense process and be well prepared.

Source: https://www.youtube.com/c/JamesHaytonPhDacademy

What are the expectations of committee members.

Choosing the dissertation committee is one of the most important decision for a research student. However, putting your dissertation committee becomes easier once you understand the expectations of committee members.

The basic function of your dissertation committee is to guide you through the process of proposing, writing, and revising your dissertation. Moreover, the committee members serve as mentors, giving constructive feedback on your writing and research, also guiding your revision efforts.

The dissertation committee is usually formed once the academic coursework is completed. Furthermore, by the time you begin your dissertation research, you get acquainted to the faculty members who will serve on your dissertation committee. Ultimately, who serves on your dissertation committee depends upon you.

Some universities allow an outside expert (a former professor or academic mentor) to serve on your committee. It is advisable to choose a faculty member who knows you and your research work.

How to Choose a Dissertation Committee Member?

  • Avoid popular and eminent faculty member
  • Choose the one you know very well and can approach whenever you need them
  • A faculty member whom you can learn from is apt.
  • Members of the committee can be your future mentors, co-authors, and research collaborators. Choose them keeping your future in mind.

How to Prepare for Dissertation Defense?

dissertation defense

1. Start Your Preparations Early

Thesis defense is not a 3 or 6 months’ exercise. Don’t wait until you have completed all your research objectives. Start your preparation well in advance, and make sure you know all the intricacies of your thesis and reasons to all the research experiments you conducted.

2. Attend Presentations by Other Candidates

Look out for open dissertation presentations at your university. In fact, you can attend open dissertation presentations at other universities too. Firstly, this will help you realize how thesis defense is not a scary process. Secondly, you will get the tricks and hacks on how other researchers are defending their thesis. Finally, you will understand why dissertation defense is necessary for the university, as well as the scientific community.

3. Take Enough Time to Prepare the Slides

Dissertation defense process harder than submitting your thesis well before the deadline. Ideally, you could start preparing the slides after finalizing your thesis. Spend more time in preparing the slides. Make sure you got the right data on the slides and rephrase your inferences, to create a logical flow to your presentation.

4. Structure the Presentation

Do not be haphazard in designing your presentation. Take time to create a good structured presentation. Furthermore, create high-quality slides which impresses the committee members. Make slides that hold your audience’s attention. Keep the presentation thorough and accurate, and use smart art to create better slides.

5. Practice Breathing Techniques

Watch a few TED talk videos and you will notice that speakers and orators are very fluent at their speech. In fact, you will not notice them taking a breath or falling short of breath. The only reason behind such effortless oratory skill is practice — practice in breathing technique.

Moreover, every speaker knows how to control their breath. Long and steady breaths are crucial. Pay attention to your breathing and slow it down. All you need I some practice prior to this moment.

6. Create an Impactful Introduction

The audience expects a lot from you. So your opening statement should enthrall the audience. Furthermore, your thesis should create an impact on the members; they should be thrilled by your thesis and the way you expose it.

The introduction answers most important questions, and most important of all “Is this presentation worth the time?” Therefore, it is important to make a good first impression , because the first few minutes sets the tone for your entire presentation.

7. Maintain Your Own List of Questions

While preparing for the presentation, make a note of all the questions that you ask yourself. Try to approach all the questions from a reader’s point of view. You could pretend like you do not know the topic and think of questions that could help you know the topic much better.

The list of questions will prepare you for the questions the members may pose while trying to understand your research. Attending other candidates’ open discussion will also help you assume the dissertation defense questions.

8. Practice Speech and Body Language

After successfully preparing your slides and practicing, you could start focusing on how you look while presenting your thesis. This exercise is not for your appearance but to know your body language and relax if need be.

Pay attention to your body language. Stand with your back straight, but relax your shoulders. The correct posture will give you the feel of self-confidence. So, observe yourself in the mirror and pay attention to movements you make.

9. Give Mock Presentation

Giving a trial defense in advance is a good practice. The most important factor for the mock defense is its similarity to your real defense, so that you get the experience that prepares for the actual defense.

10. Learn How to Handle Mistakes

Everyone makes mistakes. However, it is important to carry on. Do not let the mistakes affect your thesis defense. Take a deep breath and move on to the next point.

11. Do Not Run Through the Presentation

If you are nervous, you would want to end the presentation as soon as possible. However, this situation will give rise to anxiety and you will speak too fast, skipping the essential details. Eventually, creating a fiasco of your dissertation defense .

12. Get Plenty of Rest

Out of the dissertation defense preparation points, this one is extremely important. Obviously, sleeping a day before your big event is hard, but you have to focus and go to bed early, with the clear intentions of getting the rest you deserve.

13. Visualize Yourself Defending Your Thesis

This simple exercise creates an immense impact on your self-confidence. All you have to do is visualize yourself giving a successful presentation each evening before going to sleep. Everyday till the day of your thesis defense, see yourself standing in front of the audience and going from one point to another.

This exercise takes a lot of commitment and persistence, but the results in the end are worth it. Visualization makes you see yourself doing the scary thing of defending your thesis.

If you have taken all these points into consideration, you are ready for your big day. You have worked relentlessly for your PhD degree , and you will definitely give your best in this final step.

Have you completed your thesis defense? How did you prepare for it and how was your experience throughout your dissertation defense ? Do write to us or comment below.

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The tips are very useful.I will recomend it to our students.

Excellent. As a therapist trying to help a parent of a candidate, I am very impressed and thankful your concise, clear, action-oriented article. Thank you.

Thanks for your sharing. It is so good. I can learn a lot from your ideas. Hope that in my dissertation defense next time I can pass

The tips are effective. Will definitely apply them in my dissertation.

My dissertation defense is coming up in less than two weeks from now, I find this tips quite instructive, I’ll definitely apply them. Thank you so much.

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Dissertation Defense: Steps To Follow To Succeed

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A dissertation defense is arguably one of the most important milestones in every student’s career. While it signals that your tenure as a student is soon about to close, it validates all your efforts towards your thesis.

Being cautious about including all the necessary details is very important to successfully complete your dissertation proposal defense. This article tells you everything that you need to know about writing a defense that can add great credibility to you as a student.

What is A Dissertation Defense?

The first thing that you need to learn is what is a dissertation defense and what is its purpose. In simple terms, it is a presentation made by a student to defend all the ideas and views that are presented in a dissertation.

The presenter must include details like what is the reason for choosing specific research methods, the theory that has been selected for the paper, and other such points. This presentation is made before an audience that comprises of the university committee, professors and even fellow-students. It is met with questions and answers that gives the student an opportunity to provide more clarity on the dissertation in order to convince the committee to approve it.

Stages of a Dissertation Defense

One of the most important dissertation defense tips provided by several professors is to breakdown the process into three steps:

  • Preparation : This stage involves collection of all the necessary information that must be included in the defense dissertation and making all the arrangements for the actual meeting.
  • The defense meeting : This is where you decide how you will present the defense. The actual meeting is hugely reliant on the performance, body language and the confidence in your oral defense.
  • After the defense meeting : This stage, also known as the follow up, requires you to make the necessary revisions suggested by the university committee. You can even provide bound copies of the whole dissertation to distribute among different members of your departments. In the follow up stage, one must also think about expense that are related to publishing the Ph.D. dissertation defense as well as printing additional copies of the manuscript, if required.

How Long is a Dissertation Defense?

The first thing that a student should know is how long does a dissertation defense last? The length has to be carefully calculated to make the impact that you want. One of the most important steps in the dissertation preparation is to understand how much time each department allocates to the closing oral defense. When you plan in the early stages of your dissertation itself, you can write it in a manner that allows you to defend it in the allocated time.

Usually these meetings including the presentation, the oral defense and the question and answer session last for about two hours. In most cases, these two hours also encompass the time needed by members of the committee to deliberate.

How to Prepare for the Dissertation Defense

Now that you know how long is a dissertation defense, the next step is to prepare well enough to make your presentation impressive.

Here are some tips on how to prepare for a dissertation defense:

  • Watch other students in action to learn about different presentation styles. You can attend defenses of different colleagues in your department as well as other departments in your university.
  • Get all the details about the deadlines and the rules of your college or university about scheduling your defense.
  • Scheduling is also a very important part of your preparation. It is important to note that members of the committee and University chairs need to make time for these defences in a very packed schedule. Coordinate the date, venue and time of your defense as early as possible.
  • Prepare a manuscript adhering to the necessary formatting rules. Review your manuscript thoroughly before you hand it in. During your PH.D, your faculty will also assist you with the defense. For this, they must have a crisp and polished copy of your manuscript.
  • Most colleges have the facility for a pre-defense meeting. This is the best opportunity to sort out any concerns that you may have about the actual meeting. It is a good idea to ask the chairs what types of questions may be put forward and if there are any problems with the defense that need to be resolved. When you prepare for a pre-defense meeting, think of it as the final one and give it your all.
  • Put together all the material that you need for the defense. A detailed, yet to-the-point presentation must be prepared.
  • The final stage of preparation is practicing your presentation over and over again. It is not just the presentation but also the approach towards the questions that you must practice.

Tips To Nail Your Actual Meeting

With these tips you will be one step closer towards a successful defense that will help your dissertation pass and be approved:

  • All meetings should begin by addressing the chair. Make sure you thank all the committee members and the advisors for the efforts that they have put it. This gives you a professional start to the presentation.
  • The presentation should cover the following subjects in brief:
  • The research topic
  • Literature review
  • The methods used for analysis
  • The primary findings of the research
  • Recommendations of additional research on the subject in the focus.
  • Do not get rattled by any discussions among the chairs. They will deliberate on any disagreements or topics of interest. This is a part of the process and is not a reflection of the presentation itself.
  • There are two questions that are commonly asked that you should be prepared for. This includes the weaknesses of the dissertation and the research plans that you have made post-dissertation.
  • Use subtle gestures when you are talking. Do not overuse your hands when doing so. The whole meeting including the question and answer session should have a very formal appeal.
  • The tone of your voice must be assertive without making it seem like you are trying to hard. Be clear and enunciate when you speak.

Once the questions have been answered, the committee will leave the room. Then, after the deliberation, you will be informed if your dissertation has passed or not.

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17 Thesis Defense Questions and How to Answer Them

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A thesis defense gives you the chance to show off your thesis work and demonstrate your expertise in your field of study. During this one- to two-hour discussion with the members of your thesis committee, you'll have some control over how you present your research, but your committee will ask you some prodding questions to test your knowledge and preparedness. They will all have read your thesis beforehand, so their questions will relate to your study, topic, methods, data sample, and other aspects.

A good defense requires mastery of the thesis itself, so before you consider the questions you might face,

1. What is your topic, and why did you choose it?

Give a quick summary in just a few sentences on what you've researched. You could certainly go on for hours about your work, but make sure you prepare a way to give a very brief overview of your thesis. Then, give a quick background on your process for choosing this topic.

2. How does your topic contribute to the existing literature? How is it important?

Many researchers identify a need in the field and choose a topic to bridge the gaps that previous literature has failed to cover. For example, previous studies might not have included a certain population, region, or circumstance. Talk about how your thesis enhances the general understanding of the topic to extend the reach beyond what others have found, and then give examples of why the world needs that increased understanding. For instance, a thesis on romaine lettuce crops in desert climates might bring much-needed knowledge to a region that might not have been represented in previous work.

3. What are the key findings of your study?

When reporting your main results, make sure you have a handle on how detailed your committee wants you to be. Give yourself several options by preparing 1) a very general, quick summary of your findings that takes a minute or less, 2) a more detailed rundown of what your study revealed that is 3-5 minutes long, and 3) a 10- to 15-minute synopsis that delves into your results in detail. With each of these responses prepared, you can gauge which one is most appropriate in the moment, based on what your committee asks you and what has already been requested.

4. What type of background research did you do for your study?

Here you'll describe what you did while you were deciding what to study. This usually includes a literary review to determine what previous researchers have already introduced to the field. You also likely had to look into whether your study was going to be possible and what you would need in order to collect the needed data. Did you need info from databases that require permissions or fees?

5. What was your hypothesis, and how did you form it?

Describe the expected results you had for your study and whether your hypothesis came from previous research experience, long-held expectations, or cultural myths.

6. What limitations did you face when writing your text?

It's inevitable — researchers will face roadblocks or limiting factors during their work. This could be a limited population you had access to, like if you had a great method of surveying university students, but you didn't have a way to reach out to other people who weren't attending that school.

7. Why did you choose your particular method for your study?

Different research methods are more fitting to specific studies than others (e.g., qualitative vs. quantitative ), and knowing this, you applied a method that would present your findings most effectively. What factors led you to choose your method?

8. Who formed the sample group of your study, and why did you choose this population?

Many factors go into the selection of a participant group. Perhaps you were motivated to survey women over 50 who experience burnout in the workplace. Did you take extra measures to target this population? Or perhaps you found a sample group that responded more readily to your request for participation, and after hitting dead ends for months, convenience is what shaped your study population. Make sure to present your reasoning in an honest but favorable way.

9. What obstacles or limitations did you encounter while working with your sample?

Outline the process of pursuing respondents for your study and the difficulties you faced in collecting enough quality data for your thesis. Perhaps the decisions you made took shape based on the participants you ended up interviewing.

10. Was there something specific you were expecting to find during your analysis?

Expectations are natural when you set out to explore a topic, especially one you've been dancing around throughout your academic career. This question can refer to your hypotheses , but it can also touch on your personal feelings and expectations about this topic. What did you believe you would find when you dove deeper into the subject? Was that what you actually found, or were you surprised by your results?

11. What did you learn from your study?

Your response to this question can include not only the basic findings of your work (if you haven't covered this already) but also some personal surprises you might have found that veered away from your expectations. Sometimes these details are not included in the thesis, so these details can add some spice to your defense.

12. What are the recommendations from your study?

With connection to the reasons you chose the topic, your results can address the problems your work is solving. Give specifics on how policymakers, professionals in the field, etc., can improve their service with the knowledge your thesis provides.

13. If given the chance, what would you do differently?

Your response to this one can include the limitations you encountered or dead ends you hit that wasted time and funding. Try not to dwell too long on the annoyances of your study, and consider an area of curiosity; for example, discuss an area that piqued your interest during your exploration that would have been exciting to pursue but didn't directly benefit your outlined study.

14. How did you relate your study to the existing theories in the literature?

Your paper likely ties your ideas into those of other researchers, so this could be an easy one to answer. Point out how similar your work is to some and how it contrasts other works of research; both contribute greatly to the overall body of research.

15. What is the future scope of this study?

This one is pretty easy, since most theses include recommendations for future research within the text. That means you already have this one covered, and since you read over your thesis before your defense, it's already fresh in your mind.

16. What do you plan to do professionally after you complete your study?

This is a question directed more to you and your future professional plans. This might align with the research you performed, and if so, you can direct your question back to your research, maybe mentioning the personal motivations you have for pursuing study of that subject.

17. Do you have any questions?

Although your thesis defense feels like an interrogation, and you're the one in the spotlight, it provides an ideal opportunity to gather input from your committee, if you want it. Possible questions you could ask are: What were your impressions when reading my thesis? Do you believe I missed any important steps or details when conducting my work? Where do you see this work going in the future?

Bonus tip: What if you get asked a question to which you don't know the answer? You can spend weeks preparing to defend your thesis, but you might still be caught off guard when you don't know exactly what's coming. You can be ready for this situation by preparing a general strategy. It's okay to admit that your thesis doesn't offer the answers to everything – your committee won't reasonably expect it to do so. What you can do to sound (and feel!) confident and knowledgeable is to refer to a work of literature you have encountered in your research and draw on that work to give an answer. For example, you could respond, "My thesis doesn't directly address your question, but my study of Dr. Leifsen's work provided some interesting insights on that subject…." By preparing a way to address curveball questions, you can maintain your cool and create the impression that you truly are an expert in your field.

After you're done answering the questions your committee presents to you, they will either approve your thesis or suggest changes you should make to your paper. Regardless of the outcome, your confidence in addressing the questions presented to you will communicate to your thesis committee members that you know your stuff. Preparation can ease a lot of anxiety surrounding this event, so use these possible questions to make sure you can present your thesis feeling relaxed, prepared, and confident.

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How can I pass my PhD thesis defense when nothing has been successful?

For reasons I had very little influence on, most of the projects I participated in over the course of my PhD did not produce reasonable results. I managed to get involved in small side projects and publish at least something, but those are not very novel in itself and not "on the edge of knowledge". The edge of knowledge I pushed is what could go wrong when you are a lone representative of a "service science" in a collaboration, who is asked for input in the beginning, but later overthrown. And in the end, we look at the data together and establish we can't do what we wanted with it. And part of the problem is in fact that my input was not that valued by decision makers. This take-home message is more of a meta-topic and for sure not the main result of my thesis though.

In my thesis, I will (with a heavy heart) go through those projects and discuss them. Discuss what happened, what we did and what we should have done and could have done. This writing process is a very hard piece of work to do and is taking a toll on me right now. But I am doing it and trying to detach myself from the thoughts of how these failures could end up killing my dreams of an academic career.

In my defense, I am supposed to paint a picture-perfect representation of at least one major project. I don't have any options for this. I got caught in doing small "services" to help my collaborators and starting new projects ("we will do better this time") which always ran into a roadblock (mostly before I even got significantly involved).

I do not want to whine about science in my defense. I do not want to explain what went wrong, to the people who did it sitting in the room with a plan to cheer me through my presentation. But what can I do? People usually find one "example" of what they did that worked out well and then "blow this up" to be the main point of their defense, while it might only be a small part of the work they did over the years. But I cannot find a single interesting topic with nice results. They are either trivial or failed.

Has anybody done a "fully failed" PhD defense ... and passed? How would one do this?
  • negative-results

aeismail's user avatar

  • 9 establish we can't do what we wanted with it — That is a positive result, not failure! –  JeffE Commented May 18, 2018 at 15:46
  • They are either trivial or failed. - If this is true, why does your advisor think you are ready to graduate? –  Kimball Commented May 19, 2018 at 1:52
  • @Kimball Because he does not see them as failed... much like JeffE. They are not "failed for all intents and purposes" and there is not nothing learned from them. The problem is more that it is fairly uncomfortable to have a defense talking only about problems you found. I don't want to be seen as the "one who criticizes research because she couldn't get results". –  skymningen Commented May 20, 2018 at 9:14
  • @skymningen I don't know your research, or your results. But try to be very clear in your own mind about the distinction between useful negative results, and "nothing learned" faliures. Remember that almost any negative result is useful, even if just in preventing somebody else from spending time on trying the same thing. –  Flyto Commented May 22, 2018 at 10:45
  • 1 Also, "I am supposed to paint a picture-perfect representation of at least one major project": NO project is perfect, and if a PhD candidate claimed that their project was perfect - that nothing had gone wrong, and nothing could be improved in hindsight - some exaiminers might be surprised! –  Flyto Commented May 22, 2018 at 10:46

2 Answers 2

The specifics here are certainly best discussed with your advisor. They should know about your discipline, and how to frame results in a way that is suitable for the community.

For me, it does not sound at all like you "failed" in your PhD. A PhD is a research project, not a product. Ultimately, you (and your committee) should not evaluate your results based on whether they ended up being useful, but based on whether you had a reasonable thesis and a thorough scientific study of this thesis.

That is, if you proposed a novel approach, collected reasonable data, and thoroughly validated your initial thesis, your research was successful , independently of whether this approach then ended up being used in the larger project context. Sure, it would be nice to be able to say that your approach has then helped these other people to do A, B, C, and D, but the real world does not always work like that.

To me, it is mainly a question of mindset. If you yourself consider your PhD "failed" you will have a hard time selling it to a committee. You need to embrace the idea that you did good research, and not measure the success of your own work on factors outside of your control. In that sense, you should defend what you did and why. You can, and maybe should, discuss why it ended up not being used if there are interesting lessons learned, but stay away from political or interpersonal arguments (these can indeed sound whiney). Stay positive and focus on what you did, not on how much other people then liked the results.

xLeitix's user avatar

  • I do not consider my PhD failed and I am currently doing well with writing (only problem there is my broken heart as some of those projects I used to be passionate for). Maybe I should just bring up my ideas on how to do it better for each example where something went wrong, without specifying that I did mention those before it went wrong, just making clear that I know how to do better? –  skymningen Commented May 20, 2018 at 9:18

The short answer is yes and it is jokingly referred to a "PhD for Effort". More importantly is why it is ok.

Having projects fail teaches you what a bad project looks like

A big part of the reason a PhD helps you grow as a scientist is because in a PhD allows you to fail. I am fond of saying "getting a PhD means you have learned how to fail productively". In a company where they lose money when your experiments don't work, someone will come along and stop you if you are heading down an unproductive path. That makes the projects more likely to succeed, but it means you never had to figure out where things were going wrong. By banging you head against the wall for the last few years you have learned what a bad project looks like so in the future you will know when to cut the cord.

You may have actually failed because you are better

There are a ton of papers out there with unreproduceable results. It has become a big problem for a lot of the top journals. Sometimes this is due to chance, but at least some of it is due to things like unintentional p-hacking. It is possible at least some of your projects went wrong because you had better experimental design or because you did a better job of analyzing your data. If you could only get a PhD for positive results it would be discouraging good scientific practices.

Projects always look less impressive to the person doing them

You have been staring at your work for years. You know all the ins and outs and all the details. Of course nothing looks novel or interesting to you anymore, you know every result like the back of your hand. Try stepping away from it for a little while or getting some fresh eyes on the results. If that doesn't work, try explaining what you did to to a little kid. It is easy for things to feel small when you are explaining the details of the experiment, but when you have to simplify things down to the bigger themes you realize how much it ties in to your field. Some of the best defenses I have gone to were basically just a set of marginally related projects tied together with a good story.

Big picture summary

Even if you didn't get the results you wanted, you became a better scientist. That is why getting a PhD is part of your "education". Instead of being disappointed in the results, step back and let yourself get excited. With fresh eyes, you may realize you have more than you think.

Barker's user avatar

  • Some of them definitely are unpublished because we decided not to fall into the trap of shady analysis, cherry-picking results or the likes. One is so far not published because I personally stated that I would not be okay with following a specific idea that could lead to (statistically very weak) results from rather bad input data because I consider the method to obtain this fraud or at least deception. –  skymningen Commented May 20, 2018 at 9:22
  • @skymningen Good for you; it sounds like the second section definitely applies. If you really feel like you can't pull together a story out of the results you got (which you probably can) focus on your good data analysis and how it kept you from going down the wrong path and led you to the less flashy but objectively more accurate conclusion. No professor is going to feel comfortable rejecting a candidate for good scientific practices and they shouldn't because it sound like you learned exactly what you were supposed to from your PhD. –  Barker Commented May 20, 2018 at 22:23
  • @skymningen Also if you want to publish some of those well executed negative results, check out PLoS One . The journal explicitly has no impact factor requirements and encourages submission of negative results because they care deeply about the quality of the research as opposed to the impact of the results. I know the journal's founder personally and the type of results you are describing is exactly why he started the journal. –  Barker Commented May 20, 2018 at 22:26
  • +1 in particular for "Projects always look less impressive to the person doing them" –  Flyto Commented May 22, 2018 at 10:47

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Woman has been defended after she refused to let her best friend’s partner propose at her wedding

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A woman has been defended after she refused to let her best friend’s partner propose at her wedding .

In a recent post shared to the popular “Am I The A**hole?” Reddit forum, the former bride explained how she got married last month, with everything going off “without a hitch.” However, there was “one awkward moment” before the wedding with her close friend.

“A week before the wedding, my best friend, ‘Maya,’ asked if her fiancé ‘Jake’ could propose to her at my reception,” she wrote. “Apparently, Jake thought it would be ‘romantic’ and was convinced that it would make their moment more special.”

She explained that while she loved her friend, she didn’t want the proposal to take away from the attention on the newlyweds at the wedding, so she said no to the request.

“The idea of having my wedding overshadowed by their proposal didn’t sit right with me. I politely said no and suggested they have their own special day. Maya seemed a little disappointed, but she said she understood,” the woman continued.

However, the former bride noticed during the wedding day that both Maya and Jake “were acting distant.” Since it was “clear that something was off,” she then learned that Jake was annoyed that he couldn’t do the proposal.

AITA for refusing to let my best friend’s fiancé propose at my wedding? by u/pretty_priya1 in AmItheAsshole

“I later found out that Jake was upset with me for ‘ruining his plan’ and felt like I’d been selfish for not allowing them to share in the love of the day,” she concluded.

The Reddit post has quickly gone viral, with more than 4,900 upvotes. In the comments, multiple people criticized the idea of someone proposing at a friend’s wedding, since it takes away from the bride and groom’s big day.

“Your wedding day is about celebrating you and your partner, not serving as a backdrop for someone else’s proposal. Proposals at weddings are often seen as inappropriate because they can shift the focus away from the couple being celebrated, which is exactly why you were right to say no,” one wrote. “Honestly, your friend should have known better than to ask in the first place. It’s common sense that it’s rude to make someone else’s wedding about you, and I don’t understand why she even thought that would be okay.”

“Were Maya and Jake also planning on paying for half the costs of the reception, caterer, DJ, decorations, etc.? I mean they wanted to share in the love of the day so did that mean they wanted to also share in the costs of the day?” another quipped.

“There should be a special place in the afterlife for people who hijack others’ special events (weddings, birthdays, engagement parties, funerals, anniversaries, etc.) to announce their own special event,” a third wrote. “My only exception to this rule would be if an unexpected emergency or family tragedy takes place during/just-before said event.”

Other people questioned if the proposal between Maya and Jake actually happened before the wedding since she was the one who asked if it could happen.

“How is a proposal she knows about and is taking part in planning gonna be special at all? That s***s not even real at that point. Which feels even worse. Like it’s almost fake?” one wrote. “You want to hijack my wedding to put on this proposal skit for my friends and family? Weird, selfish and stupid.”

“Why is SHE asking if she can get proposed TO at your wedding? That means the proposal has effectively already happened and they are just putting on a play for attention,” another added.

“If SHE asked if HE could propose to her at your wedding – they were not asking for a proposal, they were asking you to subsidize their engagement party. If it is planned by the couple together, then it is no longer a ‘proposal,’” a third agreed.

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I initially decided to do a postdoc because I defended my thesis earlier than I expected, and I did not have a clear vision of what I wanted to do with my degree.

Even after I defended my thesis and moved to a new university to take a postdoc, we started a new project that bore fruit right up until the time I left academic research.

Since my father was not a geologist, we had to overcome many communication problems, but with his help, I completed the interpretation and defended my thesis , completing my M.S. in structural geology in 1998.

It should be noted that this paper published two month after I defended my PhD thesis .

At the end of last year, I defended my Ph.D. thesis in biological anthropology in Marseille.

The same semester I defended my Ph.D. thesis , I'd begun teaching as an adjunct professor at a local university.

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