Dissertation Defense Questions: What Committees Actually Ask and How to Answer Them

Your defense is on the calendar. Your committee has read your document. And somewhere between now and that day, one question keeps circling in your mind: what are they going to ask me?

After more than fifteen years as a dissertation chair, sitting on the approving side of the table for more than 75 studies, I can tell you something that should lower your shoulders a little: dissertation defense questions are predictable. Committees ask versions of the same questions in nearly every defense, whether it is a PhD or an Ed.D., a proposal defense or a final defense. Students walk in afraid of a pop quiz. What they actually face is a structured conversation, and you can prepare for a structured conversation.

What your committee is actually doing

Here is the mindset shift that changes everything. Your committee already read your document. They are not going to ask you to recite it. They are going to ask you to defend the decisions behind it. Why this problem. Why this method. Why this population. Why these research questions and not others.

Every question in a defense is checking one of a small number of things: do you understand your own study, can you explain your choices, do you know what your study can and cannot claim, and are you the person who did this work. When you understand what a question is checking, the answer becomes much easier to build.

The questions every defense includes

Defense questions fall into territories, and nearly every committee walks through the same ones. Here are the big territories with a sample of what you will hear.

Opening and overview questions

• Tell us about your study in a few minutes.
• What led you to this topic?
• What is the problem your study addresses?

This is where a two minute study summary earns its keep. Practice one. Problem, purpose, method, and what you found or expect to find, in that order, in plain language.

Problem and purpose questions

• Why does this problem matter?
• Who is affected by this problem?
• How does your purpose statement align with the problem?

Research question territory

• Why these research questions?
• How do your research questions align with your methodology?
• What would you change about your research questions now?

Methodology questions

• Why did you choose a qualitative approach instead of a quantitative one?
• Why this design and not another?
• How did you select your participants, and why that number?

Methodology questions are the heart of most defenses. The committee is checking that your method was a choice, not an accident. The pattern for a strong answer is simple: name the choice, name the alternative you considered, and explain why your choice fit your research questions better.

Findings and analysis questions

• How did you analyze your data?
• How did your findings answer your research questions?
• Were there findings that surprised you?

Limitations and contribution questions

• What are the limitations of your study?
• What does your study contribute to the field?
• What should future researchers do next?

Limitation questions trip students up because they feel like traps. They are not. A limitation answer has two parts: name the limitation honestly, then explain why your findings still hold value within it. Committees distrust students who claim no limitations far more than students who name theirs.

How to prepare without rereading your document five more times

Rereading is not preparing. Your committee is not testing your memory of the document. They are testing your ownership of the decisions in it. So prepare answers, out loud, the way you will deliver them.

Take each territory above and write out your answer in a few sentences. Then say it out loud until it sounds like you talking, not like you reciting. If you have a colleague, a partner, or a patient friend, have them read the questions to you cold. The first time you answer a defense question out loud should not be on defense day.

Five mistakes that hurt strong students

• Answering a different question than the one asked. Pause, make sure you heard it, and answer that question.
• Talking too long. A focused two minute answer beats a wandering eight minute one every time.
• Getting defensive. A committee question is not an attack. It is an invitation to show your thinking.
• Claiming too much. Know exactly what your study can claim and stay inside that line.
• Pretending to know. “That is beyond the scope of my study, and here is what I can say” is a strong answer. Bluffing is not.

Where to start

If you are not sure how ready you are, start free. The Defense Readiness Scorecard is ten quick statements that show you exactly where a committee could press you.

When you are ready to build your answers, the Defense Question Packet gives you all 60 questions committees actually ask, organized into the ten territories, with what the committee is checking, an answer framework, and sentence starters for every section. It is the preparation I wish every student had before defense day.

And if you want to rehearse with a real chair asking you real questions before your committee does, that is exactly what my Defense Preparation Session is for.

Your committee wants to pass you. Walk in ready.

Don’t stress. We will get through it.
Dr. Rolanda Anderson, Dissertation Gurus