PhD Interview Tips That Actually Help
By Ya'el Courtney, PhD | Stanford Postdoc, Harvard PhD in Neuroscience
Last updated: February 2026
PhD interview weekends are strange. You fly to a campus you may have never visited, shake hands with scientists whose papers you've read, try to sound smart and relaxed at the same time, and then go to a student party where you're told "this isn't part of the interview" while knowing it kind of is.
I did 40 one-on-one faculty interviews across seven programs during my interview season. I was terrified before the first one. By the end, I genuinely looked forward to them. The shift wasn't because I got smarter — it was because I figured out what these conversations actually are, and what they're not.
I now coach students through interview prep every cycle, and I've seen the same anxieties come up over and over. Here's what I wish someone had told me before I started.
What PhD Interviews Actually Are
First, some context that might take the pressure off: getting the interview is the hard part. Depending on the program, somewhere between 7% and 25% of applicants get invited to interview. Once you're there, 30% to 75% of interviewees will receive an offer. The odds have shifted dramatically in your favor.
At most programs, if you've been invited, you are "good enough" on paper. The committee has already read your application and decided you belong there. The interviews are not a test to see if you were lying on your CV. They serve two purposes: confirming that you're a good fit for what the program offers, and — just as importantly — giving you a chance to figure out whether the program is a good fit for what you need.
At Harvard's PhD Program in Neuroscience, we don't even call it interview weekend. We call it recruitment weekend. That framing tells you something about the power dynamic. They want you there.
What to Expect Logistically
Most biomedical PhD interviews span three to four days. Programs typically cover your travel — flights, hotel, sometimes ground transportation. Once on campus, you'll experience a mix of:
One-on-one faculty interviews — usually five to eight of them, lasting 25 to 40 minutes each. These are the core of the experience. Most take place in a PI's office. A current student will often walk you between appointments.
Informational sessions and panels — program directors explaining curriculum, requirements, and resources. These can feel dry, but they're actually useful for comparing programs later.
Campus and city tours — sometimes led by current students, sometimes more formal. Pay attention to how the city feels, not just the buildings.
Social events — dinners, happy hours, and the inevitable student party. I'll talk more about these below, because they matter more than people think.
Meals with current students — often the most informative part of the whole weekend. Students are less guarded than faculty, and a casual lunch conversation can tell you more about a program's culture than any official presentation.
Preparing for One-on-One Interviews
Most programs will share your interview schedule in advance, including the names of the faculty you'll meet with. Here's how to use that information without over-preparing.
For every interviewer: Pull up their lab website. Know what organism they work with, the broad area of their research, and one or two things their lab has done recently. You do not need to read their papers cover to cover. You need enough context to have an intelligent conversation and ask a real question.
For PIs you'd want to work with: Go deeper. Read or at least skim a recent paper. Know what excites you about their work and be ready to articulate why. If their lab is doing something that connects to your prior research experience, be prepared to draw that line. These conversations are where genuine mutual interest starts — and PIs can tell when a student has actually engaged with their work versus skimmed an abstract five minutes ago.
For everyone else: A quick look at their lab page is plenty. Some of your interviewers will be faculty you'd never work with, and that's fine. The program assigns them because they're good at assessing applicants, not because you're expected to know their field.
The Interview Itself
Here's how nearly all 40 of my interviews went: I walked in, sat down, the PI made small talk for a minute, and then asked some version of "So, tell me about your research."
This is your moment. Have a clear, practiced version of your research story — around three to five minutes — that covers who you worked with, what question you were asking, what you personally did, what you found, and why it matters. You do not need to cover every experience on your CV. Pick the one or two most significant and tell them well.
A few things I've learned from coaching dozens of students through this:
Be specific about your contributions. Don't say "the lab studies neural circuits in decision-making." Say "I developed a behavioral assay to test whether mice could discriminate between two similar odor mixtures, and I used calcium imaging to track how representations in piriform cortex changed with learning." Specificity signals that you actually did the work and understood it.
Know your results — and what they mean. The follow-up question is almost always some version of "What did you find?" If your project is still in progress, that's completely fine — say what the preliminary data look like and what you expect. If something didn't work, talk about what you learned from the failure and how you troubleshot it. PIs love hearing about troubleshooting because it demonstrates independence.
Be honest about what you don't know. If a PI asks you a question you can't answer — and they will — just say so. "I'm not sure, but my guess would be..." or "That's a great question, I'd want to look into X and Y to figure that out." Admitting uncertainty gracefully is a strength. Making something up is immediately obvious and a red flag.
Let your interviewer talk. This was the single best piece of advice I got before interview season. Your interviewers are scientists who love their work. Ask them about it. "What project in your lab are you most excited about right now?" or "Where do you see your field going in the next ten years?" are great questions. When a PI lights up talking about their research, the dynamic shifts from evaluation to conversation — and conversations are where connection happens.
Ask real questions at the end. When they say "Do you have any questions for me?" — have some. Not performative questions designed to sound smart, but questions you actually want answered. What do they like about this program? What would they change? What do they look for in a good PhD student? These questions help you evaluate the program and they show genuine engagement.
The Social Events
Let me be direct about this: the student parties and dinners are not formally part of the evaluation. But your behavior at these events is not invisible. If you behave very poorly — getting extremely drunk, being rude to other applicants, saying something inappropriate — it will get back to the admissions committee. I've seen it happen.
That said, the social events exist primarily for your benefit. This is your chance to talk to current students without faculty present and get honest answers about what the program is actually like. Use this time well. Ask the questions you'd feel awkward asking in a formal setting. Are students happy? Do they feel supported? What would they change? What's the worst part?
A couple of practical notes: there is almost always free alcohol at these events. It's completely fine to have a drink or two if that's your thing. Just know your limits. And if you don't drink, that's equally fine — nobody is keeping track.
What to Wear
Business casual. That's it. This means clean, professional-looking clothing that you feel comfortable in — emphasis on comfortable, because you'll be on your feet and walking between buildings for hours. I would strongly recommend against heels for this reason.
I'll share something that still makes me smile: my entire interview wardrobe was thrifted. I couldn't afford to buy business casual clothing new, so I hit up secondhand shops and found a collection of vintage button-downs with slightly wild prints. I paired them with slacks or nice jeans and sneakers or loafers. It worked. Nobody cares if your blazer is from Goodwill. They care about your science.
The Mindset That Helped Me Most
Before my first interview, a mentor told me something that changed my whole approach: Walk in with the energy that they'd be lucky to have you.
I know that sounds arrogant written out. But it's not about being cocky — it's about shifting out of the desperate, please-pick-me energy that most applicants carry into these rooms. You earned this interview. You belong here. The program invited you because they think you might be a great fit, and now it's a two-way conversation about whether they're right.
This mindset also flips how you think about the non-interview parts of the weekend. You're not just trying to impress people. You're gathering information to make one of the biggest decisions of your early career. Take that seriously. Pay attention to how you feel on campus, not just what you hear about the program.
Quick Dos and Don'ts
Do:
Practice your research talk out loud before you go. With a real person, not just in your head.
Bring comfortable shoes. I cannot emphasize this enough.
Bring a notebook and pen for jotting thoughts between interviews.
Get enough sleep the night before your interviews if at all possible.
Be warm and genuine with other applicants — they may become your cohort.
Don't:
Speak negatively about any scientist, institution, or field. Science is a small world and people know each other.
Fabricate or exaggerate answers to technical questions. It's immediately obvious and far worse than saying "I don't know."
Be condescending to other applicants, current students, or staff. If you're the kind of colleague who punches down, people notice.
Stress about one awkward interview. I had at least one per school. It doesn't mean anything.
After the Interview
Send thank-you emails — but don't overthink them. A brief, specific note to one or two PIs you had particularly good conversations with is a nice touch. It doesn't need to be elaborate. Something like: "I really enjoyed our conversation about [specific thing]. Thank you for taking the time — it made me even more excited about the program." Don't send a form email to every single interviewer. Nobody wants that.
Write down your impressions immediately. Within 24 hours of leaving campus, jot down how you felt. What excited you? What concerned you? Which conversations stuck with you? When you're comparing three or four programs weeks later, these notes are invaluable. Your memory of recruitment weekends blurs together fast.
Be patient. Most programs get back to you within two weeks of interviews if you've received an offer. If you don't get an offer, you may not hear anything at all — which is frustrating but common. If you haven't heard by mid-March and want clarity, it's fine to email the program coordinator and ask about your status.
Preparing for PhD interviews and want structured, one-on-one practice? I offer mock interviews and interview coaching for biomedical PhD applicants. We'll work through your research talk, practice fielding tough questions, and make sure you walk in feeling ready.
