How to Prepare for a Behavioral Interview, Step by Step

Countdown to Interview Day

1 week before

1. Read the job posting line by line and list every competency it names — teamwork, handling conflicting deadlines, client communication, accuracy under volume. Most postings yield six to ten.
2. Write one real example against each competency in STAR form: Situation, Task, Action, Result (Coursera, undated). Some performance-development versions swap "Task" for "Target", which lets you describe a goal you set yourself rather than one handed to you (Wikipedia, undated) — useful if the role is unsupervised or newly created.

2–3 days before

1. Rehearse out loud, timed. Keep the Situation to roughly 20% of the answer and the Task to about 10% (University of Washington Career Services, undated); one pacing example allots around 30 seconds to the Situation when spoken (Elite Resumes, undated). Record yourself on your phone and check that every story ends on a result someone else could verify.
2. Practise the uncomfortable prompts, not just the flattering ones: a time you used persuasion to convince someone, a stressful situation, and a time you used good judgment to solve a problem (vawizard.org, undated), plus a major setback or failure and a disagreement with a colleague (Boston University School of Public Health, undated). Do not pad or trim the awkward parts — one STAR guide warns that "the interviewer will find out if your story is built on a weak foundation" (vawizard.org, undated).
3. Email or call to confirm the start time, the building and floor or video link, the interviewer's name, and how long the session runs.

Practising the follow-up, not just the answer

You: "At Harwell Logistics, invoices were going out with errors on about one in ten orders. I was asked to get that under 5% in a quarter. I rebuilt the checking step so two people signed off on anything over $10,000, and I retrained the four clerks. By the end of the quarter we were at 3%."

Interviewer: "Who actually pushed back on the extra sign-off, and what did you do about it?"

You: "The two senior clerks did — it added time to their day. I ran it as a four-week trial, tracked how long sign-off really took, and showed it was under two minutes per invoice. One of them still disliked it, so we moved her sign-off to a single batch at 4pm."

Expect at least one probe like that on your strongest story. Prepare the second layer: who objected, what it cost, what you would do differently.

The night before

1. Lay out your folder, documents and clothes, and set two alarms on separate devices.
2. Do one slow pass through your story bank saying only the first sentence of each story — recall practice, not full rehearsal — then four minutes of box breathing (inhale four counts, hold four, exhale four, hold four) before bed. No new material after that.

The morning of

1. Re-read the job posting and your one-page story grid once, in full, at least 90 minutes before you leave.
2. Take a 10–15 minute walk outside and eat something. Arriving under-fed makes long stories wander.

What to Bring and Prepare

One list of what to bring to an interview names ten items, including a folder, copies of your resume, business cards, a portfolio or work samples, references, a pen and notepad, your questions and your talking points (Monster, undated). Build yours around the behavioral format:

• A plain folder or portfolio case — keeps paper flat and gives you somewhere to put anything they hand you.
• Four printed copies of your resume — panels often grow by one person, and the extra interviewer rarely has a printout.
• Your one-page STAR grid (competency in the left column, two-word story label in the right) — glanceable if a question catches you between stories; don't read full answers off it.
• The printed job posting with your competency notes in the margin — lets you tie an answer back to the exact wording they used.
• A written list of 6–8 questions for them, split into role, team and next-steps questions — so you still have two left if they answer the rest unprompted.
• A reference sheet with three names, titles, phone numbers and emails, each person already asked and warned of the date.
• Two work samples you are allowed to show, redacted of client names and figures you signed an agreement over — proof behind the Result half of a STAR story.
• Photo ID — many offices will not issue a visitor badge without it.
• Notepad and two pens — to write down the interviewer's exact job titles and the hiring timeline before you forget them.
• A charged phone with the interviewer's direct number and the confirmation email saved offline — the only thing that helps if the lobby desk has no record of you.
• For a video interview: the tested link, a wired headset, and a phone number you have given them as a backup — test camera, mic and screen share in the same app the day before, not the same app's web version.
• A note of the posted pay range where the posting or your state's pay-transparency rules include one — useful if compensation comes up early and you want to anchor to the employer's own figure rather than guess.

For general do's and don'ts, CareerOneStop, created by the U.S. Department of Labor, publishes interview tips and preparation pages (Park University Guides, undated).

Questions You're Likely to Face

Behavioral questions are used because answers about documented past behavior predict job performance better than traditional questions; one guide cites a validity figure of ".51 per Schmidt & Hunter" for structured behavioral questions against low-to-moderate validity for traditional ones (Extern, undated). Nothing is certain to be asked, but these categories recur across most US employers running a structured panel.

For each row, prepare a real example from work, study or volunteering. CareerOneStop advises including "real-life examples from your education and work experience that illustrate your skills and how you handle challenges" (CareerOneStop, U.S. Department of Labor, undated) — which is exactly what the STAR structure is for (Wikipedia, undated).

Your Day-Of Routine

1. Wake 2.5 hours before your start time. That buys a slow breakfast and a traffic or transit failure without compressing your preparation.
2. Spend 20 minutes reviewing only your one-page STAR grid and the job posting, finishing at least 90 minutes before you leave. Say the first line of each story out loud once; do not rewrite anything.
3. Dress and pack 60 minutes before departure. Check the folder against the bring-list: resumes, ID, references, questions, samples, pens.
4. Leave with a 30-minute buffer on your mapped travel time — 45 minutes if you are driving to an unfamiliar address and need to find parking. For video, sit down and open the link 15 minutes early.
5. Arrive at the building 15 minutes early, and present at reception 10 minutes early. Earlier than that and you are standing in someone's lobby; use the extra five minutes outside for two rounds of box breathing.
6. In the first two minutes, let the interviewer open the dialogue. CareerOneStop advises displaying confidence "but let the interviewer start the dialogue" (CareerOneStop, U.S. Department of Labor, undated). Write down each person's name and title as they introduce themselves.
7. Through the middle 30–45 minutes, answer in STAR order and stop at the Result. Silence after a result usually means the interviewer is writing, not waiting for more.
8. In the last 10 minutes, ask three of your written questions, including who makes the decision and what the next step and date are.
9. Within 15 minutes of leaving, write down every question you were asked, which story you used, and any answer that ran long — this is the raw material for your next interview.
10. Send a thank-you email within 24 hours naming one specific thing from the conversation, and follow up once in writing if the date they gave you passes by more than two business days.

Frequently asked questions

Sources

1. Wikipedia — Situation, task, action, result
2. University of Washington Career Services — STAR Method of Interviewing
3. The Muse — STAR Method: How to Use This Technique to Ace Your Next Job Interview
4. vawizard.org (Virginia Career VIEW/Wizard) — The STAR Method of Behavioral Interviewing
5. Extern — Behavioral Interview Questions: 30+ STAR Examples (2026)
6. Elite Resumes — Behavioral Interview Questions: STAR Method Guide - Elite Resumes 2026
7. Boston University School of Public Health, Careers — Behavioral Interviews
8. Coursera — STAR Interview Questions
9. Novorésumé — STAR Method Interview Questions: Complete Guide with Examples
10. CareerOneStop (U.S. Department of Labor) — Interview Tips
11. CareerOneStop (U.S. Department of Labor) — Get ready to interview
12. Monster — What to Bring to an Interview: The Top 10
13. Park University Guides (Career Success Services) — Interview Preparation - Career Success Services - Guides at Park University