What Is an MMI Interview? Format, Stations, Scoring & Prep

Instead of sitting with one interviewer or one panel for 30 to 60 minutes, you move through a simultaneous circuit of separate stations. Both the AAMC and the Association of Faculties of Medicine of Canada (AFMC) report that a typical MMI has 6 to 10 stations, and the full session usually runs from 72 minutes to nearly two hours.

At a standard station, you start with a 2-minute preparation window to read a written prompt. Then you enter the room or virtual breakout space for a conversation or task that lasts 5 to 8 minutes, or 5 to 10 minutes across health professions programs per McMaster University's Student Success Centre. For school-specific station timing, see our UC Riverside School of Medicine MMI guide and our Wayne State University School of Medicine interview guide.

In McMaster University's MD MMI protocol, documented in its Admissions Manual for Interviewers, you get 8 minutes inside the station to discuss the scenario or interact with an actor. When the 8 minutes are up, a bell sounds. You rotate to the next station while the assessor stays in place and uses a 2-minute window between candidates to complete your score sheet without giving feedback.

Because every interviewer stays at the same station for the entire circuit, each assessor scores every rotating candidate on the exact same scenario. In a circuit of 9 stations of 8 minutes each, 9 candidates start at different stations and finish the rotation in 72 minutes.

To rehearse the exact pacing of a 2-minute read and a 5-to-8-minute conversation out loud, Confetto runs single timed MMI stations or full circuits with an AI interviewer that asks follow-up questions and scores your response against a rubric. Start your free week.

McMaster's Admissions Manual for Interviewers states directly that clinical knowledge is no more useful in an MMI than knowledge from chemistry, music, or English literature. Many scenarios have no single right answer. You are expected to apply general knowledge, take a clear position or explore the dilemma from more than one perspective, and defend your reasoning when challenged.

According to the AAMC, the AFMC, and McMaster University's guides, MMI circuits draw from six station types (you can drill all of them in our MMI practice questions with answers):

• Ethical decision-making and health policy stations. You read a prompt about a social, policy, or ethical dilemma and discuss it with the interviewer, who follows up with standardized probing questions.
• Actor role-play and standardized patient stations. You interact for 8 minutes with a human simulator, an actor portraying a specific character, while an observer sits quietly in the room and scores your communication skills. The actor behaves in a standard way for every applicant but reacts to your approach.
• Personal or traditional one-on-one stations. You speak directly with an interviewer about your background, insights, and readiness for the profession.
• Teamwork and collaborative stations. Common in live in-person circuits, two or more candidates work together to complete a timed task or solve a problem while evaluators observe how you collaborate.
• Timed essay-writing stations. You write a response within a set time frame. An essay station may run longer than the spoken stations.
• Rest stations. In-person and some virtual circuits build in a designated rest station where you sit quietly for one rotation to catch your breath.

McMaster University's Admissions Manual for Interviewers publishes three complete sample stations along with the exact background points and assessment questions given to raters.

In Sample Station 1 (Ethical Decision-Making), based on British Columbia's 2012 influenza policy requiring hospital staff to get vaccinated or wear a mask during flu season, you chair a committee investigating a mandatory flu vaccination policy for Ontario healthcare workers. After your opening thoughts on what data to collect, the interviewer challenges you with three follow-ups: whether the policy infringes on healthcare workers' rights, how to boost vaccination rates without a mandate, and whether staff who opt out and catch the flu should take unpaid sick days. Raters check whether you considered the burden of illness, vaccine efficacy and safety, mask effectiveness, staff receptivity, and cost, alongside the ethical tension between worker autonomy and non-maleficence (doing no harm to patients).

In Sample Station 2 (Communication/Actor Station), you and a co-worker from another branch, Sara, must fly to San Diego for a critical business meeting, and you have arrived to drive her to the airport. Inside the room, the actor playing Sara is gripped with fear about flying for the first time since a friend narrowly escaped the World Trade Center on September 11, 2001. The silent observer scores you on three questions: Did you appear empathetic? Did you console Sara without belittling or making light of her concerns? Did you help her consider multiple courses of action? Strong communicators listen well, normalize her anxiety, avoid patronizing statistics, and help her separate the emotional fear from the low statistical danger.

In Sample Station 3 (Personal Interview), you discuss which experiences and insights lead you to believe you would be a good physician. The interviewer probes what personal skills physicians need, how you have shown them in the past, what you would do next year if rejected, and what experiences you wish you had. Raters map your reflections against the Royal College of Physicians and Surgeons of Canada's CanMEDS 2015 Physician Competency Framework: Medical Expert, Communicator, Collaborator, Leader, Health Advocate, Scholar, and Professional.