The Multiple Mini Interview (MMI) can feel unpredictable. You walk into a station, have only a few minutes to demonstrate your skills, and then immediately move on to the next interviewer.

The good news? You don't need to be perfect to perform well in an MMI.

However, there are some common mistakes that can unnecessarily cost you marks. Understanding these mistakes — and knowing how to avoid them — can make your preparation much more effective.

Here are five MMI mistakes to avoid when preparing for medical school interviews.

1. Memorising Your Answers

One of the biggest mistakes applicants make is trying to memorise perfect answers to every possible MMI question.

It might seem like a sensible strategy. After all, if you've prepared an answer for "Why medicine?", an ethics question and a teamwork question, surely you're ready?

Not quite.

MMIs are designed to assess how you think, communicate and respond to different situations. If your answer sounds rehearsed, you may struggle when the interviewer changes the wording or asks an unexpected follow-up question.

A memorised response can also make it harder to listen properly.

Instead, prepare frameworks — not scripts.

Know the key points you want to communicate, but practise expressing them naturally.

For example, when discussing an ethical scenario, you could:

Identify the main ethical issues
Consider the perspectives of those involved
Prioritise patient safety
Discuss the relevant principles
Explain your reasoning
Reach a balanced conclusion

This gives you structure without making your answer sound scripted.

Remember: interviewers want to hear you think, not recite.

2. Talking Too Much and Not Actually Answering the Question

MMI stations are short, so every minute matters.

A common mistake is giving a long answer that contains plenty of information but doesn't actually address the question.

For example, if you're asked:

"Tell me about a time you demonstrated teamwork."

You shouldn't spend most of your answer explaining what teamwork means or describing the entire situation in unnecessary detail.

The interviewer wants to know what you did, what you learned and what that experience tells them about you.

A simple way to improve your answers

Before speaking, take a few seconds to identify exactly what the question is asking.

Then keep your response focused.

For experience-based questions, consider:

Situation → Action → Reflection

Situation: What was happening?
Action: What did you personally do?
Reflection: What did you learn and how might it influence you as a future doctor?

Reflection is particularly important.

Don't just tell the interviewer what happened. Explain why it mattered and what you took from the experience.

3. Forgetting Empathy and Communication

MMIs aren't simply tests of knowledge.

Medical schools may use interviews to assess qualities such as:

Communication
Empathy
Professionalism
Ethical reasoning
Teamwork
Reflection
Resilience
Problem-solving

In a role-play or communication station, knowing the "correct" information isn't enough.

You also need to demonstrate that you can communicate appropriately with another person.

For example, if you're asked to speak to an upset patient, immediately giving them a solution may not be the best approach.

Instead:

Introduce yourself.
Establish rapport.
Listen carefully.
Acknowledge their emotions.
Ask appropriate questions.
Explain the situation clearly.
Check their understanding.
Agree on appropriate next steps.

Avoid medical jargon

Imagine you're explaining something to a patient rather than another medical student.

Good communication isn't about demonstrating how much medical terminology you know. It's about making sure the other person understands you.

4. Trying to Give the "Perfect" Ethical Answer

Ethical MMI stations can be intimidating because candidates often assume there must be one correct answer.

Usually, the more important thing is how you reach your conclusion.

For example, an interviewer might ask you about:

Confidentiality
Consent
Resource allocation
Patient autonomy
Safeguarding
Professional behaviour
A conflict between colleagues

Rather than immediately declaring:

"This is right."

"This is wrong."

show that you understand the competing considerations.

A strong ethical answer should consider:

What is the problem?

Identify the central ethical issue.

Who is affected?

Consider the patient, healthcare professionals and other relevant people.

What principles are involved?

For example, autonomy, beneficence, non-maleficence, justice and confidentiality.

What are the risks?

Patient safety should remain a central consideration.

What would you do?

Explain your proposed course of action and why.

Would you seek help?

Recognise the limits of your knowledge and authority. In real healthcare settings, appropriate escalation is often essential.

You don't need to pretend that every ethical dilemma has an easy answer.

Demonstrating balanced reasoning is more valuable than forcing a simplistic conclusion.

5. Letting One Bad Station Ruin the Rest of Your MMI

This is one of the most important mistakes to avoid.

You walk into a station.

It goes badly.

You leave thinking:

"I've ruined my interview."

Then you spend the next station worrying about the previous one.

Now you've turned one difficult station into two.

MMIs are made up of multiple stations, with each station assessing different skills and attributes. The exact format varies between medical schools, but the purpose of having multiple stations is to assess candidates across a range of situations.

Treat every station as a fresh start.

Once you leave a station:

Leave it behind.

Don't try to work out how many marks you lost.

Don't compare your answer with the candidate next to you.

Don't spend the next few minutes replaying the conversation.

Take a breath, reset and focus on the next station.

Your next interviewer has no reason to know that you found the previous station difficult.

A bad station does not have to become a bad interview.

How to Avoid These MMI Mistakes

The best way to improve isn't simply to read model answers.

You need to practise thinking and communicating under realistic conditions.

Try:

1. Practising unfamiliar scenarios

Don't practise the same five questions repeatedly. Ask someone to give you questions you've never seen before.

2. Timing yourself

MMI stations are deliberately short. Practise reading a scenario, thinking and answering within the time available.

3. Recording yourself

Listen back to your answers.

Are you speaking too quickly?

Are you repeating yourself?

Are you using unnecessary jargon?

Are you actually answering the question?

4. Practising role-play

Reading about communication is very different from actually having a difficult conversation.

Practise with another person whenever possible.

5. Getting feedback

Ask someone to assess your:

Communication
Structure
Empathy
Reasoning
Professionalism
Body language
Reflection

Then practise again.

The Cambridge Clinical MMI Checklist

Before your interview, make sure you can:

☐ Answer questions naturally without memorising scripts

☐ Structure your answers clearly

☐ Demonstrate empathy and active listening

☐ Discuss ethical issues from multiple perspectives

☐ Prioritise patient safety

☐ Explain your reasoning rather than simply stating conclusions

☐ Reflect meaningfully on your experiences

☐ Communicate without unnecessary medical jargon

☐ Stay calm when faced with an unfamiliar scenario

☐ Reset after a difficult station

Final Advice

The strongest MMI candidates aren't necessarily the people who have memorised the most answers.

They're the candidates who can listen, think, communicate and reflect under pressure.

Prepare thoroughly, but leave room to think for yourself.

And remember: if one station doesn't go perfectly, reset and move on.

The next station is a new opportunity to show the interviewer what you can do.

Prepare for Your Medical School Interview with Cambridge Clinical

At Cambridge Clinical, we provide structured medical school interview and MMI preparation, including realistic MMI stations, personalised feedback and guidance from experienced tutors and medical students.

Our interview preparation is designed to help you develop the confidence and communication skills needed to approach your medical school interview effectively.

5 MMI Mistakes That Can Cost You Marks