Critical Thinking MMI Questions

Critical thinking MMI questions ask you to work through a problem that has incomplete information, competing priorities, or two defensible sides, and to reason your way to a position out loud. They appear in most Australian MMIs because universities want evidence that candidates can think in a structured, flexible way, a skill doctors rely on constantly when facing uncertain clinical situations.

The scenarios below are original Deepmock stations covering the prioritisation, ambiguous-data, and trade-off formats that appear most often in Australian interviews. Deepmock students have completed 10,000+ mock MMI stations across 1,200+ scenarios, and critical thinking stations are consistently where candidates rush to an answer before working through the problem, costing them marks.

You do not need special training in logic or statistics. Examiners are listening for whether you can break a problem into parts, state your assumptions clearly, weigh options against each other, and reach a reasoned position without pretending to more certainty than the situation allows.

Practice questions

1. 1. A small community clinic has funding for only one additional service this year: an extra GP day, a diabetes education program, or a mental health nurse. How would you approach deciding between them?

   What examiners look for: Examiners want a clear framework for comparison, such as reach, urgency, and long-term impact, rather than an instinctive pick. Strong answers acknowledge that the "right" choice depends on information not given, and state what they would want to know.

2. 2. You are told that a new intervention reduced hospital readmissions by 30 percent in a pilot study of forty patients. How much weight would you give this result, and why?

   What examiners look for: Examiners assess whether candidates recognise the limits of a small sample size and a single pilot, without dismissing the result entirely. They reward candidates who ask what else they would want to know before drawing a conclusion.

3. 3. Argue for the position that university entry to medicine should be based purely on academic results, then argue against it.

   What examiners look for: Examiners want candidates to construct a genuinely strong case on each side rather than a weak strawman for the position they disagree with. They reward balanced, fair reasoning over a rushed transition to a personal opinion.

4. 4. You are managing a project with three team members and a tight deadline, and one member has just told you they can no longer complete their share of the work. How would you prioritise your next steps?

   What examiners look for: Examiners look for a logical sequence of actions, such as assessing the gap before reallocating tasks, rather than jumping straight to a single fix. Strong candidates consider both the immediate deadline and the wellbeing of the team.

5. 5. A survey finds that patients who saw a specialist reported higher satisfaction than those who saw a GP for the same condition. What questions would you want answered before drawing conclusions from this?

   What examiners look for: Examiners want candidates to identify confounding factors, such as differences in patient expectations or condition severity, rather than accepting the finding at face value. They reward specific, relevant questions over general scepticism.

6. 6. Some argue that mandatory annual health check-ups for all adults would improve population health, while others say they waste resources on people who are not unwell. Argue both sides of this debate.

   What examiners look for: Examiners assess whether candidates can present the efficiency and equity arguments on each side with equal seriousness. They reward candidates who acknowledge genuine merit in the opposing view before stating their own position, if asked for one.

7. 7. You have been given a fixed volunteering budget and must choose between funding a one-off event with high visibility or a smaller ongoing program with less visible but steady impact. Talk through your reasoning.

   What examiners look for: Examiners want candidates to weigh short-term versus long-term value explicitly rather than picking based on instinct alone. Strong answers acknowledge that the right choice depends on the goals of the funding body.

8. 8. A friend tells you that a supplement helped their chronic pain significantly, based on their own experience over several months. How would you think through this claim?

   What examiners look for: Examiners look for recognition of placebo effect, natural symptom fluctuation, and the limits of a single personal anecdote, without dismissing the friend's experience as meaningless. They reward respectful, measured scepticism.

9. 9. A hospital must decide whether to invest in one expensive piece of equipment that helps a small number of patients significantly, or several cheaper improvements that help many patients slightly. How would you approach this decision?

   What examiners look for: Examiners assess whether candidates can articulate the tension between concentrated and distributed benefit clearly. They reward structured comparison over a quick personal preference stated without justification.

10. 10. Argue for the idea that failing students should be given a second chance at a major exam, then argue against it.

    What examiners look for: Examiners want genuinely balanced arguments covering fairness, standards, and practical consequences on each side. They reward candidates who resist collapsing into a personal opinion before both sides have been properly explored.

11. 11. You notice that two data sources report different figures for the same statistic, one much higher than the other. How would you decide which, if either, to trust?

    What examiners look for: Examiners look for candidates to consider factors like methodology, sample size, and source reliability rather than picking the figure that suits their argument. They reward comfort with genuine uncertainty over forced confidence.

12. 12. A community has limited funding and must choose between building a new playground or upgrading an ageing community health centre. How would you think through this trade-off?

    What examiners look for: Examiners want recognition that both options serve real needs, and a reasoned way of comparing them, such as urgency or breadth of impact. Strong answers avoid dismissing either option as obviously less important.

13. 13. You are told a new phone app can predict early signs of a common illness with 90 percent accuracy. What further information would you want before deciding how much to trust this claim?

    What examiners look for: Examiners assess whether candidates understand that accuracy figures alone can be misleading without knowing false positive and false negative rates. They reward specific, technically sound questions over vague scepticism.

14. 14. Argue for the position that social media has been good for public health awareness, then argue against it.

    What examiners look for: Examiners want candidates to build a genuinely strong case on both sides, covering access to information and the spread of misinformation. They reward fair treatment of the opposing view over a lopsided argument.

15. 15. You must choose which of three under-resourced areas within a small organisation to prioritise this year: staff training, equipment upgrades, or community outreach. Walk through how you would decide.

    What examiners look for: Examiners look for a clear method of comparison, such as urgency, cost, and flow-on benefit, rather than an unexplained gut decision. Strong candidates state what additional information would change their answer.

16. 16. A study finds a correlation between a certain diet and improved mood, but the researchers note it does not prove causation. How would you explain this distinction, and why does it matter here?

    What examiners look for: Examiners assess whether candidates can clearly explain confounding variables and reverse causation in accessible terms. They reward candidates who apply the concept specifically to the example rather than reciting a definition.

17. 17. Some argue that patients should always be shown their full medical records without restriction, while others say some information should be filtered by clinicians first. Argue both sides.

    What examiners look for: Examiners want a genuine exploration of patient autonomy and transparency against potential harm from unfiltered, hard-to-interpret information. They reward candidates who avoid a token, one-sided treatment of either side.

18. 18. You are given conflicting advice from two mentors about an important decision in your studies. How would you go about resolving the conflict and deciding what to do?

    What examiners look for: Examiners look for a structured approach, such as identifying the reasoning behind each piece of advice rather than simply picking whichever mentor seems more senior or confident. They reward candidates who take ownership of the final decision.