Common Medical Exam Mistakes (and How to Stop Making Them)

Under time pressure students skim the vignette, miss a key detail, and answer the question they imagined rather than the one asked. A single word, the patient's age, a timeframe, one abnormal value, often decides the answer.

The fix: read the lead-in question first so you know what you are looking for, then read the stem deliberately. Note the details that change the answer before you look at the options.

A classic pattern in students who underperform is changing a reasoned answer to a wrong one at the last second. They later read the explanation and realise they knew it. The instinct to change feels like caution but usually costs marks.

The fix: if you reasoned your way to an answer from the stem, trust it. Only change it when you find concrete evidence in the vignette that you misread something, not on a vague feeling.

This happens when you like a particular option and invent reasons the patient might fit it: 'well, what if they actually have X?' SBAs reward the best answer for the scenario as written, not the most interesting possibility you can imagine.

The fix: answer the vignette in front of you. If a detail is not stated, do not assume it. Pick the single best answer for the facts given.

Re-reading comfortable topics feels productive and boosts confidence, but it teaches you almost nothing. Students consistently overestimate what they know, partly because familiarity feels like mastery. Highlighting and re-reading make this worse.

The fix: test yourself to find your gaps, then spend your time there. This is the core of active recall, and it is uncomfortable precisely because it works.

Examiners build distractors that are plausible or partly correct to test whether you can prioritise. The trap is choosing an option that is true but not the best answer, or the obvious-looking choice that the stem quietly rules out.

The fix: practise the format until the traps are familiar. Form your own answer from the stem before reading the options, then check which option actually matches. For more on the format itself, see what is an SBA question.