How extended matching questions work, and how to practise them

An extended matching question has three parts. A theme names the topic, for instance a class of drugs or a set of diagnoses. An option list, typically much longer than five, gives every plausible answer under that theme. Then several stems, each a short clinical scenario with a lead-in, ask you to choose the single best option from the list for that scenario. The same option can be the answer to more than one stem, and some options are never the answer at all.

Where single best answer items give you five options, extended matching lists commonly run to seven, ten or more. That is the whole point: the distractors are close relatives of the right answer, so recognition of the topic is not enough.

• Reading the option list first. With a long list, that invites you to force a scenario onto an option you already like. Read the stem and lead-in first, form an answer, then find it in the list.
• Missing the discriminator. Near-neighbour options differ by one clinical detail, a timing, a contraindication, an investigation result. The stem contains it; the skill is spotting which detail rules the neighbours out.
• Treating the list as one-answer-each. Options can repeat across stems, so eliminating an option because it has already been used is a false economy.
• Losing time to reflow. In the real paper the option list sits beside the stems that share it; practising on a layout that reshuffles or hides the list trains a habit you will not have on the day.

Practise in the exam's own layout: the themed list beside the stem, unchanged between stems that share a theme. Work every stem from the lead-in and the discriminating detail before you look for the option. Time yourself, because a long option list eats minutes if you re-read it for every stem.

Then let your misses come back. An extended matching error is usually a discriminator you did not weigh correctly, and it is exactly the kind of thing that sticks if you meet it again a few days later rather than once.

SpecialityMCQs presents extended matching with the themed option list beside the stem on desktop, and above it in a collapsible sheet on mobile, and never reflows the list between stems that share a theme, the same layout you meet in MRCOG Part 2 or the MRCPsych EMI sections. Every answer names the guideline or reference it rests on.