A huge share of the mock exams candidates run at home are printed out, worked through with a pen, and marked by hand against an answer key. That's a perfectly good way to review content. It just isn't what the real exam feels like anymore, and the gap between the two catches people on test day more often than it should.
The short version: the IMAT is sat entirely on a computer, with on-screen reading, clicking to answer, and a flag-and-review system, and candidates who only practice on paper are training content without ever training the format itself.
What test day actually looks like
The IMAT is sat on a computer at the test center, not on paper. You read each question on a screen, click to select an answer, and can flag anything you want to revisit before moving on. A countdown runs in the corner the entire time. None of that is dramatic on its own, but if the only environment you've ever practiced in is a quiet desk with a printed booklet and a pencil, the format itself is new information your brain has to process on the one day it matters most.
Where the mismatch actually shows up
Reading off a screen for close to two hours is measurably more fatiguing than reading the same material on paper, and that fatigue compounds exactly when you need to stay sharp for the last stretch of questions. Annotating a passage by underlining it or scribbling in the margin, a habit a lot of candidates lean on for the reading and data-interpretation questions, isn't available in the same way on screen. And the flag-and-review workflow, deciding what to mark, how many to leave for the end, and whether you'll actually have time to come back to them, is its own small skill that a printed paper never asks you to practice at all.
Why this is easy to miss
Paper mocks still test content accurately, so a candidate can score consistently well on printed practice and reasonably assume they're ready. The format mismatch doesn't show up as a knowledge gap. It shows up as unfamiliar fatigue, slower navigation between questions, and a flagging system used for the first time under real pressure, all on the one attempt that counts.
How to actually close the gap
You don't need to abandon printed practice entirely, it's still convenient and it still works for straightforward content review. But make sure a meaningful share of your full-length mocks, especially the ones closer to test day, are done on a screen with a visible timer, using whatever digital tool lets you click answers and flag questions rather than write on a page. The goal isn't a different set of questions. It's making the mechanics of answering feel ordinary before test day, so nothing about the format itself is competing for your attention when the content already is.
Curious whether your practice conditions are actually matching your real level? The Lounge is a free IMAT score predictor - answer a few questions and see exactly where you'd realistically land, and which universities that score would clear.
Try the free Score PredictorThe content on a printed mock and a computer-based one is identical. The experience of sitting them isn't, and test day is the one time that difference isn't optional.