How to Prepare for an IQ Test

Preparation cannot raise your underlying reasoning ability much, but it routinely protects several points that fatigue, unfamiliarity and a noisy room would otherwise cost you. Here is how to spend that effort well.

Published Last updated

Reviewed by Dr. A. Whitfield, PhD, Cognitive Psychologist

Reviews Testora IQ item design, normative scoring and score interpretation copy. Fifteen years of applied psychometrics work in higher education assessment.

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What preparation can and cannot do

There are two separate things people mean by preparing for an IQ test. The first is raising general reasoning ability, which is slow, modest and not achievable in a week. The second is removing everything that makes you perform below your own level on the day — and that is very achievable.

Most of the gain available to you sits in the second category: sleep, timing, environment, format familiarity and pacing. Expect those to be worth a handful of points, and be sceptical of anything promising more.

The week before

Familiarity with item formats is the one form of study that clearly pays. Not because it teaches answers, but because it removes the cost of decoding instructions under time pressure.

  • Work through a few examples of each item type — matrices, number series, mental rotation, logic grids — until the instructions feel obvious.
  • Practise on paper as well as screen, so switching between them does not slow you down.
  • Sort out your sleep pattern rather than your knowledge; a consistent schedule is worth more than extra practice.
  • Decide when you will sit the test and protect that slot in your calendar.

The night before

Sleep is the highest-leverage variable available to you and it acts most strongly on working memory, which is sampled by a substantial share of items. A single short night measurably reduces the number of items you can hold in mind at once.

Skip late practice sessions. Reviewing item types at 1am costs more in fatigue than it returns in familiarity. Prepare the practical things instead: charge the laptop, clear the desk, and set the room up so the morning needs no decisions.

Setting up your environment

Testing conditions vary far more at home than in a supervised setting, and the variation shows up in scores. Standardise what you can.

  • Use a laptop or desktop, not a phone — small screens hurt spatial and matrix items in particular.
  • Silence notifications and close messaging apps; a single interruption mid-item can cost the whole item.
  • Have paper and a pen to hand for intermediate steps, which offloads working memory.
  • Choose a quiet block long enough to finish in one sitting, with water within reach.
  • Sit somewhere with steady light and a comfortable chair, since discomfort competes for attention.

Pacing during the test

Timed reasoning tests reward moving on. The most common self-inflicted loss is spending four minutes on a hard item and leaving three easier items unanswered at the end, because every item contributes to the score regardless of its difficulty.

A workable rule is to give any item one honest pass, and if no structure has appeared, mark your best candidate and continue. Answer everything; an unanswered item is a guaranteed zero, while a considered guess on a narrowed set of options is not.

Read what each item is asking before scanning the options. Matrix items in particular are designed with distractors that look right if you have only noticed one of the two rules operating.

What to avoid

Two things reliably make results less useful. The first is looking answers up or asking someone else, which produces a number that describes nothing and cannot guide anything. The second is repeated back-to-back retakes, which measure your memory of specific items rather than your reasoning.

If you want a second data point, wait at least 30 days. Testora IQ allows unlimited retakes precisely so that you can do this properly rather than immediately.

After the test

Read the confidence interval before the number, then read the domain breakdown before the total. The breakdown is what tells you where to put effort, and it is the part that stays useful after the novelty of the score wears off.

If a domain result looks unlike your everyday experience of yourself, note the conditions you sat under. A working memory result taken at the end of a long day is data about that day as much as about you.

Frequently asked questions

Can you study for an IQ test?
You can become familiar with item formats and improve pacing, which protects points you would otherwise lose. You cannot meaningfully raise general reasoning ability in a short period.
Does practice inflate your IQ score?
Practice on the same items inflates results, which is why retakes should be spaced by at least 30 days. General familiarity with formats produces a smaller and more honest gain.
How long should an IQ test take?
The Testora IQ test takes under 30 minutes and should be completed in one uninterrupted sitting.
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