What is a pre-employment aptitude test?

Three features make a test an aptitude test. It is standardised: every candidate gets the same instructions, the same kinds of question and the same time limit, so scores can be compared. It is timed, usually hard: few people finish the Wonderlic or the CCAT, by their publishers' own accounts. And it is about reasoning rather than knowledge: the math stops at percentages and simple algebra, the vocabulary is everyday, and what is being tested is how quickly you use them.

That separates aptitude tests from three things they are often confused with. A knowledge or skills test (a coding test, a typing test, the TEAS science section) checks what you have learned. A personality questionnaire asks how you tend to behave and has no right answers. A clinical IQ test is given one to one by a psychologist and normed on the whole population. Many invitations mix two of these, which is why it pays to read yours carefully.

Publishers call them cognitive ability tests because they target general reasoning rather than one subject. The three most common in U.S. hiring work the same way: the Wonderlic and the PI Cognitive Assessment both give 50 questions in 12 minutes, and the CCAT gives 50 in 15. The CCAT vs Wonderlic comparison shows how two of them differ in practice.

The same words are used in medicine for short memory and thinking checks, for example after a head injury or in older age. Those are clinical screenings with nothing to pass, and nothing on this page applies to them.

Employers send a general ability test early, usually as a link after you apply, to decide whom to interview. Criteria's CCAT and the Wonderlic are the best-known; companies that use the CCAT lists the users we could confirm with a source. Graduate employers and the Civil Service favour numerical and verbal reasoning tests, often adaptive.

Outside office hiring the same idea takes other names. The military uses the ASVAB to decide who can enlist and which jobs they qualify for. Nursing schools use the ATI TEAS, the HESI A2 or the Wonderlic SLE, and career colleges use the Wonderlic Basic Skills Test. Electrical apprenticeships use the IBEW aptitude test, and maintenance and trades employers use mechanical aptitude tests: try a free mechanical aptitude test or read how they are built.

For decades textbooks said general ability was the single best predictor of job performance. Sackett and colleagues found that the statistical corrections behind those figures were too generous, which lowered the estimates for most methods by about 0.10 to 0.20, while leaving their ranking broadly similar. That is one reason most employers treat an aptitude score as one input next to interviews and experience, not as a verdict.

For you, the practical point is the same either way: the score usually decides whether you get to the interview, so it is worth the few hours it takes to prepare.