The short answer
A cognitive ability test is a hiring assessment that measures thinking skills such as reasoning, memory, verbal and numerical ability, and problem solving, to estimate how well a candidate can solve work problems and learn new job knowledge. It is also called a general mental ability or aptitude test. It matters in hiring because, according to the US Office of Personnel Management (OPM), these tests predict job performance and training success for a wide range of jobs, but they also tend to show larger group differences than other valid methods.
Cognitive ability test explained
OPM describes typical items as arithmetic computations, verbal analogies, reading comprehension, number series completion and spatial relations (visualizing objects in three dimensions). Some tests add up all correct answers into one overall score for general mental ability. Others report separate scores for specific abilities, such as numerical, verbal and reasoning.
Most are multiple choice, timed and taken online. Because they are standardized and machine-scored, they are cheap to give to large groups, which is why they often appear early in high-volume or graduate hiring.
An example number series item: what comes next in 3, 6, 12, 24, ...? The answer is 48, because each number doubles. A verbal analogy: "Invoice is to payment as request is to ...?" A good answer is "response."
What the research says
How to use one responsibly
Because of the group-difference finding, a cognitive test used alone as a hard cutoff is the riskiest way to use one. The EEOC lists cognitive tests among employment tests covered by federal anti-discrimination law, and a test that screens out a protected group at a higher rate must be job-related and consistent with business necessity. In practice: use the test only where the job really demands those abilities, pair it with a structured interview or work sample, and track pass rates by group using the four-fifths rule. Offer accommodations, such as extra time, when candidates ask. This is not legal advice.
For vendors that offer cognitive tests alongside skills tests, see pre-employment assessment software.
Related terms
- Pre-employment assessment: the full range of hiring tests.
- Adverse impact: a much lower selection rate for one group.
- Four-fifths rule: the common first check for adverse impact.
- Situational judgment test: a judgment test often paired with cognitive tests.
- Reasonable accommodation: adjustments such as extra time for disabled candidates.
Questions
Is a cognitive ability test the same as an IQ test?
They are related. Both measure general mental ability, but a hiring cognitive test is usually shorter, timed, and focused on reasoning tasks relevant to work rather than a full clinical IQ assessment.
Can you study for a cognitive test for hiring?
Practice with sample items helps you get used to the format and timing, which can lift your score a little. The underlying abilities change slowly.
Should every job use a cognitive ability test?
No. Use one only when the job requires those abilities, and combine it with other methods. Federal guidance points to larger group differences when cognitive tests are used on their own.
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