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Best practice in psychometrics

Articles on assessment science, fair selection and what's changing in the industry — written by our business psychologists.

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Featured AI & assessment · 3 min read

Can candidates cheat psychometric tests with AI — and what should employers do about it?

Generative AI has changed unproctored online testing. We look at what the evidence says about AI-assisted responding, which test types are most exposed, and the detection and design measures that keep results valid.

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Assessment science 3 min read
Game-based assessments in recruitment: what the research shows
Game-based assessments measure candidates through play — short interactive tasks that record not just answers but behaviour. The marketing claims run ahead of the science, but the science is now substantial enough to say what these tools genuinely add to a selection process, and where the cautions lie.
2 Sep 2026
Assessment science 4 min read
Assessing for potential: building a picture no single test can give you
Hiring for potential means predicting what someone will become, not auditing what they already are. No single instrument does that. The research case is for a battery — ability, personality, judgement, skills and game-based measures — each answering a question the others cannot.
2 Sep 2026
Assessment science 5 min read
Situational judgement tests in recruitment: what the research shows
Situational judgement tests present candidates with realistic work dilemmas and ask them to judge the possible responses. They sit between the abstraction of an ability test and the expense of an assessment centre — and the research explains why they have become a fixture of high-volume and high-stakes selection alike.
2 Sep 2026
Assessment science 4 min read
Ability tests in recruitment: what the research shows
For decades, cognitive ability tests were held up as the single best predictor of job performance. Recent research has revised that claim in important ways — without dislodging ability testing from the core of a well-designed selection process. Here is where the evidence now stands.
2 Sep 2026
Assessment science 4 min read
Personality questionnaires in recruitment: what the research shows
Personality questionnaires divide opinion like no other selection tool: dismissed as horoscopes by some, treated as X-rays by others. The research supports neither view. Used well, they add real predictive value; used badly, they measure little more than a candidate's theory of what the employer wants to hear.
2 Sep 2026
Assessment science 3 min read
Norm groups: why the comparison group matters as much as the score
A percentile is not a property of a person. It is a statement about a comparison — and the comparison group is doing more of the work than most report readers realise.
23 Aug 2026
Assessment science 3 min read
What makes a psychometric test valid? Reliability, validity and fairness explained
Three words get used interchangeably in assessment marketing and mean quite different things. Understanding the difference is the difference between buying a test and buying a claim.
23 Aug 2026
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