What is psychometrics?
Psychometrics is the science of measurement in assessment. It covers both the measurement of a candidate's knowledge or ability, and the evaluation of the test itself — is it reliable, is it fair, and is each question actually doing its job?
In practice, psychometrics gives assessment teams a set of statistics to interrogate their exams: how hard each question proved (item difficulty), how well it separates stronger from weaker candidates (discrimination), and how consistently the whole exam measures (reliability).
Why it matters
Without psychometric evidence, you can't tell which questions are working and which are quietly undermining your exam. Psychometrics is what turns a quiz into a defensible, standardised assessment.
Synap reports item- and exam-level psychometrics automatically — see how it works on the standardised testing page.