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Glossary
Whether scores on an assessment correlate with a meaningful external outcome — the criterion.
Criterion validity is the degree to which an assessment's scores correlate with a meaningful external outcome — the "criterion." A burnout scale with criterion validity would predict things like sick days, intent to quit, or clinical burnout diagnoses.
Two flavors are commonly distinguished. Concurrent validity tests the correlation at the same point in time: does the scale agree with current diagnoses? Predictive validity tests how well current scores forecast future outcomes: do high scores today predict quitting next year? Both are reported as correlation coefficients.