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Criterion validity involves the correlation between the test and a criterion variable (or variables) which are taken as representative of the construct.
There are two types of criterion validity:
- Concurrent validity: Test data and criterion data are collected at the same time, e.g.,
- Self-report and observer measures collected at the same time
- Predictive validity: Test data is collected first in order to predict criterion data collected at a later point in time, e.g.,
- Employee selection tests are often validated against measures of job performance.
- Measures of risk of recidivism among those convicted of a crime can be validated against measures of recidivism.