One of the dirty little secrets in the assessment business is the way that assessments are validated. There are no formal systematic approaches for the validation of tests that are easy for tests users, not versed in statistics, to follow.
Validity is perhaps one of the most misunderstood concepts in HR analytics and psychometrics in particular. The real question should be “How useful is this assessment or intervention?”
The Myth That Criterion Related Validity Is a Simple Correlation Between Test Score and Work Outcome
This is a myth that can be discussed with relative simplicity: Criterion validity is far more than the simple correlations that are