Incremental validity of situational judgment tests

Using 3 different samples, the authors assessed the incremental validity of situational judgment inventories (SJIs), relative to job knowledge, cognit ive ability, job experience, and conscientiousness, in the prediction of jo b performance. The SJI was a valid predictor in all 3 samples and increment ally so in 2 samples. Relative to the other predictors, SJI's partial corre lation with performance, controlling for the other 4 predictors, was superi or in most comparisons. Subgroup differences on the SJI also appear to be l ess than those for cognitive ability and job knowledge, but greater than di fferences in conscientiousness. The SJI should prove to be a valuable addit ional measure in the prediction of job performance, but several additional areas of research are suggested.