P=f(M X A): Cognitive Ability as a Moderator of the Relationship Between Personality and Job Performance

This study tested the validity of the use of personality tests with aptitude tests as predictors of performance for 203 warehousers using an interactive model. Results indicated cognitive ability explained a significant 2% of the variance in performance, with the interaction between cognitive ability and personality explaining a significant incremental 9% of the variance in performance. These results indicate a need to expand our models of the relationship between personality characteristics and job performance.