Incremental validity of the typical intellectual engagement scale as predictor of different academic performance measures.

The incremental validity of the Typical Intellectual Engagement (TIE) scale (Goff & Ackerman, 1992) as a predictor of academic performance (AP) was tested over and above other established determinants of AP, namely, psychometric g (as extracted from 5 cognitive ability tests) and the Big Five personality traits, assessed by the Neuroticism-Extraversion-Openness Five Factor Inventory (Costa & McCrae, 1992). One hundred four British students were tested on arrival to university, and AP measures were collected longitudinally throughout a 3-year period. TIE, g, and Conscientiousness were the highest correlates of AP. A series of multiple-hierarchical regressions showed that TIE had significant incremental validity (over and above g and the Big Five) in the prediction of AP. Implications are discussed in light of the investment theory of intellectual competence and the utility of self-report inventories as predictors of academic achievement.