Total SAT score, average grade earned in high school, and 32 personality variables are examined via forward multiple regression analyses to identify the best combination for predicting GPA in a sample of 201 psychology students. Average grade earned in high school enters first, accounting for 19% of the variance in GPA. Self-control enters second, and SAT third; these account for 9% and 5% of the variance, respectively. No other predictors accounted for substantial portions of variance. This pattern of results converges with findings reported by other investigators using other measures of personality. It was recommended that the global trait of self-control or conscientiousness be systematically assessed and used in college admissions decisions.
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