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Author: Pillow, David R.
Resulting in 3 citations.
1. Coyle, Thomas R.
Pillow, David R.
SAT and ACT Predict College GPA After Removing g
Intelligence 36,6 (November-December 2008): 719-729.
Also: http://www.sciencedirect.com/science/article/pii/S0160289608000603
Cohort(s): NLSY97
Publisher: Elsevier
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); g Factor; I.Q.; Intelligence; Modeling, Structural Equation; Test Scores/Test theory/IRT; Tests and Testing

This research examined whether the SAT and ACT would predict college grade point average (GPA) after removing g from the tests. SAT and ACT scores and freshman GPAs were obtained from a university sample (N = 161) and the 1997 National Longitudinal Study of Youth (N = 8984). Structural equation modeling was used to examine relationships among g, GPA, and the SAT and ACT. The g factor was estimated from commercial cognitive tests (e.g., Wonderlic and Wechsler Adult Intelligence Scale) and the computer-adaptive Armed Services Vocational Aptitude Battery. The unique variances of the SAT and ACT, obtained after removing g, were used to predict GPA. Results from both samples converged: While the SAT and ACT were highly g loaded, both tests generally predicted GPA after removing g. These results suggest that the SAT and ACT are strongly related to g, which is related to IQ and intelligence tests. They also suggest that the SAT and ACT predict GPA from non-g factors. Further research is needed to identify the non-g factors that contribute to the predictive validity of the SAT and ACT.
Bibliography Citation
Coyle, Thomas R. and David R. Pillow. "SAT and ACT Predict College GPA After Removing g." Intelligence 36,6 (November-December 2008): 719-729.
2. Coyle, Thomas R.
Pillow, David R.
Snyder, Anissa
Kochunov, Peter
Processing Speed Mediates the Development of General Intelligence (g) in Adolescence
Psychological Science 22,10 (October 2011): 1265-1269.
Also: http://pss.sagepub.com/content/22/10/1265.abstract
Cohort(s): NLSY97
Publisher: Sage Publications
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Cognitive Ability; g Factor; I.Q.; Intelligence; Modeling, Structural Equation; Test Scores/Test theory/IRT; Tests and Testing

Permission to reprint the abstract has not been received from the publisher.

In the research reported here, we examined whether processing speed mediates the development of general intelligence (g) in adolescence. Using the Armed Services Vocational Aptitude Battery, a battery of 12 diverse cognitive tests, we assessed processing speed and g in a large sample of 13- to 17-year-olds obtained from the National Longitudinal Survey of Youth (N = 6,969). The direct effect of age on g was small compared with the total effect of age on g, which was almost fully mediated through speed. The results suggest that increases in g in adolescence can be attributed to increases in mental speed.
Bibliography Citation
Coyle, Thomas R., David R. Pillow, Anissa Snyder and Peter Kochunov. "Processing Speed Mediates the Development of General Intelligence (g) in Adolescence ." Psychological Science 22,10 (October 2011): 1265-1269.
3. Coyle, Thomas R.
Snyder, Anissa
Pillow, David R.
Kochunov, Peter
SAT Predicts GPA Better for High Ability Subjects: Implications for Spearman's Law of Diminishing Returns
Personality and Individual Differences 50,4 (April 2011): 470-474.
Also: http://www.sciencedirect.com/science/article/pii/S0191886910005477
Cohort(s): NLSY97
Publisher: Elsevier
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Cognitive Ability; g Factor; Tests and Testing

This research examined the predictive validity of the SAT (formerly, the Scholastic Aptitude Test) for high and low ability groups. SAT scores and college GPAs were obtained from the 1997 National Longitudinal Survey of Youth. Subjects were classified as high or low ability by g factor scores from the Armed Services Vocational Aptitude Battery. SAT correlations with GPA were higher for high than low ability subjects. SAT g loadings (i.e., SAT correlations with g) were equivalent for both groups. This is the first study to show that the predictive validity of the SAT varies for ability groups that differ in g. The results contradict a presumption, based on Spearman's Law of Diminishing Returns, that a test's predictive validity should be lower for high ability subjects. Further research is needed to identify factors that contribute to the predictive validity of the SAT for groups that differing. [Copyright © Elsevier]

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Bibliography Citation
Coyle, Thomas R., Anissa Snyder, David R. Pillow and Peter Kochunov. "SAT Predicts GPA Better for High Ability Subjects: Implications for Spearman's Law of Diminishing Returns." Personality and Individual Differences 50,4 (April 2011): 470-474.