Affiliation:
1. Department of Psychology, University of Texas at San Antonio
2. Maryland Psychiatric Research Center, University of Maryland School of Medicine
Abstract
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.
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