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| Journal of Research and… | 1 |
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| Jarjoura, David | 1 |
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Peer reviewedPage, Ellis B.; Jarjoura, David – Journal of Research and Development in Education, 1979
A computer scan of ACT Assessment records identified 3,427 sets of twins. The Hardy-Weinberg rule was used to estimate the proportion of monozygotic twins in the sample. Matrices of genetic and environmental influences were produced. The heaviest loadings were clearly in the genetic matrix. (SJL)
Descriptors: Academic Achievement, Achievement Tests, College Bound Students, Factor Analysis
