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Wadsworth, Sally J.; Olson, Richard K.; Pennington, Bruce F.; DeFries, John C. – Journal of Learning Disabilities, 2000
Composite reading performance data from 223 pairs of identical twins and 169 same-gender fraternal twins in which at least one member was classified with reading disability were subjected to multiple regression analysis. Results indicated that the genetic etiology of reading disability differs as a linear function of IQ. (Contains extensive…
Descriptors: Biological Influences, Children, Disability Identification, Environmental Influences
Ellison, Robert L.; And Others – 1970
The identification of talent, and the understanding of its development and origins in terms of biographical data were investigated. The three central objectives were: to construct separate empirical procedures for Anglos and Blacks to predict certain academic performance criteria; to construct an empirical scoring procedure that could predict…
Descriptors: Academic Achievement, Black Students, College Admission, Comparative Analysis