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Child Development|April 1, 1983
Parental contributions to longitudinal stability of cognitive measures in the Colorado Family Reading StudyJ C DeFries, L A BakerTwin Research : the Official Journal of the International Society for Twin Studies|November 11, 1999
Etiology of covariation between reading and mathematics performance: a twin studyV S Knopik, J C DeFriesDevelopmental Medicine and Child Neurology|April 1, 1981
Cognitive ability profiles in families of reading-disabled childrenS N Decker, J C DeFriesMultivariate Behavioral Research|January 30, 2016
Factor Analysis Of Genetic And Environmental Correlation MatricesC B Crawford, J C DeFriesJournal of Learning Disabilities|February 1, 1995
Comorbidity of reading and mathematics disabilities: genetic and environmental etiologiesJ G Light, J C DeFriesAnnals of Dyslexia|November 16, 2013
Genetic and environmental etiologies of reading disability: A twin studyM C Labuda, J C DefriesBehavior Genetics|October 23, 1997
Comorbidity of mathematics and reading deficits: evidence for a genetic etiologyV S Knopik, M Alarcón, J C DeFriesScience (New York, N.Y.)|April 22, 1977
Assortative mating by unwed biological parents of adopted childrenR Plomin, J C DeFries, M K RobertsBehavior Genetics|January 1, 1995
Etiology of individual differences in reading performance: a test of sex limitationM Alarcón, J C DeFries, D W FulkerNature|December 22, 1988
Genetic influence on general mental ability increases between infancy and middle childhoodD W Fulker, J C DeFries, R PlominPageof 10