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Behavior Genetics|November 1, 1979
Multivariate behavioral genetic analysis of twin data on scholastic abilitiesR Plomin, J C DeFriesActa Geneticae Medicae Et Gemellologiae|January 1, 1988
Multiple regression analysis of twin data: etiology of deviant scores versus individual differencesJ C DeFries, D W FulkerChild 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 DeFriesMultivariate Behavioral Research|January 31, 2016
MAXIMUM VARIANCE LINEAR COMBINATIONS FROM PHENOTYPIC, GENETIC, AND ENVIRONMENTAL COVARIANCE MATRICESJ P Hegmann, J C DeFriesJournal of Learning Disabilities|February 1, 1995
Comorbidity of reading and mathematics disabilities: genetic and environmental etiologiesJ G Light, J C DeFriesPageof 21