John C. DeFries

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John C. DeFries
Born (1934-11-26) November 26, 1934 (age 82)
Illinois, U.S
Nationality American
Fields Psychology
Behavior Genetics
Institutions Institute for Behavioral Genetics
Alma mater University of Illinois
Doctoral students Joseph P. Hegmann, Linda K. Dixon, Thomas W. Klein, Allan R. Kuse, Benjamin Padeh, Frances I. Lewitter, Hsiu-Zu Ho, Laura A. Baker, George P. Vogler, Treva K. Rice, Michele C. LaBuda, Jacquelyn Gillis Light, Sally J. Wadsworth, Maricela Alarcon, Valerie S. Knopik, Chayna J. Davis, Jesse L. Hawke,

John C. DeFries (born November 26, 1934) is one of the world's leading behavior geneticists. His achievements include being President of the Behavior Genetics Association (1982–1983) and cofounder of the journal Behavior Genetics, as well as its co-editor (1970–1978). His awards include The Dobzhansky Award for Outstanding Research in Behavior Genetics (Behavior Genetics Association, 1992), Consulting Editor of the Journal of Learning Disabilities (1987–2002), Fellowships in the International Academy for Research in Learning Disabilities, Association for Psychological Science, and the American Association for the Advancement of Science, Section J (Psychology).

His contributions include major twin and adoption studies of cognitive abilities, genetics of learning disabilities, and, when molecular tools became available, pioneering the use of DNA markers to locate genes that influence behavioral characters.

At the Institute for Behavioral Genetics at the University of Colorado Boulder Dr. DeFries established the world's first large twin study of dyslexia[1] at the Institute for Behavior Genetics in Boulder, and supervised over 17 PhD students.

Among his works are a standard text on behavior genetics and original work on behavior-genetic methodology, some of it in collaboration with David Fulker.[2]

DeFries' articles have been cited over 29,000 times and he has an h-index of 87.[3]

Selected books[edit]


  1. ^ Wadsworth SJ, DeFries JC, Olson RK, Willcutt EG (2007) Colorado longitudinal twin study of reading disability. Annals of Dyslexia, 57(2), 139-60.
  2. ^ Alarcon, M., Plomin, R., Fulker, D.W., Corley, R. & DeFries, J.C. (1998). Multivariate path analysis of specific cognitive abilities: data at 12 years of age in the Colorado Adoption Project. Behavior Genetics 28:255-264.
  3. ^ "John DeFries - Google Scholar Citations". Retrieved 2016-08-15. 

External links[edit]