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Family History as an Indictor of Risk for Reading Disability

George P. Vogler received his BA in Psychology from Rutgers University in 1978, and is currently a trainee in behavioral genetics at the Institute for Behavioral Genetics. University of Colorado, Boulder.

J. C. DeFries, PhD

J. C. DeFries received his graduate training in genetics at the University of Illinois. Urbana. He has been a researd: fellow in genetics. University of California. Berkeley a visiting professor of gerctics University of California. Berkeley, a visiting professor of genetics. University of Hawaii, and faculty fellow in the Institute of Psychiatry. University of London. He is currently Director of the Instiute for Behavioral Genetics and Professor of Behavioral Genetics and Psychology at the University of Colorado. Address: Dr. DeFries. Institute for Behavioral Genetics, Box 447, University of Colorado. Boulder. CO 80309.

Sadie N. Decker, PhD

Sadie N. Deckerreceived her PhD from the Department of Communication Disorders and Speech Science. University of Colorado. Boulder. She is currently a research associate at the Institute for Behavioral Genetics where she is conducting a three-year study of reading disability in twins.

Self-reported reading ability of the parents of 174 reading-disabled children and of 182 controls was used to estimate the posterior probability that a child will become reading disabled given that a parent is affected. Using Bayesian inverse probability analysis, it was found that the risk for reading disability is increased substantially (by a factor of from about 4 to over 13) if either parent has had difficulty in learning to read. The absolute risk appears to be sufficiently high to warrant clinical application of family history information as one component of a multifactorial risk assessment battery.

Journal of Learning Disabilities, Vol. 17, No. 10, 616-618 (1984)
DOI: 10.1177/002221948401701009


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