1. 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
2. J. C. DeFries received his graduate training in genetics at the University of Illinois, Urbana. He has been a research fellow in genetics. 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 Institute for Behavioral Genetics and Professor of Behavioral Genetics and Psychology at the University of Colorado.
3. Sadie N. Decker received 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. Address: Dr. DeFries, Institute for Behavioral Genetics, Box 447, University of Colorado, Boulder, CO 80309.