John C Defries Author & Editor

Valerie S. Knopik is Director of the Division of Behavioral Genetics at Rhode Island Hospital and Associate Professor in the Departments of Psychiatry & Human Behavior and Behavioral & Social Sciences at the Warren Alpert School of Medicine at Brown University, USA. 
Jenae M. Neiderhiser is Liberal Arts Research Professor of Psychology at The Pennsylvania State University, USA.
John C. DeFries is Professor of psychology and faculty fellow of the Institute for Behavioral Genetics, University of Colorado, Boulder, USA.