 Dr. Crews received a Ph.D. in Psychobiology as a National Institute of Mental Health Predoctoral Trainee at the Institute of Animal Behavior at Rutgers University in 1973 under the mentorship of Daniel S. Lehrman and Jay S. Rosenblatt.He completed a National Science Foundation Postdoctoral Fellowship mentored by Paul Licht at the Department of Integrative Biology at the University of California, Berkeley until 1975.This was followed by a NIMH Postdoctoral Fellowship with Ernest E. Williams at Harvard University.