David Pelcovitz, Ph.D. holds the Gwendolyn and Joseph Straus Chair in Psychology and Education at Yeshiva University 's Azrieli Graduate School . Before assuming his position on the faculty of Yeshiva University , Dr. Pelcovitz was a clinical professor of psychology and psychiatry at New York University School of Medicine. He has published and lectured extensively on a variety of topics related to the psychological impact of trauma and loss, child and adolescent behavior problems, parenting, and the impact of divorce and stress on children.