DAVID WOHLSIFER, Ph.D., LCSW,  has experience in individual, couple, family, and group psychotherapy. After graduating from the University of Pennsylvania, he completed a postgraduate specialty certification program in Cognitive Behavioral Therapy at the University of Pennsylvania’s Center for Cognitive Therapy. He also has advanced training as a sex therapist. His areas of expertise include sexual issues, sexual dysfunction, anxiety and mood disorders, family therapy, trauma, substance abuse, and internet and pornography addictions. Dr. Wohlsifer also has worked extensively treating sleep disorders using cognitive therapy. He is on the faculty at the Bryn Mawr College Graduate School of Social Work and Social Research, the University of Pennsylvania's School of Social Policy and Practice, and teaches Couples and Family Therapy at the University of Pennsylvania's School of Medicine, Psychiatry Residency. Dr. Wohlsifer chairs the Jewish Family Interest Group for the American Family Therapy Academy, is an associate editor for the family therapy journal Family Process.