Nancy Gambescia, Ph. D., teaches and supervises psychotherapists in the assessment and treatment of sexual dysfunctions and couples therapy. Gambescia is an Approved Supervisor and a Clinical Member of the American Association of Marriage and Family Therapy, as well as certified by the American Board of Sexology. She maintains a private practice specializing in relationship and sex therapy in Rosemont, ... Read morePennsylvania. She is coauthor of Erectile Dysfunction (Norton) and Hypoactive Sexual Desire (Norton). Robert E. Jenkins, M.A., also a member of AAMFT, received his Master's Degree in Counseling from the University of Nevada, Las Vegas. He is a practicing psychotherapist in the Las Vegas area. Gerald R. Weeks, Ph. D., ABPP, is Professor and Chair of the Department of Counseling at the University of Las Vegas, Nevada. Weeks is an Approved Supervisor and a Clinical Member of the American Association of Marriage and Family Therapy, as well as certified by the American Board of Sexology. He has currently completed his 16th professional textbook having published in the fields of sex, marital, and family therapy. He is coauthor of Erectile Dysfunction (Norton) and Hypoactive Sexual Desire (Norton). Show Less