Kathryn S. K. Hall, PhD, is a licensed psychologist with over four decades of experience in sex therapy. She has co-edited three influential books, including two editions of Principles and Practice of Sex Therapy and The Cultural Context of Sexual Pleasure and Problems: Psychotherapy with Diverse Clients. Dr. Hall has lectured widely and written extensively about human sexuality and has provided training in sex therapy to graduate students and professionals. She is the book review editor for the Journal of Sex and Marital Therapy and is a past president of the Society for Sex Therapy and Research. Visit drkathrynhall.com.