Sandra Pertot, Ph.D., is a clinical psychologist and sex therapist with over thirty years of experience who specializes in problems of libido, particularly as they relate to couples. She has worked in a variety of clinical settings and has her own private practice. She is the author of Perfectly Normal: Living and Loving with Low Libido and has written for many publications in the US and Australia, including Woman's Day and Penthouse. Pertot lives in New South Wales, Australia.