Joseph Nicolosi, Ph.D. is a clinical psychologist, founder and director of the Thomas Aquinas Psychological Clinic, in Encino, California, and the President of the National Association for Research and Therapy of Homosexuality (NARTH). Since 1992, Nicolosi has studied and advocated reparative therapy, an umbrella term for techniques used to attempt to change people with same-sex sexual attraction to a heterosexual orientation. Nicolosi's Ph.D. is from the California School of Professional Psychology. Nicolosi and his wife Linda Ames Nicolosi have one son.