Andrew Mattison

Andrew Michael Mattison (August 5, 1948–December 29, 2005) was a medical psychologist and researcher. He performed influential research in both clinical and social aspects of sexology, as well as drug use. He spent the majority of his career as a professor, practicing psychotherapist, and research scientist at the University of California, San Diego. Mattison received his Ph.D. from United States International University (now Alliant International University) in 1975, with the dissertation Onset of Erectile Dysfunction in Diabetic Males. His best-known book was The Male Couple: How Relationships Develop, coauthored with his partner David McWhirter. The book argued that gay male relationships have particular tendencies distinct from...