John Anderson, 59, a psychologist who specialized in AIDS- related matters for the American Psychological Association, died of colon cancer Sept. 17 at his home on Capitol Hill. His death was confirmed by his wife, Claudia Menashe.

Dr. Anderson was senior director of the APA’s office on AIDS from 1994 until he retired on disability this year. He also had a clinical private practice in psychology specializing in mental health aspects of AIDS, cancer and end-of-life concerns.

John Richard Anderson was born in Barnesville, Ohio. He graduated from Southern Methodist University in Dallas in 1975 and received a master’s degree in clinical psychology from Stephen F. Austin State University in Nac­ogdoches, Tex., in 1980. In 1988, he received a doctorate in clinical psychology from the University of Kansas.

Dr. Anderson settled in the Washington area in 1985. Since 1988, he held various positions with the American Psychological Association, including director of the HIV Office for Psychology Education and director of the AIDS Community Training Act.

He volunteered with Kim’s Garden, a Capitol Hill neighborhood cleanup project.

His first marriage, to Elizabeth Sherman Anderson, ended in divorce.

Survivors include his wife of 15 years, Claudia Menashe, and their two children, Leah Anderson and Ben Anderson, all of Washington; a daughter from his first marriage, Erika Anderson of Washington; and two sisters, Jacquie McAllister of Mashpee, Mass., and Vicki Kirkbride of Arlington.

— Bart Barnes