William A. McClelland, 60, president of the Human Resources Organization (HumRRO) in Alexandria, died Friday at Fairfax Hospital, where he had undergone surgery for a heart ailment on March 14.

HumRRO, a private research contractor specializing in behavioral science research for the military, was established by the Army in 1951 and was a subsidiary of George Washington University before becoming an independent corporation in 1969.

A psychologist, Dr. McClelland joined HumRRO in 1955 as director of the training methods division. He became executive vice president of the corporation in 1969 and was named president in 1976.

From 1951 to 1955, he was a supervisory experimental and physiological psychologist with the Air Force.

Dr. McClelland was born in New York City and grew up in White Plains, N.Y. A Francis Wayland scholar at Brown University, he was elected to Phi Beta Kappa, and earned a bachelor's degree with high honors in psychology in 1941.

He enlisted in the Army Air Corps in 1942, and was a captain in the aviation psychology program during World War II.

He earned a master's degree in psychology in 1946 and a doctorate in psychology in 1948 from the University of Minnesota. He later was an assistant professor of psychology and assistant to the dean at Brown University.

He was president of the D.C. Psychological Association and president of the division of military psychology of the American Psychological Association.

Dr. McClelland lived in Alexandria and was a past president of the Hollin Hall PTA. He was active in Mount Vernon Unitarian Church in Alexandria and in other church work and was a member of the Cosmos Club of Washington.

Survivors include his wife, Dorothy Ann, and a son, Richard B., of the home; a daughter, Kathrine E., a student at Harvard University, and his mother, Charlotte McClelland, of White Plains, N.Y.

The family suggests that expressions of sympathy be in the form of contributions to the Memorial Fund, Mount Vernon Unitarian Church, Alexandria.