Cyril R. Mill, 92, a retired psychologist and management consultant, died April 13 at the Tall Oaks assisted-living facility in Reston, where he had lived for the past four years.

He had dementia, hypertension and anemia. A friend, Graceanne Barbour, confirmed his death.

Dr. Mill specialized in the training of business, government and nonprofit organization supervisors and executives in management skills and techniques. He came to Washington in 1965 and for 13 years was director for consultation at the National Training Laboratories, a nongovernmental organization based in the Washington area. His work included developing contracts for training and consultation with government agencies, churches, school systems and companies.

He retired from NTL in 1978 but then operated his own management consulting and advisory business, Behavioral Science Associates, based in Vienna, until 1995.

Over the years he did consulting and advising overseas, including programs in Singapore, South Korea, Mexico, Belgium, Switzerland and Japan.

Cyril Ralph Mill was born in Benson, Minn., grew up in Nebraska, and graduated from Michigan’s Wayne State Teachers College in 1941. He served in the Army Air Forces during World War II. He received a doctorate in psychology from Michigan State University in 1953.

In the 1950s, he was based in Richmond as director of psychological services in Virginia’s mental health agency.

His publications included the 1980 book “Activities for Trainers: 50 Useful Designs.”

His wife of 66 years, Dorothy Morgan Mill, died in 2008.

Survivors include a brother.

— Bart Barnes