Jack William Henry Mattair, a psychoanalyst who formerly practiced in Manhattan and East Hampton, died in his sleep at home in East Hampton on Friday. He was 81. His family said the cause of death was not known.
A graduate of the University of Florida, Mr. Mattair earned a Master of Divinity degree from Emory University and a master’s degree in psychoanalysis from the Center for Modern Psychoanalytic Studies in Manhattan. He later became a faculty member there.