Ulric Neisser, a psychological researcher who helped lead a postwar revolution in the study of the human mind by advancing the understanding of mental processes like perception and memory, died on Feb. 17 in Ithaca, N.Y. He was 83.
The cause was complications of Parkinson’s disease, his son Mark said.
Advances in information theory, computers and experimental methods after World War II enabled scientists to challenge the dominant psychological discipline, behaviorism. Behaviorism examines stimuli to the senses and the resulting responses. In its purest permutation, it rejects the idea that the mind even exists.