Textbook of AI

1948–, Cognitive scientist

Also known as: James L. McClelland, Jay McClelland

James Lloyd McClelland is an American cognitive scientist who, with David Rumelhart, edited the 1986 Parallel Distributed Processing volumes that founded modern connectionism in psychology. McClelland's interactive-activation model of word and letter perception (with Rumelhart, 1981) was an early demonstration that distributed neural-network models could reproduce classical psychological phenomena, context effects, masking effects, lexical decision, that were difficult to account for in symbolic models.

McClelland has spent his career producing connectionist models of cognitive phenomena across language acquisition, memory, executive control and reasoning. His "complementary learning systems" framework (McClelland, McNaughton and O'Reilly, 1995) proposed that the hippocampus and neocortex implement two complementary memory systems with different learning regimes, a framework that has shaped both cognitive neuroscience and the design of memory mechanisms in modern AI agents. He is currently a professor of psychology at Stanford.