The field of cognitive psychology has seen several contributions since 1950, including those by Jean Piaget, Noam Chomsky, and Leon Festinger. Cognitivists are interested in how information is processed, stored, retrieved, and used, as well as how this affects human cognition, language, problem-solving, and creativity. They contend that behavior is not just a reaction to signals, but is influenced by a variety of mental processes, including perceptions, memories, and expectations.
