experiments on perception, Bruner turned his attention to the actual cognitions that he had indirectly studied in his perception studies.

In 1956, Bruner published the book A Study of Thinking, which formally initiated the study of cognitive psychology. Soon afterward Bruner helped found the Harvard Center of Cognitive Studies. After a time, Bruner began to research other topics in psychology, but in 1990 he returned to the subject and gave a series of lectures, later compiled into the book Acts of Meaning. In these lectures, Bruner contested