problem solving, process involved in finding a solution to a problem. Many animals routinely solve problems of locomotion, food finding, and shelter through trial and error. Some higher animals, such as apes and cetaceans, have demonstrated more complex problem-solving abilities, including discrimination of abstract stimuli, rule learning, and application of language or languagelike operations. Humans use not only trial and error but also insight based on an understanding of principles, inductive and deductive reasoning, and critical or creative thinking. Problem-solving abilities and styles may vary considerably by individual.

The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Jeannette L. Nolen.

cognitive psychology, Branch of psychology devoted to the study of human cognition, particularly as it affects learning and behaviour. The field grew out of advances in Gestalt, developmental, and comparative psychology and in computer science, particularly information-processing research. Cognitive psychology shares many research interests with cognitive science, and some experts classify it as a branch of the latter. Contemporary cognitive theory has followed one of two broad approaches: the developmental approach, derived from the work of Jean Piaget and concerned with “representational thought” and the construction of mental models (“schemas”) of the world, and the information-processing approach, which views the human mind as analogous to a sophisticated computer system.

This article was most recently revised and updated by Jeannette L. Nolen.