Provides a comprehensive five-volume set that covers notable theories, people, social issues, life stages, the physiology and anatomy of the nervous system, and various mental illnesses or conditions, all in a simple, easy to use A-Z format. This newly updated set covers not only the history of the field and the core aspects of behaviorism, cognitive psychology, and psychoanalytic psychology but also diagnoses, disorders, treatments, tests, notable people, and issues, including many popular concepts. Essays address how culture, ethnicity, and gender affect psychological theory and beliefs. They cover topics such as multicultural psychology and the effect of culture on diagnosis, and other important and developing issues in psychology.