This five-volume set presents 593 alphabetically-arranged articles treating the history of the field; core aspects of behaviorism, cognitive psychology, and psychoanalytic psychology; diagnoses, disorders, treatments, tests; notable people; and important issues and popular concepts. About one-third of the essays were newly commissioned for this production or were substantially revised from their original publication (Magill's Encyclopedia of Social Science: Psychology 2003, and an earlier work published in 1993). Every entry (all are signed) begins with key concepts, follows a logical and somewhat standardized organization, and ends with sources for further study. A thematic index helps with access. The writing is clear and accessible to a broad audience of students (high school and above), professionals, and scholars needing a succinct treatment of a particular topic. Purchase of the printed set entitles a school or library access to the online content (for a limited time). Annotation ©2009 Book News, Inc., Portland, OR (booknews.com)