This authoritative and wide-ranging reference work has been thoroughly revised to include the latest definitions used in psychology, psychiatry, and related fields. It now features 17,000 entries along with sections that explore the latest developments in neuroscience and social psychology. A first rate reference book, "The Penguin Dictionary of Psychology" will continue to prove invaluable to students, professionals, and the interested general reader "By far the best reference work of its kind." (Paul Edwards, emeritus professor of philosophy, City University of New York).