The APA Dictionary of Psychology by Gary R. Vandenbos

The largest association of psychologists in the world - the American Psychological Association - presents the definitive information on the language of the field, including: 25,000 entries offering clear and authoritative definitions; balanced coverage of over 90 subareas across the field of psychology - including clinical, experimental, neuropsychology, cognitive, personality and social, developmental, health, psychopharmacology, methodology and statistics, and many others; thousands of cross-references that deepen the user's understanding of related topics; close to 200 concise entries on major figures in the history of psychology and central organizations, institutions, and associations; a Guide to the Dictionary and Quick Guide to Format that explain stylistic and format features; and 4 appendixes on entries from these categories: biographies; institutions, organizations, and associations; psychological tests and assessment instruments; and psychotherapies and psychotherapeutic approaches.