This Dictionary give the definitions of more than 8,000 authoritative and up-to-date entries, this best-selling dictionary covers all branches of psychology. The coverage ranges alphabetically from ABA Design to Zygote and includes most of the important terms used in its allied subjects? psychoanalysis, psychiatry, criminology, neuroscience, and statistics. It features comprehensive coverage of key areas, for example: cognition, sensation and perception, emotion and motivation, learning and skills, language, mental disorder, and research methods. Entries provide clear and concise definitions, word origins and derivations, and are extensively cross-referenced for ease of use.