From amnesia to Freudian, aggression to the unconscious, this new work is an authoritative and accessible reference work and guide to psychology. Ideal for students of psychology and professional psychologists, as well as the general reader, it contains over 9,000 main entries and provides clear and concise definitions of a wide range of terms and concepts in psychology, psychiatry, and psychoanalysis. Topics include: Biological aspects of psychology and psychiatry, Sensation and perception, Cognition, Learning and skills, Emotion and motivation, Individual differences and personality, Developmental psychology, Social psychology, Mental disorders, Research methods and statistics, Psychoanalysis, Phobias, and phobic stimuli, Abbreviations and symbols; 79 line drawings; List of principal sources