A handbook of accessible and authoritative explanations of the terms and concepts in use in the field of psychology. Psychology draws on a range of disciplines from medicine to the social sciences, and its terminology can be confusing for those encountering the subject for the first time. This dictionary uses clear, unambiguous language and examples to introduce basic concepts used in psychology courses. This third edition has been updated and new material added, particularly in the field of health psychology, neuroscience and social and developmental psychology. It also includes vignettes of the most important and famous psychologists, and is aimed at undergraduate and A-level students of psychology.