This authoritative, state of the art overview of the field of intergroup processes is divided into nine major sections on cognition, motivation, emotion, communication and social influence, changing intergroup relations, social comparison, self-identity, methods, and applications. Includes 25 specially commissioned chapters offer unparalleled coverage of the whole field of intergroup processes. A carefully chose team of authors from around the world ensures a truly international perspective. Fully referenced chapters include bibliographies for easy access to further study. This handbook is essential reading for upper-level students looking for succinct overviews and for researchers seeking an authoritative definition of the field, which also indicates likely future trends.