When revising a textbook, the authors always seek to build on the strengths of the prior editions and introduce new material reflecting developments in the field and changes in our larger society, while maintaining thorough coverage of the subject covered by the book. As in past editions, we seek to cover the full range of phenomena of interest to social psychologists. Not only do we address intrapsychic processes in detail, but we also cover social interaction and group processes of larger-scale phenomena, such as intergroup conflict and social movements. Our goal in writing this book is, as it has always been, to describe contemporary social psychology and to present the theoretical concepts and research findings that make up this broad and fascinating field. We have drawn on work by a wide array of social psychologists, including those with sociological and psychological perspectives, drawing on both classic works and more recent studies. Throughout the book we have used the results of empirical research—surveys, experiments, observational and qualitative studies, and meta-analyses—to illustrate this wide range of social psychological ideas.