Leading theoreticians and researchers present current thinking about the role played by group memberships in people's sense of who they are and what they are worth. The chapters build on the assumption, developed out of social identity theory, that people create a social self that both defines them and shapes their attitudes and behaviors. The authors address new developments in the theoretical frameworks through which we understand the social self, recent research on the nature of the social self, and recent findings about the influence of social context upon the development and maintenance of the social self.

Now in a revised and expanded fourth edition, this definitive reference and text has more than 50% new material, reflecting a decade of theoretical and empirical advances. Prominent researchers describe major theories and review cutting-edge findings. The volume explores how personality emerges from and interacts with biological, developmental, cognitive, affective, and social processes, and the implications for well-being and health. Innovative research programs and methods are presented throughout. The concluding section showcases emerging issues and new directions in the field. New to This Edition *Expanded coverage of personality development, with chapters on the overall life course, middle childhood, adolescence, and early adulthood. *Three new chapters on affective processes, plus chapters on neurobiology, achievement motivation, cognitive approaches, narcissism, and other new topics. *Section on cutting-edge issues: personality interventions, personality manifestations in everyday life, geographical variation in personality, self-knowledge, and the links between personality and economics. *Added breadth and accessibility--42 more concise chapters, compared to 32 in the prior edition.

Now in a revised and expanded fourth edition, this definitive reference and text has more than 50% new material, reflecting a decade of theoretical and empirical advances. Prominent researchers describe major theories and review cutting-edge findings. The volume explores how personality emerges from and interacts with biological, developmental, cognitive, affective, and social processes, and the implications for well-being and health. Innovative research programs and methods are presented throughout. The concluding section showcases emerging issues and new directions in the field. New to This Edition *Expanded coverage of personality development, with chapters on the overall life course, middle childhood, adolescence, and early adulthood. *Three new chapters on affective processes, plus chapters on neurobiology, achievement motivation, cognitive approaches, narcissism, and other new topics. *Section on cutting-edge issues: personality interventions, personality manifestations in everyday life, geographical variation in personality, self-knowledge, and the links between personality and economics. *Added breadth and accessibility--42 more concise chapters, compared to 32 in the prior edition.