The study of the interplay between the individual self and collective selves is an arena of rich theory and research in social psychology. Self and Social Identity is a collection of readings from the four-volume set of Blackwell Handbooks of Social Psychology that examine how group memberships shape the content of the individual's self concept and how the sense of self is expanded as a consequence of identification with other individuals and the group as a whole. The readings have been selected to provide a representative sampling of exciting research and theory on self and identity that is both comprehensive and current and cross-cuts the levels of analysis from intrapersonal to intergroup. The book is organized around two broad themes: "self and identity," exploring the self as a product of interpersonal and group processes; and "group identities," illustrating some of the phenomena associated with representing a group or social category as a collective.