What is it?
Hogg (2006) social identity theory is a social psychological analysis of the role of self-conception in group membership, group processes, and intergroup relations. It embraces a number of interrelated concepts and subtheories that focus on social-cognitive, motivational, social-interactive and macrosocial facets of group life. The approach is explicitly framed by a conviction that collective phenomena cannot be adequately explained in terms of isolated individual processes of interpersonal interaction alone and that social psychology should place large-scale social phenomena near the top of its scientific agenda.