Social Identity Theory
Social Identity Theory (SIT) is a psychological framework developed by Henri Tajfel and John Turner in the 1970s to explain how individuals derive aspects of their self-concept from membership in social groups. The theory posits that people categorize themselves and others into groups based on characteristics such as ethnicity, nationality, profession, or shared interests. This cognitive process of social categorization influences behavior, attitudes, and intergroup relationships by establishing a distinction between the in-group and the out-group.
Core Processes
The theory outlines three fundamental processes: social categorization, social identification, and social comparison. Social categorization involves classifying oneself and others into distinct groups to simplify the social environment. Social identification occurs when individuals adopt the identity of the group they have categorized themselves into, internalizing its norms and values. Social comparison follows, where individuals evaluate their in-group against relevant out-groups to achieve or maintain positive self-esteem.
Implications for Intergroup Behavior
SIT suggests that the drive for positive distinctiveness leads to in-group favoritism and out-group discrimination. Individuals are motivated to enhance the status of their own group relative to others, which can result in prejudice and conflict even in the absence of direct competition for resources. The theory has been extensively applied to understand phenomena such as stereotyping, prejudice, and intergroup conflict, providing a foundation for contact hypothesis interventions aimed at reducing bias through positive intergroup interaction.