? Social identity theory defines a group as a collection of people who categorize themselves as belonging to the same social category and internalize that category's identity-defining attributes to define and / or evaluate themselves. The theory was proposed by social psychologists Henri Tajfel and John Turner in the 1970s and the 1980s.

Social identity refers to the ways that people's self-concepts are based on their membership in social groups. 

Maebe A. Girl joins for the first segment of the show