Conformity is a type of social influence involving a change in belief or behavior in order to fit in with a group.| Simply Psychology
Social Identity Theory, proposed by Henri Tajfel and John Turner in the 1970s, posits that individuals derive a portion of their self-concept from their membership in social groups. The theory seeks to explain the cognitive processes and social conditions underlying intergroup behaviors, especially those related to prejudice, bias, and discrimination.| Simply Psychology