social identity theory

Social Identity Theory

An individual’s sense of self is shaped by group memberships, such as social class, family, sports teams, national identity 

  • Individuals want to enhance self-esteem by enhancing the status of the groups they belong to 


  1. Social categorization: individuals classify each other into groups based on shared characteristics 

  • Recognition of visible/inferred characteristics that can define groups 

  • Attribution of characteristics: after group defined, individuals attribute certain characteristics to a group 

    • Leads to stereotyping 

  • Emotional valence attachment: individuals attach emotional significance to the groups they categorize themselves into 

    • Ingroup bias: favoring one's own group

    • Outgroup aversion: negative emotions toward competing groups 


  1. Social Identification: individuals assimilate the identity of a group into their own self-concept. 

  • Emotional attachment: developing emotional connection to a group, when status begins to impact the individual’s own feelings of self worth

    • Ex. My sports team lost, so I lost. Because your identity is now attached to the sports team

  • Group Conformity: adhering to the group’s norms and behaviors, which may involve changing one’s previous habits and adopting new practices as dictated by the group’s standards

  • Defense and advocacy: defending the group against criticism and advocating for its interests and values, both within and outside the organizational context 

  • Internalization: when a group’s identity becomes integrated with one’s personal identity 


  1. Social comparison: when individuals assess their own group’s status relative to other groups 

  • Selection of comparison groups: individuals select outgroups to compare their ingroups with 

  • Identify dimensions or attributes to compare 

  1. Behavioral Responses 

  • Outgroup discrimination: negative attitudes, behaviors, or actions toward outgorup members 

  • When part of a weak ingroup, you are more likely to be open to leaving it and joining higher-status group 





Behavioral responses 

  • Ingroup favoritism: you are most likely to be more philanthropic and altruistic to ingroup members. You are more accepting and open to people in your ingroup, and you see them as more multifaceted 

  • Outgroup discrimination: occurs when negative attitudes, behaviors, or actions are directed toward members of outgroups. This is a defense mechanism 

  • Permeability of group boundaries: perceived ease with which individuals can leave their current group and then join another potentially higher status group

  • Behavioral responses