People hold stereotypes of groups they have never encountered

Evidence

By expanding the concept of ego-justification from protection of the self to include protection of the extended self, Tajfel’s group-justification view overcomes several difficulties faced by Lippmann, Katz, Allport, and others. For instance, an individual may subscribe to certain stereotypes not necessarily to justify some personal conduct or social position, but as a way of defending the actions of others with whom he or she shares a social identification. Thus, people could possess stereotypes of groups whom they as individuals had never encountered, but whom other members of their group had encountered (cf. Gergen, 1969). — John T. Jost and Jim Sidanius, Political Psychology, 2891

Categorization

• corroborated: 2 independent passages support this claim — John T. Jost and Jim Sidanius, Political Psychology, 2891