What do psychologists call the tendency to perceive members of an outgroup as less variable,or more similar to one another,than members of the ingroup?

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The outgroup homogeneity effect is the tendency for people to perceive members of an outgroup as more similar to each other than members of their own ingroup. This occurs because people have limited information about members of an outgroup and tend to generalize based on limited information, leading to oversimplified perceptions of the outgroup.

What Do Psychologists Call the Tendency to Perceive Members of an Outgroup