Recategorizing at broader levels can reduce intergroup prejudice.

Evidence

Because categorization is the basis of prejudice, Allport argued that changing the way people conceived of category memberships held great promise for reducing prejudice. In particular, he proposed that shifting the focus from membership at a more differentiated level, such as racial groups, to a more inclusive level, such as national or human identity, could undermine the type of categorization that leads to prejudice between racial or ethnic groups. — , Rudman, Laurie A - On the Nature of…, 537

Categorization

Category: Causal Relationships