Social Dominance Orientation
Social dominance orientation (SDO) is an individual's preference for group-based inequality and dominance versus equality and inclusion. SDO has multiple origins, including status, gender, socialization, and temperament and personality. SDO is a strong predictor of intergroup ideologies and behaviors, making it indispensable for studying intergroup relations.
International Encyclopedia of the Social & Behavioral Sciences: Second Edition
Stewart, Andrew L. and Pratto, Felicia, "Social Dominance Orientation" (2015). Psychology. 618.