Social categorization is one of the most fundamental mechanisms identified in social psychology. When facing a person, rather than considering her or him in terms of her or his unique characteristics, we instead consider the person based on the social categories to which she or he belongs or, more precisely, to which we think he or she belongs. However, an important question remains largely unresolved: How does social categorization operate when multiple sources of social information, such as gender, ethnicity, age, occupation, etc. are simultaneously available?