Social enterprise
Social enterprise research conducted on behalf of the Columbia Business School (2005–2007) showed that regional differences within the United States in how interracial relationships are perceived have persisted: Daters of both sexes from south of the Mason–Dixon line were found to have much stronger same-race preferences than northern daters did. The study also observed a clear gender divide in racial preference with regards to marriage: Women of all the races which were studied revealed a strong preference for men of their own race for marriage, with the caveat that East Asian women only discriminated against Black and Hispanic men, and not against White men. A woman's race was found to have no effect on the men's choices.