Does a common ingroup identity reduce intergroup threat?

Intergroup threat is regarded as a cause of negative outgroup attitudes; however, little research has attempted to examine ways of reducing intergroup threat. Two studies examine the effectiveness of a superordinate identity for reducing intergroup threat. It was predicted that when two groups were aware of a shared identity, intergroup threat would be lowered and attitudes would become more positive. In Study 1, perceptions of common identities among Black and White students were related to decreases in intergroup threat and increases in positive outgroup attitudes. In Study 2, when their shared identity as Americans was made salient, Democrats and Republicans experienced less threat and more positive outgroup attitudes compared to when political party identities alone were salient. In both studies, intergroup threat acted as a mediator of the relationship between common identity and outgroup attitudes, suggesting that a common identity increases positive outgroup attitudes by first reducing intergroup threat.