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Social dominance orientation (SDO) has been reported to be strongly related to a multitude of intergroup phenomena, but little is known about situational experiences that may influence SDO. Drawing from research on intergroup contact theory, we argue that positive intergroup contact is able to reduce SDO-levels. The results of an intergroup contact intervention study among high school students (Study 1, N = 71) demonstrated that SDO levels were indeed attenuated after the intervention. Furthermore, this intervention effect on SDO was especially pronounced among students reporting a higher quality of contact. A cross-lagged longitudinal survey among adults (Study 2, N = 363) extended these findings by demonstrating that positive intergroup contact is able to decrease SDO over time. Moreover, we did not obtain evidence for the idea that people high in SDO would engage less in intergroup contact. These findings indicate that intergroup contact erodes one of the important socio-ideological bases of generalized prejudice and discrimination. [ABSTRACT FROM AUTHOR]

The authors used multilevel modeling to examine whether peer group ideological beliefs (n = 109 friendship groups) predicted the homophobic and racist attitudes of other individuals within the group (n = 395 college students). Results indicated that the social dominance orientation (SDO), right-wing authoritarianism (RWA), and universal-diverse orientation (UDO) ideological beliefs of peers predicted the prejudiced attitudes of other group members, over and above individuals' own ideological views. Additionally, the strength with which individuals' own ideological beliefs predicted their prejudiced attitudes varied systematically across peer groups. Affiliations with high-RWA peers strengthened the extent to which individuals' own SDO and RWA predicted their prejudiced attitudes. Results suggest the ideological beliefs of peers are relevant to predicting the prejudiced attitudes of the individuals with whom they affiliate. Although specific peer ideologies differentially predicted forms of prejudice, the overall contribution of these peer ideology beliefs to the prediction of individuals' prejudiced attitudes was comparable for both homophobic and racist attitudes. Attention to proximal social networks and the social dynamics within these networks can contribute to better explanations of individual differences in prejudiced attitudes. [ABSTRACT FROM AUTHOR]