Right-wing authoritarianism and social dominance orientation and the dimensions of generalized prejudice: A longitudinal test

A Dual Process Model (DPM) approach to prejudice proposes that there should be at least two dimensions of generalized prejudice relating to outgroup stratification and social perception, which should be differentially predicted by Right-Wing Authoritarianism (RWA) and Social Dominance Orientation (SDO). The current study assessed the causal effects of SDO and RWA on three dimensions of prejudice using a full cross-lagged longitudinal sample (N=127). As expected, RWA, but not SDO, predicted prejudice towards 'dangerous' groups, SDO, but not RWA, predicted prejudice towards 'derogated' groups, and both RWA and SDO predicted prejudice towards 'dissident' groups. Results support previously untested causal predictions derived from the DPM and indicate that different forms of prejudice result from different SDO-and RWA-based motivational processes. © 2009 John Wiley & Sons, Ltd.