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Individual-based and group-based forms of relative deprivation (IRD and GRD, respectively) are linked with individual- and group-based responses to inequality, respectively. System justification theory, however, argues that we are motivated to believe that people's outcomes are equitably determined. As such, endorsement of system-justifying beliefs should dampen people's reactions to outcomes perceived to be unequal and ultimately undermine support for political mobilization. We examined these hypotheses in a national probability sample of New Zealanders (N = 6,886). As expected, IRD predicted individual-based responses to inequality (i.e., satisfaction with one's standard of living and psychological distress) better than GRD. Conversely, GRD predicted group-based responses to inequality (i.e., perceived discrimination against one's group and support for political mobilization) better than IRD. Each of these relationships was, however, notably weaker among participants who were high, relative to low, on system justification. These results demonstrate that system-justifying beliefs have a palliative effect on people's experiences with inequality.
Osborne et al. (Wed,) studied this question.