When does procedural justice influence perceived legitimacy? The role of standing uncertainty and group identification

Abstract

Many empirical studies have shown that procedural justice is the key determinant of whether an individual perceives an authority figure as legitimate. However, based on relational models of procedural justice and the uncertainty management model, there is reason to believe that the association between procedural justice and perceived legitimacy may be stronger for individuals who are uncertain about their standing as group members (moderation); this interaction might predict group identification and, in turn, perceived legitimacy (mediation). We tested this mediated moderation model in two experiments (Studies 1a and 1b) and a field study (Study 2) using different operationalizations of standing uncertainty across studies. The results of Studies 1a and 1b demonstrated that the association between procedural justice and perceived legitimacy was stronger for participants with high (vs. low) standing uncertainty. Study 2 showed that group identification mediated the association between this interaction effect and perceived legitimacy. Together, the results of the mediated moderation analysis showed that procedural justice was positively associated with perceived legitimacy through high group identification when standing uncertainty was high. The theoretical contributions and practical implications of our findings are discussed.