Are Outcome Fairness and Outcome Favorability Distinguishable Psychological Constructs? A Meta-Analytic Review

Manipulations of outcome favorability and outcome fairness are frequently treated as interchangeable, and assumed to have redundant effects. Perceptions of outcome fairness and outcome favorability are similarly presumed to have common antecedents and consequences. This research tested the empirical foundation of these assumptions by conducting a meta-analytic review of the justice literature (N = 89 studies). This review revealed that outcome fairness is empirically distinguishable from outcome favorability. Specifically: (a) there is weaker evidence of the fair process effect when the criterion is outcome fairness than when it is outcome favorability, (b) outcome fairness has stronger effects than outcome favorability, and equally strong or stronger effects as procedural fairness on a host of variables, such as job turnover and organizational commitment, and (c) manipulations of outcome fairness and favorability have stronger effects on perceptions of procedural fairness than the converse.