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Although experiencing unfairness is a primary source of stress, there are surprisingly few studies that have examined the physiological underpinnings of unfairness. Drawing from social self-preservation theory, we derive predictions regarding the effects of interactional unfairness on activity in the hypothalamic-pituitary-adrenocortical (HPA) axis, which is one of the body�s primary hormonal systems for responding to stress. Using an experimental design with objective physiological measures, we found support for our hypothesis that interactional unfairness triggers the release of cortisol by the HPA axis. This cortisol activity in turn mediated the effects of interactional unfairness on deviant behavior. This indirect effect remained significant after controlling for established attitudinal and self-construal mediators of the justice�deviance relationship. We discuss the theoretical and practical implications of these findings for the occupational stress and organizational justice literatures. (PsycINFO Database Record (c) 2014 APA, all rights reserved)
