Pre-sleep arousal and poor sleep quality link experiential avoidance to depressive symptoms in young adults

Higher levels of experiential avoidance are associated with increased risk for depression. Here, we examined the mediating roles of pre-sleep arousal and sleep quality in the relationship between experiential avoidance and depressive symptoms. Undergraduate students (N = 173) completed self-reports of experiential avoidance, pre-sleep arousal, habitual sleep quality, and depressive symptoms. The indirect effect of experiential avoidance on depressive symptoms through pre-sleep arousal and sleep quality was examined in a set of serial mediation analyses. Effect estimates supported a pathway in which higher experiential avoidance was associated with heightened pre-sleep arousal, and heightened pre-sleep arousal was associated with poor sleep quality. Poor sleep quality, in turn, was associated with increased depressive symptoms. Follow-up analyses showed that the indirect path was driven by cognitive, rather than somatic, arousal. Future research assessing the role of pre-sleep cognitive arousal in the relationship between experiential avoidance and mood disruption using longitudinal design is warranted.