Emotion differentiation moderates the effects of rumination on depression: A longitudinal study.

Elevated trait rumination is associated with and predicts onset of major depressive disorder, but not all people with elevated trait rumination develop major depressive disorder. We hypothesize that certain emotional processes weaken the rumination-depression link, protecting against increases in depression. In this prospective longitudinal study, we examined one such process, emotion differentiation-the ability to discern specific emotions....