Emotion regulation and biological stress responding: associations with worry, rumination, and reappraisal.

Individual differences in the habitual use of emotion regulation strategies may play a critical role in understanding psychological and biological stress reactivity and recovery in depression and anxiety. This study investigated the relation between the habitual use of different emotion regulation strategies and cortisol reactivity and recovery in healthy control individuals (CTL; n = 33) and in individuals diagnosed with social anxiety disorder (SAD; n = 41). The tendency to worry was associated with increased cortisol reactivity to a stressor across the full sample. Rumination was not associated with cortisol reactivity, despite its oft-reported similarities to worry. Worry and rumination, however, were associated with increased cortisol during recovery from the stressor. The only difference between CTL and SAD participants was observed for reappraisal. In the CTL but not in the SAD group, reappraisal predicted recovery, such that an increased tendency to reappraise was associated with greater cortisol recovery. These results suggest an important role of the habitual use of emotion regulation strategies in understanding biological stress reactivity and recovery.