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  • Title: Salivary cortisol responses to a psychosocial laboratory stressor and later verbal recall of the stressor: The role of trait and state rumination.
    Author: Zoccola PM, Quas JA, Yim IS.
    Journal: Stress; 2010 Sep; 13(5):435-43. PubMed ID: 20666646.
    Abstract:
    This study investigated whether trait rumination predicts greater increases in salivary cortisol concentration and delayed recovery in response to a standardized, acute laboratory psychosocial stressor (modified Trier Social Stress Test). It also tested whether trait and state rumination predict reactivation of the cortisol response during later verbal recall of the stressor. Fifty-nine undergraduates (31 females; 28 males) completed the stress protocol and returned 2 weeks later for a surprise interview about the first session, conducted in either a supportive or unsupportive context. Participants completed a measure of trait rumination and reported negative thoughts about the stressor in the 2 weeks between sessions (state rumination). Trait rumination was associated with greater reactivity of salivary cortisol level and delayed recovery from the stressor, F(1,310) = 6.77, p < 0.001. It also predicted greater cortisol reactivity when recalling the stressor, but only for males in the unsupportive interview context, F(2,119) = 7.53, p < 0.001. This effect was heightened for males who also scored high on state rumination, F(2,119) = 7.53, p < 0.001. Rumination was not associated with cortisol responses to the interviews in females. The findings indicate that rumination may play a role in prolonging cortisol stress responses through delayed recovery and reactivation and that rumination disposition and the context of stressor recall are important in understanding the rumination-cortisol response association.
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