Low objective and subjective socioeconomic status (SES) is associated with the experience of frequent stressors known to have physiological costs. We tested whether perceived social support, a key health-protective resource, buffered the association between lower subjective SES and cortisol responses to an acute stressor. Participants (N = 115; 54.78% female; age M = 19.56) reported subjective SES and perceived support, completed a social-evaluative stressor task, and provided saliva for cortisol assessment. There was a significant interaction of subjective SES with support predicting linear change in cortisol stress responses, γ = .08, z = 2.34, p = .02. When support was low, subjective SES was strongly related to cortisol, and those who reported lower subjective SES exhibited higher cortisol during recovery than those who reported higher subjective SES. When support was high, those who reported higher and lower subjective SES exhibited similar cortisol responses. These results highlight the important protective role that supportive relationships can have when subjective SES is low.
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