Objective: Socioeconomic disparities in physiological well-being may be a pathway to the poorer health outcomes observed in those of lower socioeconomic status (SES). The present research examined greater frequency of positive life experiences (POS) as a route through which greater cumulative SES (CSES) may be linked to lower allostatic load (AL), a multisystem index of physiological dysregulation, and assessed whether the association between POS and AL varies along the socioeconomic spectrum.
Method: These associations were examined using data from the Midlife Development in the United States Biomarker Project (N = 2,096). Analyses included tests of whether positive experiences mediated the CSES-AL association, whether CSES moderated associations of positive experiences and AL, and whether CSES moderated positive experience mediation of the CSES-AL association (moderated mediation).
Results: The observed association between CSES and AL was weakly mediated by POS. CSES moderated the POS-AL association, such that POS was associated with AL only at lower levels of CSES. The moderated mediation analysis showed that POS mediated the association between CSES and AL only at lower levels of CSES.
Conclusions: The results suggest complexity in associations between cumulative socioeconomic advantage, positive life events, and physiological well-being. Positive life events may play a stronger role in physiological health in those of lower socioeconomic advantage, as one of multiple pathways through which lower SES is linked to poor health. Given the modifiability of access to, and frequency of, positive life events, the potential role of positive experiences in lessening health disparities warrants further study. (PsycInfo Database Record (c) 2023 APA, all rights reserved).