Abstract

Background: Caregiving grandparents face unique stressors that may affect cognitive health. Discrimination is associated with poorer cognitive performance, whereas stronger perceived control over cognitive aging is associated with better performance. This study examined how everyday discrimination and perceived control over cognitive aging relate to executive function in caregiving grandparents. Methods: Using cross-sectional data from the Midlife in the United States study (MIDUS 3), we analyzed 1326 grandparents (166 caregiving and 1160 non-caregiving) with complete data on all study measures. Everyday discrimination, perceived control over cognitive aging, and executive function were assessed with self-report surveys and telephone-based cognitive assessments. Mediation and moderated mediation models were estimated with covariates. Results: Perceived control over cognitive aging mediated the relation between discrimination and executive function, and this mediation was moderated by caregiving status. Among non-caregivers, stronger perceived control was associated with a weaker negative relation between discrimination and executive function. This protective pattern was not observed among caregiving grandparents. The moderation was attenuated to nonsignificance when an expanded covariate set was added, so it should be considered preliminary. Conclusions: The demands of caregiving may lessen the influence of control beliefs on cognitive performance. Because the design is cross-sectional, these results describe statistical rather than temporal mediation. The findings support targeted interventions for this vulnerable population, although they warrant further investigation.

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