Perceived discrimination and incident dementia among older adults in the U.S.: The buffering role of social relationships

OBJECTIVES

Recent studies have found that perceived discrimination as a chronic stressor predicts poorer cognitive health. However, little research has investigated how social relationships as potential intervening mechanisms may mitigate or exacerbate this association. Using a nationally representative sample of U.S. older adults, this study examined how the existence and quality of four types of relationships-with a partner, children, other family members, and friends-may modify the impact of perceived discrimination on incident dementia.

METHODS

We analyzed data from the 2006-2016 Health and Retirement Study (N=12,236) using discrete-time event history models with competing risks. We used perceived discrimination, social relationships, and their interactions at the baseline to predict the risk of incident dementia in the follow-ups.

RESULTS

Perceived discrimination predicted a higher risk of incident dementia in the follow-ups. Although having a partner or not did not modify this association, partnership support attenuated the negative effects of discrimination on incident dementia. Neither the existence nor quality of relationships with children, other family members, or friends modified the association.

DISCUSSION

Our findings imply that intimate partnership plays a critical role in coping with discrimination and, consequently, influencing the cognitive health of older adults. While perceived discrimination is a significant risk factor for the incidence of dementia, better partnership quality may attenuate this association. Policies that eliminate discrimination and interventions that strengthen intimate partnership may facilitate better cognitive health in late life.

Spousal Problems and Family-to-Work Conflict Among Employed US Adults

Using data from the 2011 National Survey of Midlife Development in the United States Refreshed Sample (N = 980), this paper examines how three types of spousal problems-poor physical health, poor mental health, and behavioral disorders-are related to respondents' family-to-work conflict (FWC) among employed adults aged 25-61. Results suggest that all three types of their spouses' problems were related to respondents' higher FWC, with their spouses' poor mental health having the strongest association. These associations were not significant after controlling for respondents' role overload, financial strain, and relationship strain. There were few variations by respondents' gender and parental status in these associations. Relationship strain played the primary role as a mediator, which was stronger for men than women. These findings support the idea of stress proliferation, suggesting that one's problems can be linked to a series of other stressors including one's spouse's FWC.