Health Factors as Potential Mediators of the Longitudinal Effect of Loneliness on General Cognitive Ability.

OBJECTIVE: Higher levels of loneliness in older adulthood predict cognitive decline, but research on mediating mechanisms is sparse. We examine multisystemic physiological risk, functional ability, self-rated health, depressive symptoms, and social participation as mediating processes for the association between loneliness and general cognitive ability over a 10-year follow-up in an older adult sample. METHODS: Three waves of data from 3,005 individuals (mean intake age: 69.30 (SD: 7.85) years; female = 51.61%) recruited during Wave 1 of the National Social Life, Health, and Aging Project were used to test whether hypothesized mediators collected at the 5-year follow-up explained effects of baseline loneliness on 10-year general cognitive ability. RESULTS: The relationship between baseline loneliness and 10-year general cognitive ability was not mediated by multisystemic physiological risk. Functional ability (b = -0.24, SE = 0.05, p <0.001), self-rated health (b = -0.08, SE = 0.02, p <0.001), depressive symptoms (b= -0.20, SE = 0.05, p <0.001), and social participation (b = -0.03, SE = 0.01, p = 0.016) significantly mediated effects. Indirect effects remained significant after adjusting for demographic covariates and 5-year general cognitive ability, except social participation. DISCUSSION: Loneliness may influence cognitive ability indirectly, signaling waning physical and psychiatric health more proximally correlated with cognitive ability. These mechanisms may serve as targets of intervention for cognitive maintenance in lonely older adults.

Impact of COVID-19 pandemic restrictions on community-dwelling caregivers and persons with dementia.

Restrictions related to the 2019 novel coronavirus (COVID-19) pose unique and significant challenges for community-dwelling caregivers and people with dementia, including disrupted routines, a lack of structure, decreased access to respite care, and new or worsening safety issues related to interpersonal violence and hygiene. In addition to identifying issues confronting caregivers, the authors also describe possible ways to address some of these pressing concerns. (PsycInfo Database Record (c) 2020 APA, all rights reserved).