Bidirectional Relationships Between Well-Being and Cognitive Function.

The current study examined bidirectional relationships between well-being and cognitive function using up to 10 annual assessments ( 5.67, 3.43) of different types of well-being and a comprehensive cognitive battery from a sample of older adults living in the Chicago metropolitan area ( = 1,702; mean age = 81.07 years, = 8.04; 75.1% White Americans, 23.9% Black Americans). Bivariate latent growth curve models indicated older adults who started out with better well-being also had better cognitive function, and sharper decreases in well-being were associated with sharper declines in cognitive function. Random-intercept cross-lagged panel models indicated older adults with better well-being on average had better cognitive function on average. Further, well-being change at one time point predicted subsequent cognitive change and vice versa. These findings were stronger for eudaimonic well-being and sense of purpose than for life satisfaction. Findings highlight the role of well-being in the goal to combat cognitive decline, as well as the importance of supporting well-being in individuals experiencing cognitive decline.