This study aimed to examine the relationship between positive perceptions of aging, purpose in life, and life satisfaction in older adults. It was hypothesized that purpose in life mediates the relationship between positive perceptions of one's aging and life satisfaction. This hypothesis was tested in a sample of older American adults from four waves of the Health and Retirement Study collected at 4-year intervals between 2008 and 2020 (N = 11,546, mean age in 2008 = 62.772). The random intercept cross-lagged panel model was used to separate within-person and between-person sources of variance. Mediation was tested at the longitudinal within-person level and was supported. Results suggest that an increase in positive perceptions of aging is associated with a future increase in purpose in life, which in turn is associated with higher future levels of life satisfaction. The findings inform interventions promoting positive aging, purpose, and life satisfaction in older adults.
Keywords: RI-CLPM; life satisfaction; mediation; perception of aging; purpose in life.