20-year trajectories of health in midlife and old age: Contrasting the impact of personality and attitudes toward own aging.

= 500) adults. Based on longitudinal multilevel regression models (controlling for gender and education), we found at the between-person level that lower neuroticism scores and more positive ATOA scores were independently associated with better physician-rated health at baseline. This association of ATOA with health was stronger in the old age sample than in the midlife sample. At the within-person level, time-varying associations revealed that both middle-aged and older individuals had better physician-rated health on measurement occasions when they reported more favorable ATOA. In addition, in the old age subsample alone, individuals' physician-rated health was better on occasions when they had higher conscientiousness scores. Our findings suggest that certain personality traits (conscientiousness, but not neuroticism) as well as attitudes toward own aging may gain in importance in later life as predictors of objective health changes. (PsycInfo Database Record (c) 2020 APA, all rights reserved).