Numerous studies have emphasized a stable relationship between subjective age and health. However, few longitudinal studies exist and these have normally tested only one causal pathway. The present study investigated the direction of effects between subjective age and different health dimensions in 3,038 participants of the German Ageing Survey, aged 40 years and older. Cross-sectionally, subjective age correlated with all health dimensions studied. Longitudinally, subjective age predicted physical, mental, and self-rated health, whereas the reverse effect was found only for self-rated health. Subjective age thus seems to be an important resource for preserving health in the second half of life.

Using data from the German Ageing Survey (Deutscher Alterssurvey, DEAS; N = 4,712), this study examined age-related change in three dimensions of self-perceptions of aging (SPA): perceptions of physical losses, social losses, and ongoing development. Participants ranged in age from 40 to 85 years at study entry (1996, 2002, or 2008) and were followed for up to 21 years. Time-invariant, context-specific and timevarying, person-specific predictors of the observed age-related changes were examined. Findings from longitudinal multilevel regression analyses showed significant nonlinear age-related change for all three dimensions. Specifically, starting at about age 65, participants showed age-related increases in perceptions of physical and social losses, with increases getting steeper in old age. Starting at about age 55, participants reported increasingly fewer perceptions related to ongoing development. The decline in perceptions of ongoing development also became increasingly steeper after age 70. Region of residence was a significant context-specific predictor of the intercepts of the three SPA dimensions. Health-related variables (i.e., number of chronic diseases, self-rated health), affective well-being (i.e., positive and negative affect), and measures of social integration (i.e., loneliness) were significant person-specific predictors. Health-related variables had their strongest association with perceptions of physical losses, whereas negative affect and loneliness had their strongest association with perceptions of social losses. Positive affect had its strongest association with perceptions of ongoing development. This study is the first one to describe age-related change trajectories in multiple dimensions of SPA and significant predictors of these change trajectories.

Previous studies have shown that some predictors of self-rated health (SRH) become more important with age, while others become less important. Although based on cross-sectional data, these findings are often interpreted as age-related changes in evaluation criteria. However, results could be due to cohort effects as well. We attempted to disentangle age and cohort effects by combining and comparing cross-sectional and longitudinal data from a large-scale longitudinal survey. The sample consisted of 2,982 community-dwelling participants from 2 measurement occasions of the German Ageing Survey ages 40-81 years at baseline. Multigroup latent regression models were used to examine whether associations between various predictors and SRH differed between age groups and whether they changed over time. Comparisons of cross-sectional age differences in SRH-predictor associations and longitudinal age changes in the same associations allow the identification of cohort effects. Number of chronic conditions showed a constant negative association with SRH independently of age and cohort. In contrast, the association between SRH and all other predictors (physical functioning, exercise, life satisfaction, depressive symptoms, and positive affect) changed longitudinally, pointing to an age effect. Prediction of SRH by depressive symptoms and positive affect showed an additional cohort effect: The negative associations between depressive symptoms and SRH and the positive associations between positive affect and SRH were stronger among younger cohorts. The findings provide not only longitudinal support for previous cross-sectional studies, but also show the impact of historical change: Emotional facets of psychological well-being increase in relevance for SRH across cohorts.

Although a large body of research has demonstrated the predictive power of subjective ageing for several decisive developmental outcomes, there remains some controversy about whether subjective ageing truly represents a unique construct. Thus, information about the convergent and discriminant validity of different approaches to measuring subjective ageing is still critically needed. Using data from the 2014 wave of the German Ageing Survey, we examined how three established subjective ageing measures (subjective age, global attitude toward own ageing, multidimensional ageing-related cognitions) were inter-related as well as distinct from general dispositions (optimism, self-efficacy) and well-being (negative affect, depressive symptoms, self-rated health). Using correlational and multivariate regression analysis, we found that the three subjective ageing measures were significantly inter-related ( r = |.09| to |.30|), and that each measure was distinct from general dispositions and well-being. The overlap with dispositional and well-being measures was lowest for subjective age and highest for global attitudes towards own ageing. The correlation between global attitudes towards own ageing and optimism was particularly striking. Despite the high convergent validity of the different dimensions of ageing cognitions, we nevertheless observed stronger associations between specific dimensions of ageing cognitions with negative affect and self-rated health. We conclude that researchers should be aware of the multidimensional nature of subjective ageing. Furthermore, subjective age appears to be a highly aggregated construct and future work is needed to clarify its correlates and reference points. Electronic supplementary material The online version of this article (10.1007/s10433-019-00529-7) contains supplementary material, which is available to authorized users.

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Health conditions such as higher disease burden, pain, or lower functional health are associated with poorer self-rated health (SRH) in older age. Poorer SRH, in turn, is a predictor of morbidity and mortality. Personality traits are associated with SRH as well, but little is known about the interaction of personality and health conditions. In the present preregistered analyses, we used five annual waves of the Health, Aging and Retirement Transitions in Sweden (HEARTS) study (N = 5,823, M age = 63.09, SD = 2.01) to investigate the associations of personality (neuroticism and conscientiousness) and physical health indices (disease burden, pain, and functional limitations) with levels and change in SRH. In addition, we tested Personality × Health interaction effects. We found that higher neuroticism and lower conscientiousness were related to lower levels of SRH, but not to change in SRH after controlling for the health indices. Personality did not moderate the effect of health indices on levels and change in SRH. Exploratory analyses showed that high scores of neuroticism may augment the association of increased pain and functional limitations with declines in SRH. Additional studies with other samples are needed to test if this result can be replicated. Taken together, our findings provide only weak evidence for interaction effects of personality and physical health factors on SRH. More research is needed to understand the interplay of physical and psychological factors in shaping individual SRH.

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Impaired vision often results in restrictions across diverse key indicators of successful aging. However, little is known about how impaired vision affects the long-term trajectories of these outcomes, whether effects are moderated by age, and whether psychosocial resources beyond well-being such as subjective age views are also affected by vision loss. We analyzed how self-reported vision problems as a time-varying predictor are related to long-term changes in health and cognitive ability (functional health, number of chronic diseases, self-rated health, information processing speed), well-being (life satisfaction, positive and negative affect, depressive symptoms, loneliness), and subjective age views (subjective age; aging-related cognitions: social loss, physical decline, continuous growth). Our sample was derived from the German Ageing Survey, comprising 6,378 individuals (40–89 years) who provided up to four observations over a 9-year period. Controlling for gender, age, education, and functional as well as self-rated health, we observed that both on a between- and a within-person level, indicators of successful aging were consistently less favorable among individuals with more vision problems. Associations between vision problems and functional health became stronger with advancing age. In contrast, with increasing age, vision problems were less closely associated with change in several indicators of psychosocial functioning. Our findings suggest that self-reported visual impairment is associated with restrictions across a broad range of developmental domains. Some detrimental effects of vision problems are augmented in later life, whereas several effects on well-being and subjective age views were attenuated with advancing age, which might indicate processes of late-life adaptation to vision loss.