Does the Impact of Episodic Memory Declines on Future Changes in Perceived Control Vary Based on Individuals' Experience With Cognitively Demanding Jobs?

OBJECTIVES: This study proposes and evaluates a scenario wherein cognitive demands experienced at work can amplify the positive cross-lagged association of a shift in control beliefs following changes in episodic memory. METHODS: From the Health and Retirement Study (2006-2018) for 9,998 participants aged 50 or above, we used repeated observations of memory and control beliefs, assessed with the Telephone Interview for Cognitive Status-modified (TICS-m) and self-mastery and perceived constraints questionnaires. A dual-Latent Change Score Model estimated the cross-lagged effects between memory and control beliefs, separately for individuals with prior high cognitive job demands and those without. RESULTS: A decline in memory led to decreased control beliefs in terms of perceived constraints, only among those with experiences in cognitively demanding jobs. DISCUSSION: High cognitive job demands may lead to a more cognitively oriented awareness of aging, thus amplifying the impact of memory decline on control constraints.

Are Changes in Somatic Health Reflected Differently in Updated Self-Ratings by Big-Five Personality Traits?

Objectives: This longitudinal study tests whether the Big-Five personality traits influence the changes individuals make in self-rated health (SRH) as they adjust their initial level to account for information on concurrent changes in disease burden, activities of daily living (ADLs), and pain. Methods: A bi-variate Latent Growth Curve model was fitted to data to estimate longitudinal associations between SRH and each health measure across up-to-five repeated observations, collected from the year 2006 to 2018 from 13,096 participants in the Health and Retirement Study. Results: Negative longitudinal associations between SRH and all three health reports were significantly stronger for those who are more conscientious. No significant moderation was found for the other four personality traits. Discussion: Compared to the less conscientious, highly conscientious people may assign greater importance to specific health reports when rating and revising their assessments of SRH. This moderating effect was previously tested but not supported.

Do Older Adults Adjust Their Control Beliefs According to Changes in Mobility Limitations? Evidence From a Large-Scale Observational Study.

OBJECTIVES: This study examines cross-over, time-lagged (cross-lagged) effects of nonintervened changes between mobility limitations and control constraints/self-mastery. METHODS: Using the Health and Retirement Study data from the years 2006 to 2016 from 10,690 participants, changes in mobility limitations, control constraints, and self-mastery were analyzed simultaneously with 3 latent change score models, to account for measurement error and pre-existing mobility issues prior to baseline. RESULTS: An increase in mobility limitations predicts a decrease in mastery observed in the next interval, but not the other way around. Cross-lagged effects of changes are significant only between control and local mobility limitations concerning upper/lower extremity and associated large muscles. DISCUSSION: The results indicate reciprocity between perceived control constraints and local mobility regardless of pre-existing limitations. To better facilitate recovery and prevention, future intervention designs should consider alleviating control constraints in addition to improving self-mastery.

The roles of non-heterosexuality outside of identity and gender non-conformity in Allostatic Load among young adults.

Using the National Longitudinal Study of Adolescent to Adult Health, this study contrasted levels of Allostatic Load at the baseline and change observed between the age 20s and 30s, among self-identified Lesbians/Gays/Bisexuals and heterosexuals with non-heterosexual attraction/behavior (discordant heterosexuals), against heterosexuals without (concordant heterosexuals). In addition, the study tested if Allostatic Load differs for each of the sexual orientation group differs jointly or independently of gender non-conformity. The study found no Allostatic Load elevation for self-identified non-heterosexual men and women. For women only, a significantly greater elevation of Allostatic Load is observed among discordant heterosexuals. Independently, Allostatic Load is found higher for females appearing more androgynous. The findings suggest expanding the current scope of sexual minority research to consider the relevance of minority stress to those without a LGB identity, who may be exposed to stress from disparate sources related to their gender identity.

Widening, Narrowing, and Persistence of Socioeconomic Gaps Between Sexual Minorities and Heterosexuals Across Adulthood.

In socioeconomic attainment, same-sex sexuality (SSS) matters, as well as whether SSS is experienced in adolescence (early) or not until later in adulthood (late). Using data from 8912 participants of the National Longitudinal Study of Adolescent to Adult Health, sexual minorities are identified as the early or late groups. Multilevel regression models were used to compare their income, occupational status, and education separately against heterosexuals, based on repeated measures taken in their 20s, 30s, and 40s. This study found a significant lag in high-school graduation compared to a subgroup of men in the early group that did not express same-sex sexuality in adulthood. Independently, "gay penalty" in income emerged for the late group as they entered their 30s, and persisted into their 40s. No socioeconomic gaps were observed for the women. To serve equity goals for all sexualities, closer attention needs to be given to those with an evolving history of same-sex sexuality.

Would It Kill You to Retire? Testing Short/Long Term/Recurrent Effects of Retirement on All-Cause Mortality Risk.

This study traced all-cause mortality risk over the course of retirement and tested whether re-retirement impacts mortality risk differently than the first time. The study differentiated retirement on whether prompted by health (health retirement) or not (non-health retirement). Based on data from 1992 to 2016 Health and Retirement Study (HRS), the sample consists of 7747 women and 7958 men who were working at the baseline. Adjusting for physical health before/after retirement, the discrete-time logit model found increased mortality risk within the first year of non-health retirement only for men, regardless of physical health changes. Re-retirement did not raise mortality risk further. Furthermore, health retirement increased mortality for men and women but substantially less after their surviving the first year. The findings urge future study to explore non-physical pathways of an immediate mortality increase for men in retirement, as well as the monitoring of population trends in health retirement and its antecedents.

Age Profiles of Cognitive Decline and Dementia in Late Life in the Aging, Demographics, and Memory Study.

OBJECTIVES: To better understand the temporal dynamics of progression from cognitive decline to onset of dementia in the dementia-free older population in the United States. METHODS: We used longitudinal data from a diverse national population-based sample of older adults (N = 531) in the Aging, Demographics, and Memory Study from the Health and Retirement Study with repeated measures of cognitive function and dementia diagnosis during 12 years of follow-up from 1996 to 2009. We employed joint latent class mixed models to estimate the association between cognitive change and competing risks of dementia and nondementia death and identify heterogeneity in the age profiles of such association adjusting for baseline characteristics. RESULTS: Our analyses found 3 latent classes with distinct age profiles of cognitive decline and associated risk of dementia and mortality: "Rapid Cognitive Decline" (19.6%), "Moderate Progression" (44.6%), and "Optimal Cognitive Aging" (35.8%). When simultaneously accounting for cognitive trajectories and time-to-dementia/death, we also found associations of baseline covariates with slope of cognitive decline (e.g., steeper decline among non-Hispanic Blacks and more educated) and risk of dementia (e.g., greater risk for females and apolipoprotein E-4 carriers, but no difference by education level) that differ substantially from those in separate longitudinal mixed models or survival models. DISCUSSION: The differential age patterns of cognitive decline predicting dementia incidences identified in this study suggest variation in the course of cognitive aging in older adults that may inform future etiological and intervention studies.

Does Retirement Get Under the Skin and Into the Head? Testing the Pathway from Retirement to Cardio-Metabolic Risk, then to Episodic Memory.

Many studies document significant causal impacts of retirement on cognitive abilities. It remains unclear if cognitive functioning could be hindered in post-retirement due to heightened physiological responses to stress. Using repeated observations of biomarkers, retirement status, and the word-recall test score from the Health and Retirement Study (n = 25,367; 15,343 among women and 10,024 among men), the study tests this pathway, separately for men and women. The study employs the two-stage least squares fixed-effects model that simultaneously fits three equations predicting the total-recall score, cardio-metabolic risk index, and retirement status. Being retired for at least a year decreases cardio-metabolic risk for men and women, and the resulting relief of cardio-metabolic risk improves cognitive functioning for women but not for men. Retirement does not lead to a downward health spiral as previously suggested; rather, it provides a much needed relief from stressors for those who are at health risks.

Cardiometabolic Risk and Cognitive Decline: The Role of Socioeconomic Status in Childhood and Adulthood.

Socioeconomic conditions in childhood predict cognitive functioning in later life. It is unclear whether poor childhood socioeconomic status (SES) also predicts the acceleration of cognitive decline. One proposed pathway is via cardiometabolic risk, which has been linked to both childhood SES and earlier onset of cognitive impairment. Using data from the Health and Retirement Study, we examine the impact of childhood SES on cognitive trajectories over six years and test whether it operates through increased cardiometabolic risk and adult SES. We find that higher childhood SES leads to slower cognitive decline, partially due to lower levels of cardiometabolic risk. However, these pathways operate entirely through adult socioeconomic attainment. The results have important implications for future trends in cognitive population health within the context of growing social inequality and reduced social mobility.

Does Gender Differentiate the Effects of Retirement on Cognitive Health?

Prior research on change in cognitive performance before and after retirement suffers from inattention to gender context. This study theoretically motivates the testing of gender differences in cognitive decline after retirement. I drew 67,905 observations of cognitive function based on the Telephone Interview for Cognitive Status from 18,453 participants (7,830 men and 10,623 women) in the Health and Retirement Study (1992-2014). I used fixed-effects two-stage least square models to account for unobserved heterogeneity between men and women in the sample and the endogeneity of retirement decision. I also controlled for change in depressive symptoms, mobility limitations, individual wealth, medical expenses, and spousal income. Retirement predicts a decrease in the cognitive score by 2.168 on a scale of 0-35 for women, but no change for men. Continued employment may buffer against risk factors that aggravate women's cognitive health.

Does degree completion improve non-cognitive skills during early adulthood and adulthood?

INTRODUCTION: Non-cognitive skills, particularly in terms of risk-aversion, future-orientation, and conscientiousness, grow with age, and this phenomenon is known as personality maturation. However, significant variability in maturation among individuals exists. The technology of cognitive/non-cognitive skill formation suggests that the growth of non-cognitive skills is contingent on cognitive skills or human capital in general. The completion of formal education is a quintessential form of human capital. The aim of this study is to test whether formal education indeed facilitates the improvement of non-cognitive skills during early adulthood and adulthood.] METHODS: I used data from the National Longitudinal Study of Adolescent to Adult Health. The study sample consists of 9291 individuals, representative of U.S. adolescents in grades 7 through 12 in 1994. The longitudinal design of the data allowed the repeated measurement of their non-cognitive skills in adolescence (age < 18), early adulthood (between 18 and 25) and then in adulthood (>25). I used Latent Score Difference modeling to examine whether advancement in formal education through degree completion predicts within-individual change in non-cognitive skills in early adulthood and adulthood. RESULTS: A steady increase in non-cognitive skills beyond adolescence was found. Independently of academic engagement during high school, parental socio-economic status, and adolescent non-cognitive skills, degree completion reported in early adulthood coincides with gains in non-cognitive skills since adolescence, and this positive feedback repeats itself in adulthood. CONCLUSIONS: Continued schooling facilitates personality maturation beyond adolescence. Given the profound effects of non-cognitive skills on various life outcomes, educational opportunities could alleviate social stratification.

Trajectories of Suicidal Ideation from Adolescence to Adulthood: Does the History of Same-Sex Experience Matter?

The fluidity of same-sex experience (SSE) can be conceptualized as both a risk and a resource that impacts suicidal ideation over time. Considering whether SSE occurs in adolescence, adulthood, or both, this study suggests that SSE in both adolescence and adulthood is associated with depression and low self-esteem throughout the life course, resulting in chronic susceptibility to suicidal ideation. Yet due to variation in both accumulation of risk and resources over time, trajectories of suicidal ideation during the transition to adulthood likely vary by timing of SSE. To test these hypotheses, we fit latent growth curve models to a gender-stratified sample taken from the National Longitudinal Study of Adolescent to Adult Health (7608 men, 8070 women). We created four groups of SSE: no SSE (6322 men, 5981 women), SSE in adolescence only (634 men, 480 women), SSE in adulthood only (372 men, 1081 women), and SSE in adolescence and adulthood (280 men, 528 women). Men and women with SSE in both life stages had the greatest risk of suicidal ideation in adolescence and in adulthood. Yet women with first SSE in adulthood had less of a decline in suicidal ideation over time, relative to those with no SSE and those with SSE in adolescence only, and this was partially due to higher depression and lower self-esteem. Results suggest greater support is needed for adolescents expressing non-normative sexualities and for those with first SSE in adulthood, a group that is more difficult to identify in schools.

The developmental origins of health and disease in international perspective.

The developmental origins of health and disease and the comparative international approach are two important strands of research exploring population health. Despite the potential insights to be gained from integrating the two approaches, their nexus remains an underexplored frontier. The current study investigates international variation in the early life origins of health among aging cohorts in 13 countries. We examine cross-national differences in exposure to poor childhood health and socioeconomic disadvantage, whether the long-term health associations with those exposures vary across contexts, and whether they persist in the face of subsequent accumulation of socioeconomic and behavioral risk. Finally, we investigate whether childhood health and socioeconomic circumstances help explain between-country differences in later life health. The findings suggest substantial international variation in the exposure to early life health and socioeconomic insults. We also find variation in their association with later life health. However, early life factors appear to play a modest role in explaining international differences in later life health in the contexts examined here.

The Life Course, Cohort Dynamics, and International Differences in Aging Trajectories.

In recent years, population health research has focused on understanding the determinants of later-life health. Two strands of that work have focused on (1) international comparisons of later-life health and (2) assessing the early-life origins of disease and disability and the importance of life course processes. However, the less frequently examined intersection of these approaches remains an important frontier. The present study contributes to the integration of these approaches. We use the Health and Retirement Study family of data sets and a cohort dynamic approach to compare functional health trajectories across 12 high-income countries and to examine the role of life course processes and cohort dynamics in contributing to variation in those trajectories. We find substantial international variation in functional health trajectories and an important role of cohort dynamics in generating that variation, with younger cohorts often less healthy at comparable ages than the older cohorts they are replacing. We further find evidence of heterogeneous effects of life course processes on health trajectories. The results have important implications for future trends in morbidity and mortality as well as public policy.

Children's Sense of Control as a Determinant of Adult Health: Causation, Mediation, and Spuriousness.

Previous research suggests higher levels of education instill a greater sense of internal control that promotes health in adulthood. We propose that the sense of control has its origins in early childhood and that prior research has possibly misattributed a mediational role to sense of control in adulthood. Using a conceptual framework that includes these early influences, we employ data from the 1970 British Cohort Study ( N = 9,855), examining the extent to which the association between education and adult health is spurious due to these early childhood factors. We find that the internal sense of control as assessed in childhood and adolescence has profound influences on both education and health in early adulthood and that a substantial portion of the latter association is spurious. We conclude that the sense of control is an important health-related factor originating early in life, influencing both health and education later in adulthood.