Johanna Drewelies

Secular changes in late-life cognition and well-being: Towards a long bright future with a short brisk ending?

How sociocultural contexts shape individual functioning is of prime interest for psychological inquiry. Secular increases favoring later-born cohorts in fluid intelligence measures are widely documented for young adults. In the current study, we quantified such trends in old age using data from highly comparable participants living in a narrowly defined geographical area and examined whether these trends would generalize to quality-of-life indicators. To do so, we compared data obtained 20 years apart in the Berlin Aging Study (in 1990-1993) and the Berlin Aging Study II (in 2013-2014), applied a case-matched control design (per cohort, n = 161, Mage = 75), quantified sample selection using a nationally representative sample as the reference, and controlled for number of physical diseases. The later cohort performed better on the fluid intelligence measure (d = .85) and reported higher morale, less negative affect, and more positive affect (ds > .39) than the earlier cohort. We concluded that secular advances have resulted in better cognitive performance and perceived quality of life among older adults and discuss when and how advantages of later cohorts reach their limits.

Cohort Differences in Psychosocial Function over 20 Years: Current Older Adults Feel Less Lonely and Less Dependent on External Circumstances.

Background: Lifespan psychological and life course sociological perspectives indicate that individual development is shaped by social and historical circumstances. Increases in fluid cognitive performance over the last century are well documented and researchers have begun examining historical trends in personality and subjective well-being in old age. Relatively less is known about secular changes in other key components of psychosocial function among older adults. Objective: In the present study, we examined cohort differences in key components of psychosocial function, including subjective age, control beliefs, and perceived social integration, as indicated by loneliness and availability of very close others. Methods: We compared data obtained 20 years apart in the Berlin Aging Study (in 1990-1993) and the Berlin Aging Study II (in 2013-2014) and identified case-matched cohort groups based on age, gender, cohort-normed education, and marital or partner status (n = 153 in each cohort, mean age = 75 years). In follow-up analyses, we controlled for having lived in former East versus West Germany, physical diseases, cohort-normed household income, cognitive performance, and the presence of a religious affiliation. Results: Consistently across analyses, we found that, relative to the earlier-born BASE cohort (year of birth: mean = 1916; SD = 3.38 years; range = 1901-1922), participants in the BASE-II sample (year of birth: mean = 1939; SD = 3.22 years; range = 1925-1949) reported lower levels of external control beliefs (d = -1.01) and loneliness (d = -0.63). Cohorts did not differ in subjective age, availability of very close others, and internal control beliefs. Conclusion: Taken together, our findings suggest that some aspects of psychosocial function of older adults have improved across the two recent decades. We discuss the possible role of sociocultural factors that might have led to the observed set of cohort differences.

Linked Lives: Dyadic Associations of Mastery Beliefs With Health (Behavior) and Health (Behavior) Change Among Older Partners

Objectives Mastery beliefs are known to contribute to healthy aging. However, it is an open question whether individual mastery-health associations impact the health of close long-term partners. Method We applied actor-partner interdependence models to 4-wave, 6-year longitudinal dyadic data from married and cohabitating partners in the Health and Retirement Study (N = 1,981 partners; age at baseline: M = 67 years, SD = 8.93, range 50-94 years). Results Higher individual mastery beliefs were associated with better individual physical health and health behaviors. Higher mastery beliefs were associated with subsequent increases in light physical activity. Having a partner with higher levels of mastery was uniquely associated with fewer functional limitations, better self-rated health, and more physical activity. Actor × Partner interaction effects for functional limitations indicated multiplicative associations of actor and partner mastery with health. Of note, mastery-health associations for individuals and their partners were invariant across age, gender, education, employment status, perceived stress over ones own and partners health, and cognition. Discussion Findings suggest that partner mastery beliefs matter for the health (behaviors) of older adults. We discuss possible mechanisms underlying partner interrelations in mastery and health, their age invariance, and consider implications arising from our results.

Perceived control across the second half of life: The role of physical health and social integration.

Perceived control is a key component of successful aging and may serve as a protective factor against age-related declines in central domains of functioning. However, it is a largely open question whether and how perceived control changes from midadulthood to very old age and how such change is shaped by health and social contexts. To examine these questions, we apply growth models to up to 15-year 4-wave longitudinal data from the German Ageing Survey (DEAS; N = 10,081; aged 40–85 years at baseline; 49% women). Results revealed that perceived control is relatively stable in midlife, but starts to decline after midlife. Starting at 70, perceived control declines an average of a quarter of a SD per 10 years. Suffering from comorbidity and functional limitations were each associated with considerably lower perceived control. Volunteering and less loneliness were each uniquely associated with higher perceived control, over and above the other social factors as well as sociodemographic and health variables. Surprisingly, less social support was associated with stronger perceived control. We also found significant interaction effects suggesting that the combination of functional limitations with older age and loneliness with lower education were each associated with particularly compromised perceived control. Overall we found little evidence for correlates of change in perceived control, with only the loneliness—control association becoming slightly weaker over time. We take our findings to suggest that various different facets of social integration later in life are uniquely relevant for perceived control and suggest routes for further inquiry.

Age variations in cohort differences in the United States: Older adults report fewer constraints nowadays than those 18 years ago, but mastery beliefs are diminished among younger adults.

Life Span psychological and life course sociological perspectives have long acknowledged that individual functioning is shaped by historical and sociocultural contexts. Secular increases favoring later-born cohorts are widely documented for fluid cognitive performance and well-being (among older adults). However, little is known about secular trends in other key resources of psychosocial function such as perceptions of control and whether historical changes have occurred in young, middle-aged, and older adults alike. To examine these questions, we compared data from two independent national samples of the Midlife in the United States survey obtained 18 years apart (1995/96 vs. 2013/14) and identified case-matched cohorts (per cohort, n = 2,223, aged = 23–75 years) based on age and gender. We additionally examined the role of economic resources for cohort differences in perceived mastery and constraints. Results revealed that older adults in later-born cohorts reported perceiving fewer constraints than did matched controls 18 years ago, with such positive secular trends being particularly pronounced among women. In contrast, younger adults reported perceiving more constraints in later-born cohorts than those 18 years ago and also reported perceiving lower mastery. We conclude from our national U.S. sample that secular trends generalize to central psychosocial resources across adulthood, such as perceptions of control, but are not unanimously positive. We discuss possible underlying mechanisms and practical implications.

Perceived constraints in late midlife: Cohort differences in the Longitudinal Aging Study Amsterdam (LASA).

Life span psychological and life course sociological perspectives have long acknowledged the role of historical and sociocultural contexts for individuals’ functioning and development. Secular increases favoring older adults in later born cohorts are widely documented for fluid cognitive performance and well-being. However, less is known about secular trends in further key resources of psychosocial functioning, such as perceptions of constraints, and how these are driven by and associated with well-established and probably interrelated secular trends in several individual difference characteristics, including sociodemographic, religiosity, physical health, cognitive, and social variables. To examine these questions, we compared data from 2 independent local samples of the Longitudinal Aging Study Amsterdam (LASA) obtained 20 years apart, in 1992–1993 (n1992–1993 = 795; age = 55–65 years) versus in 2012–2013 (n2012–2013 = 819; age = 55–65 years). Results revealed that in late midlife, people today perceive fewer constraints than did same-aged peers 20 years ago. These secular trends remained after covarying for individual and cohort differences in physical health, performance-based measures of cognitive functioning (memory), quantitative and qualitative indicators of social support, and self-esteem. The effect size was in the moderate range (d = −.20). We conclude that secular trends such as perceptions of constraints in people’s lives generalize to key psychosocial resources across adulthood and old age. We discuss potential underlying mechanisms and consider practical implications of our findings.

Psychological and neural correlates of embitterment in old age

Objective: Posttraumatic embitterment disorder (PTED) comprises a stress-related response to a negative life event that violates the belief system of the individual. Characteristic symptoms involve repeated intrusive thoughts, emotional arousal when reminded of the event, and decreases in well-being. Method: Within the scope of the present study, embitterment was treated as a continuous rather than categorical concept, and we investigated its psychological and brain structural correlates in a sample of healthy older adults. Results: We found a negative association between the PTED self-rating score and self-reported well-being, life satisfaction, and future time perspective and a positive association with loneliness, perceived stress, chronic strain, and external control beliefs. We found no significant association between embitterment and brain regions that have been associated with stress exposure and posttraumatic stress disorder (PTSD)—hippocampus and the medial prefrontal cortex. This may emphasize the fundamental difference between PTED and PTSD. In a whole-brain analysis, we found a positive correlation between embitterment and gray matter volume in the precuneus and white matter volume in the bilateral uncinate fasciculus. Conclusions: The precuneus and uncinate fasciculus are brain regions that have been related to episodic memory retrieval, matching well to the symptoms of intrusive thoughts and an overwhelming preoccupation with the event that caused the PTED. Further longitudinal research is needed to unravel whether these structural correlates represent preconditions or rather the consequence of embitterment.

Historical trends in modifiable indicators of cardiovascular health and self-rated health among older adults: Cohort differences over 20 years between the Berlin Aging Study (BASE) and the Berlin Aging Study II (BASE-II)

Background The last decades have seen great advances in the understanding, treatment, and prevention of cardiovascular disease (CVD). Although mortality rates due to CVD have declined significantly in the last decades, the burden of CVD is still high, particularly in older adults. This raises the question whether contemporary populations of older adults are experiencing better or worse objective as well as subjective health than earlier-born cohorts. The aim of this study was to examine differences in modifiable indicators of cardiovascular health (CVH), comparing data obtained 20 years apart in the Berlin Aging Study (BASE, 1990–93) and the Berlin Aging Study II (BASE-II, 2009–2014). Methods Serial cross-sectional analysis of 242 propensity-score-matched participants of BASE (born 1907–1922) and BASE-II (born 1925–1942). Body mass index (BMI), blood pressure, total cholesterol, glycated hemoglobin (HbA1c), diet, smoking and physical activity were operationalized according to the “Life’s simple 7“(LS7) criteria of the American Heart Association. Results 121 matched pairs were identified based on age, sex, and education. In the later-born BASE-II sample, the mean LS7 score was significantly higher than in the earlier-born sample (7.8±1.8 vs. 6.4±2.1, p<0.001), indicating better CVH. In detail, diet, physical activity, smoking, cholesterol, and HbA1c were more favorable, whereas blood pressure was significantly higher in individuals from the later-born cohort. BMI did not differ significantly between the two matched samples. Notably, despite better CVH, later-born individuals (BASE-II) reported lower self-rated health, presumably because of higher health expectations. Conclusions Overall, cardiovascular health was significantly better in the later-born cohort, but several notable exceptions exist.

The More We Are in Control, the Merrier? Partner Perceived Control and Negative Affect in the Daily Lives of Older Couples

Objectives It is well established that daily perceived control is closely associated with lower negative affect among older adults. However, it is an open question whether control perceptions of ones partner are also uniquely associated with ones own negative affect. Method To examine such associations in dyads of older long-term partners, we make use of data obtained six times a day over seven consecutive days as participants went about their everyday lives (N = 87 couples; mean age = 75 years; mean relationship length = 46 years). Our multilevel actor-partner models for dyadic data analyses covary for relevant individual and couple differences in socio-demographic characteristics, self-reported physical health, and cognitive functioning. Results Corroborating and extending earlier reports, results reveal that higher momentary perceived control was associated with lower negative affect. Most importantly, we found that higher momentary perceived control of the partner is additionally and uniquely associated with lower negative affect of the actor. Discussion We discuss possible mechanisms and underlying pathways of how perceived control may help both partners down-regulate their negative emotions in daily life. We close by considering conceptual and practical implications.

Facets of subjective health horizons are differentially linked to brain volume

An active lifestyle including physical exercise and novelty processing is considered to promote brain health. Also, subjective future time perspectives (FTP) are known to shape motivation and goal-directed behavior, with links to objective health, well-being, and cognition. Nevertheless, the links between subjective FTP and brain physiology are largely unknown. We report data from 326 healthy older adults who completed the Subjective Health Horizon Questionnaire (SHH-Q) and structural magnetic resonance imaging (MRI). Voxel-based morphometry analyses revealed associations between (1) the SHH-Q Novelty factor and brain regions of the episodic memory network, and (2) the SHH-Q Body factor and regions contributing to the cortical representation of bodily states. Longitudinal and experimental data are needed to better understand the etiology of these links.