Activity Diversity and Its Associations With Psychological Well-Being Across Adulthood

Positive event diversity: Relationship with personality and well-being

OBJECTIVE

Examining the personality and well-being correlates of positive event diversity.

BACKGROUND

Past research has highlighted that personality traits are linked to the frequency of daily positive events. This study is the first to examine positive event diversity, the extent to which positive events are spread across multiple types of positive life domains, as well as its personality and well-being correlates.

METHOD

We conducted parallel analyses of three daily diary datasets (Ns = 1919, 744, and 1392) that included evening assessment of daily positive events and affective well-being. The Big Five personality traits were assessed in baseline surveys.

RESULTS

Positive Event Diversity was related to higher person-mean daily positive affect but not negative affect. Higher Extraversion, Agreeableness, Openness, and lower Neuroticism were correlated with more positive event diversity. These associations became nonsignificant when controlling for positive event frequency. Positive event frequency moderated the link between positive event diversity and person-mean affect, such that higher positive event diversity was associated with higher negative and lower positive affect for people who experienced more frequent positive events.

CONCLUSIONS

No consistent evidence was found for personality as a moderator of the positive event diversity-well-being link across the three studies. Further, the well-being implications of positive event diversity may be better understood when interpreting them alongside indexes of positive event frequency.

Associations between Daily Stressors, Health, and Affective Responses among Older Adults: The Moderating Effect of Age

INTRODUCTION

Reactivity to daily stressors may change as a function of stressor type and age. However, prior research often excludes older adults or compares them to younger age groups (e.g., younger and middle-aged adults). Recognizing older adults as a heterogeneous population with shifting motivations, this study focused on individuals aged ≥65 years and tested age differences in associations between different types of daily stressors, affect, and physical symptoms.

METHODS

A total of 108 older adults aged 65-92 years (M = 73.11, SD = 5.92; 58% women) completed daily dairy questionnaires on daily stressors, positive and negative affect, and physical symptoms for 14 consecutive days. Multilevel models were employed, adjusting for sex, age, education, living situation, and day-in-study.

RESULTS

Findings revealed age-dependent variations in the associations between daily stressors and affect and physical symptoms. Specifically, external stressors (e.g., finance and traffic stressors) and health stressors were more strongly associated with daily affective states and with overall physical symptoms (respectively) among older age adults. Age did not moderate associations between social stressors and affect or physical symptoms.

CONCLUSION

These findings underscore the heterogeneous nature of older adults' responses to daily stressors based on stressor type and age. Specifically, the oldest-old might benefit from personalized support for dealing with challenges such as health and financial stressors.

Transportation, Routine Activities, and Unmet Travel Needs Among Older Vietnamese Immigrants in the United States

INTRODUCTION

Transportation barriers can affect travel needs and quality of life.

METHODS

This survey examined transportation, routine activities, and unmet travel needs among older Vietnamese immigrants, focusing on gender differences.

RESULTS

Women were more likely to ride with others, less likely to drive, had fewer types of routine activities, and went out for activities less than men. Over 1/4 of the sample had at least one unmet travel need in the previous month (the most common was for visiting family and friends).

DISCUSSION

Interventions to enhance mobility should address age- and gender-based transportation differences and assess for unmet travel needs.

Variety in Pleasant Activities is Associated with Improved Mental Health: Evidence from Two National Samples of U.S. Adults

Engaging in a wide range of pleasant activities may provide mental health benefits, particularly for those genetically predisposed to depression. This study examined associations between pleasant activity variety, mental health, and genetic vulnerability in two U.S. cohort studies (N = 2,088). Participants reported depressive symptoms, mental healthcare visits, and engagement in pleasant activities over the past month. Greater variety of pleasant activities was associated with fewer depressive symptoms in both study samples. Individuals engaging in more diverse pleasant activities also had fewer mental health visits. Individuals with a higher genetic risk for depression experienced a stronger negative association between variety of pleasant activities and depressive symptoms compared to those with a lower genetic risk. These results highlight the potential of diverse pleasant activities as a means to enhance well-being, particularly among individuals genetically susceptible to depression.

Supplementary Information

The online version contains supplementary material available at 10.1007/s42761-023-00225-x.

The relationship between cognitive reserve focused on leisure experiences and cognitive functions in bipolar patients

Bipolar disorder (BP) is characterized by cognitive decline. Individual differences exist in maintaining cognitive function due to daily physical activity and sleep. We examined the relationship between leisure experiences as proxies for cognitive reserve (CR) and cognitive function in patients with bipolar disorder after adjusting for daily physical activity and sleep. The CR of patients with BP (n = 24) and healthy study controls (HC) (n = 24) was assessed using premorbid IQ, years of education, and leisure activity history. Performance-based neuropsychological tests were performed to evaluate cognitive function. A self-reported scale was used to assess resilience. Physical activity and sleep were measured using an activity meter. Verbal fluency, story memory, and verbal memory were significantly positively correlated with the kinds of leisure experiences in patients with BP. A hierarchical regression analysis accounting for confounding factors showed that verbal fluency and memory were associated with the kinds of leisure experiences. Neither years of education nor resilience were significantly associated with neuropsychological scores. Various leisure experiences in patients with BP are associated with higher language-related cognitive functioning. Engaging in various leisure experiences may affect higher cognitive functions related to language.

Psychometric Properties of the Turkish Version of the Activity Diversity Questionnaire for Older Adults

INTRODUCTION

The Activity Diversity Questionnaire consists of 20 items that assess activity diversity using Shannon's entropy. Comparing the relationship between health outcomes and activity diversity is important for older adults. There is no scale in Turkish that can be used to evaluate the activity diversity. The aim of this study is to investigate the relevance of the Activity Diversity Questionnaire for Turkish older adults and the effectiveness of its clinical use.

METHODS

220 older adults were included in the study. In order to determine the reliability of the Activity Diversity Questionnaire, internal consistency and test-retest analyzes were applied. Similar scale validity and confirmatory factor analysis were used to determine its validity.

RESULTS

The Turkish version of the Activity Diversity Questionnaire showed high levels of internal consistency and test-retest reliability (Cronbach α = 0.868, ICC = 0.93). Statistically positive, moderate (r = 0.47, p < .001) and strong (r = 0.71, p < .001) correlations were found between the Activity Diversity Questionnaire and the Barthel Activities of Daily Living Index and the Lawton Instrumental Activities of Daily Living Scale, respectively. As a result of Confirmatory Factor Analysis, it was found that the fit index values found acceptable fit compared to the reference values.

CONCLUSIONS

The Turkish version of the Activity Diversity Questionnaire has appropriate psychometric properties, including validity and reliability.

Longitudinal change in daily stress across 20 years of adulthood: Results from the national study of daily experiences

This study examined age-related patterns in exposure and affective reactivity to daily stressors across a 20-year time span among adults who were between 22 and 77 years old at their baseline interview. Longitudinal data from the National Study of Daily Experiences (NSDE) consisted of three bursts of eight consecutive nightly interviews of stress and affect. Analyses made use of all available data from a U.S. National sample of respondents who participated in any of the three NSDE bursts (N = 2,845; number of daily assessments = 33,688). Findings revealed increasing age-related benefits. Younger adults (< 30 years) reported the highest levels of stressor exposure and reactivity, but their stress profile improved with age. Over time, adults averaged an 11% reduction in the occurrence of stressor days, and the younger adults exhibited an even steeper decline (a 47% reduction) in their levels of stressor reactivity. For people in midlife and old age, stressor occurrence continued to decrease over time, yet among adults aged 54 years or older at baseline, stress reactivity remained stable across time. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Connecting and feeling: Associations between social factors and emotions in nine countries

We aimed to explore the distribution of positive and negative emotions across nine low-, middle- and high-income countries; and the association between social factors and these emotions. Data were drawn from the SAGE and the COURAGE studies, with 52,553 participants. Emotions were assessed through the day reconstruction method.Sociodemographic characteristics and social factors were also measured. Multiple linear regressions were performed. Finland, China and African countries showed significantly lower scores on the negative emotions, whereas positive emotions were more homogeneous across countries. Loneliness was positively associated with negative emotions and negatively associated with positive ones; frequent social participation was related with higher scores in positive emotions; and lower trust with higher levels of feeling rushed, irritated, depressed and less calm. The extent to which each emotion was felt varied across countries, but there seems to exist an association of social factors with the emotions.

Activity diversity is associated with the prevention of frailty in community-dwelling older adults: The Otassha Study

Introduction

A prior study showed an association between diversity in daily activities (type, frequency, evenness) and frailty in older adults. However, the causality of this relationship is unclear. Therefore, this study aimed to clarify the relationship between activity diversity and frailty through a 2-year longitudinal study conducted among community-dwelling older adults.

Methods

We evaluated data from the 2018 and 2020 waves of the Otassha Study. Frailty was assessed using the Cardiovascular Health Study criteria, with pre-frail and frail participants defined as frail and the other participants categorized into the robust group. We enrolled a total of 207 participants who were not frail at baseline. Activity type, frequency, and evenness scores were calculated using an Activity Diversity Questionnaire. The association between each activity diversity score and the incidence of frailty was evaluated using logistic regression modeling (each diversity score was entered the model after Z-transformation).

Results

Of the 207 enrolled participants (median age, 73 years; age range, 65-91 years; 60.4% women), 64 (30.9%) had incident frailty during the follow-up period. A logistic regression analysis adjusting for sociodemographic and psychosomatic factors revealed odds ratios for activity type and evenness scores of 0.64 and 0.61, respectively (P < 0.05). These factors were significantly associated with the incidence of frailty.

Discussion

Activity type and evenness (except frequency) within daily activities were predictors of frailty during 2 years of follow-up. Engagement in diverse activities appears to be more effective in preventing frailty than does engagement in a few activities.

Capturing Hassles and Uplifts in Adolescents' Daily Lives: Links with Physical and Mental Well-Being

Despite the salient impacts of daily experiences, scarce research has measured various daily minor experiences and evaluated their influences on adolescent well-being in their daily life. This study assessed the exposure to multiple aspects of daily hassles and uplifts in adolescents' daily lives, and examined the links between the level, types, and diversity of these exposures and adolescents' daily physical and mental well-being. Ninety-nine adolescents (12-17 years old, M = 14.6, 51.5% White, 53.5% female) completed a 30-day daily diary study. Multilevel modeling revealed different associations between the level and types of daily hassles and uplifts and adolescent well-being on the same day. Experiencing diverse daily hassles was linked with more emotional problems, and experiencing diverse daily uplifts was related with lower negative affect. The findings underscore the importance of including level, types, and diversity of both daily hassles and uplifts in research to better characterize adolescents' daily experiences. The findings also highlight the concurrent and potential cumulative effects of daily minor social events and mundane experiences in adolescent development in their daily lives.

Psychosocial Outcomes of Age Integration Status: Do Age-Integrated Social Networks Benefit Older Adults?

Increased longevity means that older adults have more opportunities to have age-integrated social networks, which include both same-aged peers and intergenerational social ties. Compared to those with peer-only, or intergenerational-only social networks, those with age-integrated networks may experience greater psychosocial benefits due to the age-diverse nature of their social networks. Data from the National Health and Aging Trends Study was used to examine age integration status associations with well-being and social engagement in a nationally representative sample of Medicare beneficiaries in the United States. We hypothesized that age-integrated older adults have greater well-being and social engagement than older adults with peer-only or intergenerational-only networks. Weighted ordinary least squares regression analyses were conducted to test associations of well-being and social engagement with age integration status, controlling for sociodemographic and health covariates. Older adults with age-integrated social networks did not differ in well-being from those with peer-only or intergenerational-only networks, although they had greater social engagement than those with intergenerational-only networks.

Aging and Psychological Well-Being: The Possible Role of Inhibition Skills

(1) Background: Psychological well-being (PWB) is a multidimensional construct which is a key protective factor against chronic diseases in older adults. Numerous psychological and cognitive factors can influence older people’s PWB. However, while most studies have explored the effect of general cognition, only a few investigated the role of specific cognitive functions such as the efficiency of executive functions. Thus, the present study aimed to directly explore the relationships between PWB, age, and the core executive functions (namely working memory, flexibility, and inhibition). (2) Methods: A sample of 51 healthy older adults (age range: 60–88) were enrolled and tested both for PWB (by Ryff’s psychological well-being scale) and the core executive functions (by the Digit span backward, the Trail Making Test, and the Stroop test). (3) Results: Age and inhibitory skills are negatively correlated to the personal growth subscale of the PWB scale. Moreover, a hierarchical regression analysis showed that inhibition, but not working memory and flexibility, predicted the sense of continued growth and development (personal growth) of older adults, even after controlling for age and educational levels. Limitations and implications for future research and prevention interventions are discussed.

Diversity of daily activities is associated with greater hippocampal volume

Greater engagement in a range of daily activities is associated with better cognitive functioning (Lee et al., Lee et al., 2020). The hippocampus, a subcortical brain structure implicated in learning, memory, spatial navigation and other aspects of cognitive functioning, may be structurally sensitive to exposure to and engagement with novel experiences and environments. The present study tested whether greater activity diversity, defined as the range of common daily activities engaged in and the proportion of time spent in each, is associated with larger hippocampal volume. Greater diversity of activities, as measured using daily diaries across an 8-day period, was related to greater hippocampal volume averaged across the left and right hemispheres, even when adjusting for estimated intracranial volume, total activity time, sociodemographic factors, and self-reported physical health. These findings are broadly consistent with nonhuman animal studies, demonstrating a link between enriched environments and structural changes to the hippocampus. Future longitudinal and experimental work can elucidate causal and directional relationships between diversity of daily activities and hippocampal volume.

Friendships in Old Age: Daily Encounters and Emotional Well-Being

OBJECTIVES

Having friends in old age is linked to higher levels of happiness and life satisfaction. Yet, we know little about older adults' emotional experiences when they encounter friends throughout the day. This study examined whether older adults reported (a) more pleasantness, (b) fewer conversations about stressful experiences, and (c) better mood when they had contact with friends compared to when they had contact with other social partners or were alone throughout the day. We also examined whether these experiences varied by the friendship closeness.

METHOD

Adults aged 65+ (n = 313) from the Daily Experiences and Well-being Study provided background information and listed and described their close social partners. Participants then completed ecological momentary assessment (EMA) surveys every 3 hr for 5 to 6 days where they reported their encounters with social partners, rated the pleasantness and indicated whether they discussed stressful issues during these encounters, and rated positive and negative mood.

RESULTS

Multilevel models revealed that encounters with friends were more pleasant and were associated with fewer discussions about stressful experiences compared to encounters with romantic partners or family members throughout the day. Encounters with friends were also associated with better mood, though this link only held for encounters with friends who were not considered close.

DISCUSSION

Findings are discussed in terms of functionalist theory, socioemotional selectivity theory, relationship ambivalence, and the benefits of less close ties. This work facilitates the understanding of how daily contact with friends can promote older adults' emotional well-being.

Longitudinal Stability of Work-Family Enrichment and its Association with Well-Being and Personality Traits

Are higher levels of work-family enrichment a consequence or manifestation of certain personality traits and individuals' psychological functioning? Using random intercept cross-lagged panel models, this study examined the hypothesized stability of work-to-family enrichment (WFE) and family-to-work enrichment (FWE) over two 10-year intervals, the extent to which the within-person changes of WFE and FWE are associated with personality traits and psychological well-being (PWB), and possible gender differences. In this 20-year, longitudinal data analysis of employed adults (N=535), results indicated the robust nature of the stability of WFE/FWE. Our results suggest that personality traits were not associated with within-person change for either WFE or FWE, but PWB was associated with within-person change. Theoretically and conceptually, our findings provide strong evidence that work-family enrichment is not simply an "optimistic worldview" created by personality and well-being. The within-person results lend strong evidence that interventions that improve psychological well-being will also enhance work-family enrichment.

Change Is Good for the Brain: Activity Diversity and Cognitive Functioning Across Adulthood

OBJECTIVES

Participating in a variety of daily activities (i.e., activity diversity) requires people to adjust to a variety of situations and engage in a greater diversity of behaviors. These experiences may, in turn, enhance cognitive functioning. This study examined associations between activity diversity and cognitive functioning across adulthood.

METHOD

Activity diversity was defined as the breadth and evenness of participation in seven common daily activity domains (e.g., paid work, time with children, leisure, physical activities, volunteering). Participants from the National Survey of Daily Experiences (NSDE: N = 732, Mage = 56) provided activity data during eight consecutive days at Wave 1 (W1) and Wave 2 (W2) 10 years apart. They also provided cognitive data at W2.

RESULTS

Greater activity diversity at W2 was associated with higher overall cognitive functioning and higher executive functioning at W2. Individuals who increased activity diversity from W1 to W2 also exhibited higher scores in overall cognitive functioning and executive functioning at W2. Overall cognitive functioning, executive functioning, and episodic memory were better in those who had higher activity diversity at both waves, or increased activity diversity from W1 to W2, compared to those who had lower activity diversity or decreased activity diversity over time.

DISCUSSION

Activity diversity is important for cognitive health in adulthood. Future work can study the directionality between activity diversity and cognitive functioning and underlying social and neurological mechanisms for these associations.

Sibling relationship quality in the context of digital leisure and geographic distance for college-attending emerging adults

During the transition to adulthood, emerging adults may experience new geographic distance separating them from their siblings. Digital leisure is common among emerging adults and may serve as a tool for maintaining relationship quality across geographic distance. Using qualitative data, we created individual digital leisure diversity scores for four categories of digital leisure identified from a constructed taxonomy. The sample included 185 college-attending emerging adults (M age = 20.1, 64.3% male). Analysis of variance indicated dyadic gender differences in social media and gaming. Digital leisure diversity was associated with greater levels of affective and cognitive sibling relationship quality, regardless of sibling dyad gender. The association between digital leisure diversity and cognitive relationship quality was significant for participants who lived closer to their sibling. During the transition to adulthood when new geographic separation is common, digital leisure shows potential as a compensatory activity that may help siblings maintain relationship quality.

Time-Use and Mental Health in Older Adults: A Scoping Review

Time-use of older adults can be different than in earlier life, especially during the transition from pre- to post-retirement or after experiencing major life events, and the changes could affect their mental health. However, the extent and nature of such research in gerontology have not been examined to date. Therefore, this scoping review sought to map the literature on time-use and mental health in the older population to examine the extent and nature of those research activities. A scoping review was conducted using four databases-PubMed, Scopus, CINAHL, and EMBASE according to PRISMA guidelines. Data were extracted using a pretested tool to develop a descriptive analysis and thematic summary. A total of 11 articles met the eligibility criteria. Seven out of 11 studies involved cross-sectional design, while the remainder were longitudinal studies. The longitudinal studies mainly were secondary data analysis. Time-use data were mainly collected using daily diaries, and the most common mental health outcome included was depression. Only two studies did not evaluate the direct relationship between time-use and mental health. Our review has revealed studies evaluating time-use and mental health in older adults. Limitations of review and recommendations for future studies are discussed.

The Relations of Social Network Types With Mental Distress Among Older Korean Americans: The Interactive Role of Living Arrangement

The purpose of this study is to identify social network types in older Korean Americans and to examine their direct associations, as well as interactions with living arrangement, on mental distress. Drawn from the Study of Older Korean Americans (SOKA), participants were aged 60 or over and lived in five states. Analyses included 2,140 cases surveyed during 2017-2018. To identify social network types, latent profile analyses were conducted using 10 network-related criterion variables. A model with five social network types was identified as best fit. The groups were labeled as diverse, moderately diverse, family deficit, friend deficit, and restricted. As hypothesized, greater mental distress was associated with belonging to more deprived networks such as family deficit and restricted groups. Interaction effects also suggest that members of the restricted group were more distressed when they lived alone than when they lived with others. Implications based on the results are discussed.

Daily prosocial activities and well-being: Age moderation in two national studies

Prosocial activities, such as volunteering, predict better mental and physical health in late adulthood, but their proximal links to well-being in daily life are largely unknown. The current study examined day-to-day associations of prosocial activities with emotional and physical well-being, and whether these associations differ with age. We used daily diary data from the National Study of Daily Experiences (NSDE) II (n = 2,016; ages 33-84) and NSDE Refresher Study (n = 774; ages 25-75). Participants completed telephone interviews on 8 consecutive evenings regarding their prosocial activities (formal volunteering, providing unpaid assistance, providing emotional support), well-being (negative affect, stressors, positive events), and physical symptoms. On days when individuals participated in more formal volunteering or provided more unpaid assistance than usual, they experienced more stressors and positive events but no difference in the number of physical symptoms. Negative affect was reduced on volunteering days for older adults but increased for younger adults (NSDE Refresher). Providing emotional support was associated with higher same-day negative affect, more stressors, more positive events, and elevated physical symptoms. Compared to younger and middle-aged adults, older adults experienced less of an increase in stressors and positive events (NSDE II) and negative affect (NSDE Refresher) on days when they provided more emotional support than usual. These findings demonstrate that prosocial activities are associated with both costs (negative affect, stressors, physical symptoms) and benefits (positive events) for same-day well-being. Older age may protect against negative ramifications associated with prosocial activities. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Variety Is the Spice of Late Life: Social Integration and Daily Activity

OBJECTIVES

Social integration (involvement with a diverse array of social ties) has been linked to positive outcomes including better physical health. Research has not investigated whether encounters with diverse social ties enhance individuals' daily behaviors. The objectives of this study were to assess whether social ties connect individuals to more diverse daily behaviors, physical activity, and nonsedentary time as well as more positive mood.

METHOD

Older adults (aged 65+, n = 313) provided information about their 10 closest social ties. Then they completed ecological momentary assessment (EMA) surveys every 3 hr for 5-6 days where they reported on social encounters and behaviors. They also wore Actical accelerometers to objectively measure physical activity.

RESULTS

Multilevel models revealed that encounters with a greater variety of social ties was associated with engaging in a greater variety of behaviors, more objectively measured physical activity, and a smaller proportion of time spent sedentary. Encounters with weak ties/peripheral social ties accounted for this increased activity (compared to being alone or with close friends or family). Moreover, involvement with diverse ties or diverse behaviors was associated with better mood.

DISCUSSION

Findings are discussed in terms of social engagement theory, network diversity, and the benefits of weak ties.

Same old, same old? Age differences in the diversity of daily life

Some research suggests that compared with younger adults, older adults have more homogeneous, less diverse daily life experiences because everyday situations and activities become increasingly stable and routine. However, strong empirical tests of this assumption are scarce. In two complementary studies, we examined whether older age is associated with less diversity in daily life experiences (e.g., regarding social interaction partners, activities, and places across and within days) and, if so, to what extent health limitations account for these age differences. In Study 1, we used daily diaries to investigate diversity across days among younger (N = 246; Mage = 21.8 years, SD = 2.5) and older adults (N = 119; Mage = 67.7 years, SD = 5.3). In Study 2, we investigated diversity within days employing experience sampling methods over three weeks in an adult life span sample (N = 365; range = 14-88 years). Results showed that across and within days, the daily lives of older adults were less diverse regarding their social interaction partners. Yet, older adults reported more diversity in activities within days and across days in the afternoons, whereas younger adults reported less diverse activities partly due to working or studying more often. Age differences remained statistically significant when controlling for health limitations. We conclude that age differences in the diversity of daily life are nuanced, depending on the domain and the level of analysis. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Reliability and Validity of the Activity Diversity Questionnaire for Older Adults in Japan

Recent research has suggested that the breadth and evenness of activity and activity diversity contribute to health outcomes among older adults. However, few established assessment tools for activity diversity have been developed. This study developed an Activity Diversity Questionnaire (ADQ) for older adults through expert consultation and a preliminary survey among 18 community-dwelling older adults. The diversity score was calculated according to Shannon’s entropy. In study 1, the intraclass correlation coefficients (ICC) of the diversity scores were determined for community-dwelling older adults (n = 30). In study 2, concurrent validity was tested with participants receiving comprehensive health checkups at the Itabashi ward in Japan in 2018 (n = 766). The correlation coefficients of the diversity scores were then calculated in reference to the Tokyo Metropolitan Institute of Gerontology Index of Competence and Japan Science and Technology Agency Index of Competence. The final version of the ADQ consisted of 20 total items with excellent test-retest reliability (ICC = 0.84) and moderate correlations with both the Tokyo Metropolitan Institute of Gerontology Index of Competence and Japan Science and Technology Agency Index of Competence (r = 0.48 and 0.60, respectively). The ADQ was developed through scientific procedures and revealed sufficient reliability and validity. As such, it is a scientifically validated tool for assessing activity diversity among older adults.

Rethinking Leisure Time Use Metrics: Greater Diversity in Shared Sibling Leisure is Associated with Higher Relationship Quality during Emerging Adulthood

Leisure diversity-the total number of unique leisure categories shared within a sibling dyad-may vary according to sibling characteristics (e.g. sibling gender, age difference) and predict sibling relationship quality. Using triangulated lists, brief narratives, and focus groups, we constructed a taxonomy of shared sibling leisure in emerging adulthood and then calculated individual leisure diversity scores. The sample (N=185) included college-attending emerging adults with an average age of 20.1 years old (35.7% female). Taxonomic analysis suggested 19 categories of shared sibling leisure. ANOVAs indicated differences by dyadic gender composition in endorsement rates of select leisure categories and average levels of leisure diversity (lowest for mixed gender dyads). Greater shared leisure diversity was associated with higher levels of affective (sister-sister dyads) and cognitive relationship quality (sister-sister and mixed gender dyads). The association of leisure diversity with sibling relationship quality was strongest for sister-sister dyads and not significant for brother-brother dyads. Sibling dyads that include a sister are more likely to be impacted by level of shared leisure diversity. The results of this study introduce leisure diversity as a metric for quantifying sibling leisure and support its potential as a means for understanding and impacting sibling relationship quality in emerging adulthood.

What's not fair about work keeps me up: Perceived unfairness about work impairs sleep through negative work-to-family spillover

This study examined whether perceived unfairness about work was linked to midlife workers' insomnia symptoms over time, and if the association was mediated by negative work-to-family spillover (NWFS). We used 3 waves of longitudinal data across 20 years from the Midlife in the United States Study (N = 971, M_age = 40.52). Results revealed that, wave-to-wave increases in perceived unfairness about work predicted wave-to-wave increases in NWFS over 20 years. Wave-to-wave increases in NWFS, in turn, predicted wave-to-wave increases in insomnia symptoms. Perceived unfairness about work was indirectly, but not directly associated with insomnia symptoms through NWFS. These within-person indirect mediation pathways were found after controlling for sociodemographic and family characteristics, work hours, neuroticism, physical health, and between-person associations between perceived unfairness about work, NWFS, and insomnia symptoms. These findings suggest that perceived unfairness about work may degrade workers' sleep health over time, through the spillover of work stress to the personal domain.

Control diversity: How across-domain control beliefs are associated with daily negative affect and differ with age

Domain-specific control beliefs typically buffer the influence stressors have on people's negative affect (affective stressor reactivity). However, little is known about the extent to which individuals' control beliefs vary across stressor types and whether such stressor-related control diversity is adaptive for affective well-being. We thus introduce a control diversity construct (a person-level summary of across-domain control beliefs) and examine how control diversity differs with age and relates to negative affect and affective stressor reactivity. We apply a multilevel model to daily diary data from the National Study of Daily Experiences (NSDE; N = 2,022; mean age = 56 years; 33-84; 57% women). Our findings indicate that above and beyond average control beliefs, people whose control is spread over fewer stressor domains (less control diversity) have lower negative affect and less affective stressor reactivity. Older adults are more likely than younger adults to have their control beliefs concentrated in one domain. Additionally, associations between control diversity and negative affect and affective stressor reactivity were age invariant. Moderation effects indicated that when people with low average control beliefs are faced with stressors, having control beliefs focused on fewer domains rather than spread broadly across many domains is associated with less negative affect. Our findings suggest that control diversity provides unique insights into how control beliefs differ across adulthood and contribute to affective well-being. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Emodiversity and biomarkers of inflammation

There is growing evidence that inflammatory responses may help to explain how emotions get "under the skin" to influence disease susceptibility. Moving beyond examination of individuals' average level of emotion, this study examined how the breadth and relative abundance of emotions that individuals experience-emodiversity-is related to systemic inflammation. Using diary data from 175 adults aged 40 to 65 who provided end-of-day reports of their positive and negative emotions over 30 days, we found that greater diversity in day-to-day positive emotions was associated with lower circulating levels of inflammation (indicated by IL-6, CRP, fibrinogen), independent of mean levels of positive and negative emotions, body mass index, anti-inflammatory medications, medical conditions, personality, and demographics. No significant associations were observed between global or negative emodiversity and inflammation. These findings highlight the unique role daily positive emotions play in biological health. (PsycINFO Database Record

Fusing Biodiversity Metrics into Investigations of Daily Life: Illustrations and Recommendations With Emodiversity

Objectives

Functionalist emotion and ecological systems theories suggest emodiversity-the variety and relative abundance of individuals' emotion experiences-is beneficial for psychological and physical health and may change with age. This paper examines and provides recommendations for operationalization of diversity-type intraindividual variability (IIV) constructs using intensive longitudinal data, and demonstrates the utility of emodiversity by examining its links to physical health moderated by mean levels of emotion and age.

Method

Using data from a daily diary study of 138 adults (age 40 to 65 years), we consider how item selection, response scale, choice of diversity index, and number of occasions enable/constrain mapping to theory, measurement reliability, and empirical inquiry.

Results

Item selection and response scale had limited influence on rank-order differences in diversity. Reliable measurement (r ≥ .8) required a minimum of 6 to 12 occasions depending on choice of index, theoretical conception, study design, and distribution of diversity scores. The empirical findings suggest mean level of negative affect, rather than age, moderates the relation between negative emodiversity and health.

Discussion

This study provides recommendations for the calculation of diversity-type IIV constructs and illustrates the potential for study of emodiversity to contribute to understanding of successful aging.

Time Perspective and Age: A Review of Age Associated Differences

We investigate the relationship between age and the five dimensions of time perspective measured by the Zimbardo Time Perspective Inventory (ZTPI) (past negative, past positive, present hedonistic, present fatalistic, and future). Time perspective is related to well-being, decision-making, level of development, and many other psychological issues. Hence, the existence of a systematic relationship between time perspective and age should be considered in all studies for which time is a relevant variable. However, no specific research about this has been conducted. We collected 407 papers that referenced the ZTPI between 2001 and 2015. From those, 72 studies met our inclusion criteria. They included 29,815 participants from 19 countries whose age spans most phases of adulthood (from 13.5 to 75.5 years, mean 28.7). We analyzed these studies adapting meta-analytical techniques. We found that present hedonistic and past negative dimensions are negatively related to aging with partial eta squared effect sizes of roughly 0.15. Our results have implications for the design of studies related to time as our findings highlight the importance of taking into account the differences associated with age.