Jing Luo

Northwestern University | NU · Feinberg School of Medicine

Personality has been found to contribute to individual differences in health and aging. In search of the underlying mechanisms, health behavior and stress have been shown to play roles in the personality-health association. However, given the evidence that personality traits are dynamic within individuals, it remains unclear how the dynamic intrain...

Psychosocial factors, including individual factors (e.g., personality, sense of purpose), contextual factors (e.g., employment status), and stress-related experiences, have been demonstrated as important protective/risk factors of health. However, little is known about the processes and mechanisms linking these factors to health and aging. The curr...

Stress experiences have been found to vary at both the interindividual and intraindividual levels. The present study investigated the concurrent and longitudinal associations between values and stress at both the between-person and the within-person levels. We considered multiple aspects of stress, including self-reported stressor exposure and perc...

Lifespan developmental theories suggest age-related shifts in motivation, cognition, emotion regulation, and stressor experience lead to changes in mean levels of negative and positive affect across the lifespan. The present research used coordinated data analysis to examine mean-level affective trajectories in 186,752 participants ranging from 11–...

Loneliness is a pervasive experience with adverse impacts on health and well-being. Despite its significance, notable gaps impede a full understanding of how loneliness changes across the adult life span and what factors influence these changes. To address this, we conducted a coordinated data analysis of nine longitudinal studies encompassing 128,...

Objectives Loneliness and social isolation are major public health concerns among older adults in Japan. Generativity, the concern for and commitment to future generations, may buffer older adults from loneliness. This study examined the cross-sectional and longitudinal associations between generativity and social asymmetry (the discrepancy between...

Insufficient social connection in older adulthood is a growing public health concern. Current research suggests that loneliness and social isolation are related to consequential health outcomes in later life. There is a large and growing literature suggesting that loneliness and social isolation are associated with increased risk of dementia and mo...

Lifespan developmental theories suggest age-related shifts in motivation, cognition, emotion regulation, and stressor experience lead to changes in mean levels of negative and positive affect across the lifespan. The present research used coordinated data analysis to examine mean-level affective trajectories in 186,752 participants ranging from 11-...

Extensive evidence has been found for the associations between personality traits and health. However, it remains unknown whether the relationships between personality and health show differential patterns across different life stages. The current research examined how the associations between the levels of and changes in the Big Five personality t...

There has been longstanding and widespread interdisciplinary interest in understanding intergenerational processes, or the extent to which conditions repeat themselves across generations. However, due to the difficulty of collecting longitudinal, multigenerational data on early life conditions, less is known about the extent to which offspring expe...

Background: Substance use severity is frequently measured using generic (i.e., non-drug specific) items. Yet, the measurement properties of these items must be evaluated for measurement invariance across inidividuals who use differing substances to ensure total scores can be compared across groups. Method: This study used data from two independe...

The graded forced-choice (FC) format has recently emerged as an alternative that may preserve the advantages and overcome the issues of the dichotomous FC measures. The current study presented the first large-scale evaluation of the performance of three types of FC measures (FC2, FC4 and FC5 with 2, 4 and 5 response options, respectively) and compa...

Some people use health care services more than others. Identifying factors associated with health care use has the potential to improve the effectiveness, efficiency, and equity of health care. In line with the Andersen behavioral model of health care utilization and initial empirical findings, personality traits may be key predisposing factors ass...

Oblique bifactor models, where group factors are allowed to correlate with one another, are commonly used. However, the lack of research on the statistical properties of oblique bifactor models renders the statistical validity of empirical findings questionable. Therefore, the present study took the first step to examine the statistical properties...

Some people use healthcare services more than others. Identifying factors associated with healthcare use has the potential to improve the effectiveness, efficiency, and equity of healthcare. In line with the Andersen behavioral model of healthcare utilization and initial empirical findings, personality traits may be key predisposing factors associa...

Objective: Loneliness in the aging population is associated with decreased cognitive function and increased neuropathology; less is understood about the association of loneliness and cognitive resilience, defined as the discordance between a person's actual and expected cognition given their neuropathology. Here we assess the effect of loneliness...

Objective: One large focus of personality psychology is to understand the biopsychosocial factors responsible for adult personality development and well-being change. However, little is known about how macro-level contextual factors, such as rurality-urbanicity, are related to personality development and well-being change. Method: The present st...

Loneliness in the aging population is a concern, as increased loneliness is associated with decreased cognitive function and increased neuropathology. Less is understood about the relationship between loneliness and cognitive resilience. Cognitive resilience is defined as the discordance between a person’s actual and expected cognition given their...

The current research examined how the associations between the level and changes in the Big Five personality traits and different types of health outcomes (self-rated, physical, cognitive, and physiological health outcomes) differ across ages over the lifespan (Sample 1, age range: 15-100) and during the aging process (Sample 2, age range: 50-109)...

Exposure to stressors in childhood is theorized to sensitize individuals to stressors experienced later in life. One way that stress sensitization might manifest is through greater affective reactivity to daily stressors. In turn, greater affective reactivity to daily stressors has been associated with poorer health and increased mortality risk. Th...

Intro: The current study examined the effects of adulthood socioeconomic status (SES) on levels and changes in the Big Five personality traits domains and nuances in adulthood and during aging. We also tested whether the relations between adulthood SES and personality traits differed by childhood SES and age. Methods: Data were drawn from three...

Underutilization of mental health services is prevalent in the U.S., and an understanding of utilization patterns can inform interventions to enhance treatment use. The current study investigated longitudinal associations between changes in mental health care utilization (MHCU) and Big Five personality traits. Data included three waves (4,658 adult...

Stress exposure and stress reactivity may be potent factors associated with increased risk of dementia. The 2017 Lancet Commission on Dementia and its 2020 update reviewed modifiable risk factors associated with dementia, but stress was not addressed directly. The present study provides a focused review of the association between stress and dementi...

The current study presented the first meta-analytic review on the associations between the Big Five personality traits and stress measured under different conceptualizations (stressor exposure, psychological and physiological stress responses) using a total of 1,575 effect sizes drawn from 298 samples. Overall, neuroticism was found to be positivel...

Personality traits and physical health both change over the lifespan. Theoretical models and empirical evidence suggest that these changes are related. The current study investigated the dynamic relations between personality traits and physical health at both the between-person and the within-person levels. Data were drawn from three longitudinal s...

Theoretical and empirical evidence suggests the existence of a general perceived stress factor overarching different life domains. The present study investigated the general perceived stress relative to domain-specific perceived stress as predictors of 26 diverse health outcomes, including mental and physical health, health behaviors, cognitive fun...

Recent work has shown the importance of studying loneliness and social isolation across adulthood for understanding healthy aging. This project explored loneliness trajectories across multiple independent samples. Using coordinated IDA, we estimated and meta-analyzed identical multilevel growth models in loneliness using three samples (ELSA, SHARE,...

The bifactor model is a promising alternative to traditional modeling techniques for studying the predictive validity of hierarchical constructs. However, no study to date has systematically examined the influence of cross-loadings on the estimation of regression coefficients in bifactor predictive models. Therefore, we present a systematic examina...

Objectives Theoretical and empirical evidence suggests the existence of a general perceived stress factor overarching different life domains. The present study investigated the general perceived stress relative to domain-specific perceived stress as predictors of 26 diverse health outcomes, including mental and physical health, health behaviors, co...

Cumulative evidence has been found for the associations between personality traits and stress experiences in adulthood. However, less is known about the moderating mechanisms underlying these associations. The present study tested whether the stress sensitization and stress inoculation hypotheses could be applied to the relationship between early a...

There are individual differences in the rates of cognitive decline across later adulthood. Personality traits are among the factors that may account for these differences. The current project investigated whether personality traits were associated with trajectories of cognitive decline, and whether the associations were different before and after d...

The Big Five Inventory-2 (BFI-2) has received wide recognition since its publication because it strikes a good balance between content coverage and brevity. The current study translated the BFI-2 into Chinese, evaluated its psychometric properties in four diverse Chinese samples (college students, adult employees, adults treated for substance use,...

Negatively worded items (NWIs) have been found to distort the hypothesized one-factor structure of many unidimensional scales and an additional negative wording factor is needed to achieve adequate model fit. However, little is known about impact, dimensionality, and correlates of the negative wording factor for multidimensional scales. Using respo...

Introduction: Hormones may be one possible mechanism underlying sex differences in dementia incidence. We examined whether presumed differential prenatal hormone milieu is related to dementia risk by comparing dementia rates in same- and opposite-sex dizygotic twin pairs in male and female twins. Methods: The sample comprised 43,254 individuals...

We conducted two experimental studies with between-subjects and within-subjects designs to investigate the item response process for personality measures administered in high- versus low-stakes situations. Apart from assessing measurement validity of the item response process, we examined predictive validity; that is, whether or not different respo...

Much research has examined the interplay of depression and self-esteem in an effort to determine whether depression causes self-esteem (scar model), or vice versa (vulnerability model). In the current longitudinal study (N = 2,318), we tested whether neuroticism served as a confounding variable that accounted for the association of depression and s...

The present study examined the genetic and environmental etiology underlying the Big Five personality traits and perceived stress, concurrently and longitudinally. In study 1, we used the twin sample from the National Longitudinal Study of Adolescent to Adult Health (Add Health IV) data. The results indicated that about 70% of the association betwe...

The current meta-analysis investigated the extent to which personality traits changed as a result of intervention, with the primary focus on clinical interventions. We identified 207 studies that had tracked changes in measures of personality traits during interventions, including true experiments and prepost change designs. Interventions were asso...

Most previous research has focused on the relationships between specific personality traits and specific facets of mental health. However, in reality most of the Big Five are associated at non-trivial levels with mental health. To account for this broad correlation, we proposed the ‘barometer hypothesis’, positing that behind both ratings of mental...

In the present study we tested the inoculation hypothesis of the effect of conscientiousness on health. We tested the inoculation hypothesis using both cross-sectional and longitudinal methods. We used a representative sample of US citizens (N=. 2136 for Wave 1 and N=. 1170 for Wave 2), which completed the Chernyshenko Conscientiousness Scales, Per...

Many current measures of eating disorder (ED) symptoms have 1 or more serious limitations, such as inconsistent factor structures or poor discriminant validity. The goal of this study was to overcome these limitations through the development of a comprehensive multidimensional measure of eating pathology. An initial pool of 160 items was developed...