Personality Trait Change in Adulthood

On the Willingness to Pay for social media/messenger services taking into account personality and sent/received messages among WhatsApp users

WhatsApp has billions of users worldwide. Instead of paying a subscription fee, users provide their data for the use allowance. This data is used by Meta - the company behind WhatsApp - to obtain insights into user characteristics and monetize those insights. However, this data business model is among others criticized for fostering a loss of privacy that arises when platforms analyze user data, and for the use of design elements to attract users to the platform when they are not online or to extend their online time. Therefore, an increasing number of scientists are discussing whether other payment models are needed to overcome those disadvantages, like a monetary payment model. However, users would probably only pay for improved social media products. This paper provides an empirical basis for understanding the user perspective and, in particular, whether and how much users are willing to pay for improved social media products. For this, 2924 WhatsApp users' perspectives on this topic were investigated. They were asked whether and how much they are willing to pay money for a messenger/social media service when its quality would be improved. Variables potentially influencing Willingness to Pay (i.e., personality, sent/received messages) were studied as well. 47% of the participants were unwilling to pay for a healthier messenger service, and about a quarter were willing or stayed neutral. Further analysis revealed that more agreeable people were more willing to pay. Further: Higher Extraversion was associated with more sent/received messages, but the number of sent/received messages was not linked to Willingness to Pay. The present study shows that many users still are not willing to pay for social media (here messengers), which indicates that the advantages of paying for social media with money instead of with one's own data might need to be better communicated.

Personality Functioning, Problems in Living, and Personality Traits

The publication of the Alternative Model of Personality Disorder (AMPD) was a signpost achievement in the personality assessment. However, research on the AMPD has generally not led to either a deeper understanding of personality disorder or personality assessment or new ideas about how to provide better care for people with personality disorder diagnoses. A significant portion of research has focused on narrow issues and appears to be driven in part by ideological differences between scholars who prefer Criterion A (personality functioning) or Criterion B (maladaptive traits). I trace these issues to ambiguity about the concept of personality functioning as defined in the AMPD and its conceptual distinction from personality traits and problems in living. In this paper, I reground these concepts in coherent and distinct definitions, elaborate upon the implications of their differences, and show how these differences can help clarify and reorient AMPD research to focus on generating clinically useful models for personality pathology and personality assessment.

Roles of negative emotions and personality traits in psoriasis vulgaris: A mendelian randomization study

BACKGROUND

Many studies have indicated that negative emotions and personality traits are related to psoriasis, though few have provided causal evidence.

METHODS

Our analysis utilized 15 genome-wide association study datasets to identify instrumental variables associated with negative emotions, personality traits and psoriasis vulgaris. Two-sample Mendelian randomization was conducted to identify the causal associations of negative emotions and personality traits with psoriasis vulgaris. To mitigate bias from multiple tests, we adjusted p-values using the Benjamini-Hochberg method.

RESULTS

Our study revealed causal links between negative emotions and psoriasis vulgaris, including depressed affect, worry too long, feeling hurt, guilty feelings, mood swings, unenthusiasm, miserableness, fed-up feelings. However, there was no significant evidence of a causal relationship between feeling lonely and psoriasis vulgaris. Additionally, personality traits including neuroticism and openness to experience were found to have causal effects on psoriasis vulgaris. However, no significant evidence supported a causal relationship between agreeableness, conscientiousness, and extraversion with psoriasis vulgaris.

CONCLUSION

Our findings suggest that experiencing negative emotions including depressed affect, worrying excessively, feeling hurt, guilty feelings, mood swings, lack of enthusiasm, miserableness and fed-up feelings may pose risks for psoriasis vulgaris. Additionally, neuroticism is associated with a risk of psoriasis vulgaris. Conversely, the openness trait may serve a protective role against psoriasis vulgaris.

Individual differences in motivation to change in individuals with eating disorders: A systematic review

OBJECTIVE

Motivation to change has been suggested to significantly impact treatment outcomes in eating disorders (EDs). This review will investigate factors associated with motivation to change in EDs with the aim of supporting clinicians to be aware and sensitive to factors that might obstruct recovery and to inform motivation-based interventions.

METHOD

Using PRISMA guidelines, this article identified 24 studies through database searches meeting eligibility criteria. Only correlates of motivation were identified, limiting the ability of this review to identify causal relationships. Factors that changed alongside changes in motivation were identified from longitudinal studies.

RESULTS

This review identified factors such as individual characteristics, co-morbid psychopathology, lack of treatment autonomy and relationships with others to be associated with motivation to change in individuals with EDs. In addition, motivation to change significantly increased alongside self-esteem and identity re-negotiation when measured longitudinally.

DISCUSSION

Motivational interviewing can typically focus on exploring ambivalence to treatment, identifying goals and values, and increasing self-efficacy. However, this review identifies individual and relational factors to be particularly significant and may obstruct recovery from an ED. As such, evidence-based targets have been identified to inform clinicians and motivation-based interventions.

PUBLIC SIGNIFICANCE

Knowledge of factors associated with motivation to change in EDs is important to understand those who may have poorer treatment outcomes. Motivation may be improved by supporting individuals' relationship with others and tailoring interventions according to temperament and personality traits. Utilizing an individual's social support as they enter ED treatment may be effective in maximizing motivation to recover.

Dissecting the surgeon's personality: cross-cultural comparisons in Western Europe

AIM

The surgeon's personality contributes to variation in surgical decision-making. Previous work on surgeon personality has largely been reserved to Anglo-Saxon studies, with limited international comparisons. In this work we built upon recent work on gastrointestinal surgeon personality and aimed to detect international variations.

METHOD

Gastrointestinal surgeons from the UK and the Netherlands were invited to participate in validated personality assessments (44-item, 60-item Big Five Inventory; BFI). These encompass personality using five domains (open-mindedness, conscientiousness, extraversion, agreeableness and negative emotionality) with three subtraits each. Mean differences in domain factors were calculated between surgeon and nonsurgeon populations from normative data using independent-samples t-tests, adjusted for multiple testing. The items from the 44-item and 60-item BFI were compared between UK and Dutch surgeons and classified accordingly: identical (n = 16), analogous (n = 3), comparable (n = 12).

RESULTS

UK (n = 78, 61.5% male) and Dutch (n = 280, 65% male) gastrointestinal surgeons had marked differences in the domains of open-mindedness, extraversion and agreeableness compared with national normative datasets. Moreover, although surgeons had similar levels of emotional stability, country of work influenced differences in specific BFI items. For example, Netherlands-based surgeons scored highly on questions related to sociability and organization versus UK-based surgeons who scored highly on creative imagination (p < 0.0001).

CONCLUSION

In a first cross-cultural setting, we identified country-specific personality differences in gastrointestinal surgeon cohorts across domain and facet levels. Given the variation between Dutch and UK surgeons, understanding country-specific data could be useful in guiding personality research in healthcare. Furthermore, we advocate that future work adopts consensus usage of the five factor model.

Protective factors for children with autism spectrum disorder during COVID-19-related strict lockdowns: a Shanghai autism early developmental cohort study

BACKGROUND

COVID-19 lockdowns increased the risk of mental health problems, especially for children with autism spectrum disorder (ASD). However, despite its importance, little is known about the protective factors for ASD children during the lockdowns.

METHODS

Based on the Shanghai Autism Early Developmental Cohort, 188 ASD children with two visits before and after the strict Omicron lockdown were included; 85 children were lockdown-free, while 52 and 51 children were under the longer and the shorter durations of strict lockdown, respectively. We tested the association of the lockdown group with the clinical improvement and also the modulation effects of parent/family-related factors on this association by linear regression/mixed-effect models. Within the social brain structures, we examined the voxel-wise interaction between the grey matter volume and the identified modulation effects.

RESULTS

Compared with the lockdown-free group, the ASD children experienced the longer duration of strict lockdown had less clinical improvement (β = 0.49, 95% confidence interval (CI) [0.19-0.79], p = 0.001) and this difference was greatest for social cognition (2.62 [0.94-4.30], p = 0.002). We found that this association was modulated by parental agreeableness in a protective way (-0.11 [-0.17 to -0.05], p = 0.002). This protective effect was enhanced in the ASD children with larger grey matter volumes in the brain's mentalizing network, including the temporal pole, the medial superior frontal gyrus, and the superior temporal gyrus.

CONCLUSIONS

This longitudinal neuroimaging cohort study identified that the parental agreeableness interacting with the ASD children's social brain development reduced the negative impact on clinical symptoms during the strict lockdown.

Personality traits and their influence on Echo chamber formation in social media: a comparative study of Twitter and Weibo

The echo chamber effect on social media has attracted attention due to its potentially disruptive consequences on society. This study presents a framework to evaluate the impact of personality traits on the formation of echo chambers. Using Weibo and Twitter as platforms, we first define an echo chamber as a network where users interact solely with those sharing their opinions, and quantify echo chamber effects through selective exposure and homophily. We then employ an unsupervised personality recognition method to assign a personality model to each user, and compare the distribution differences of echo chambers and personality traits across platforms and topics. Our findings show that, although user personality trait models exhibit similar distributions between topics, differences exist between platforms. Among 243 personality model combinations, over 20% of Weibo echo chamber members are "ynynn" models, while over 15% of Twitter echo chamber members are "nnnny" models. This indicates significant differences in personality traits among echo chamber members between platforms. Specific personality traits attract like-minded individuals to engage in discussions on particular topics, ultimately forming homogeneous communities. These insights are valuable for developing targeted management strategies to prevent the spread of fake news or rumors.

Opinion: Which animals have personality?

Human personality generally refers to coherent individuating patterns in affect, behavior, and cognition. We can only observe and measure behavior, from which we then infer personality and other psychological processes (affect, cognition, etc.). We emphasize that the study of personality always explains or summarizes patterns not only in behavior but also in these other psychological processes inferred from behavior. We thus argue that personality should be attributed only to nonhuman animals with behaviors from which we can infer a sufficiently rich set of psychological processes. The mere inference of a biological trait that explains behavioral variability, on our view, is not sufficient to count as a personality construct and should be given a different term. Methodologically, inferring personality in nonhuman animals entails challenges in characterizing ecologically valid behaviors, doing so across rich and varied environments, and collecting enough data. We suggest that studies should gradually accumulate such corpora of data on a species through well-curated shared databases. A mixture of approaches should include both top-down fit with extant human personality theories (such as the Big Five) as well as bottom-up discovery of species-specific personality dimensions. Adopting the above framework will help us to build a comparative psychology and will provide the most informative models also for understanding human personality, its evolution, and its disorders.

Personality traits as predictors for treatment response to sertraline among unmedicated obsessive-compulsive Disorder: A 12-weeks retrospective longitudinal study

The effectiveness of selective serotonin reuptake inhibitors (SSRIs) as a primary treatment for obsessive-compulsive disorder (OCD) remains uncertain. Even after undergoing standard SSRIs treatment, 40%-60% of individuals with OCD persistently endure symptoms. Recent studies proposed that personality traits may influence the diversity of OCD treatment results. Thus, in this retrospective study, we evaluated the Eysenck Personality Questionnaire (EPQ) scores of 51 untreated patients with OCD and 35 healthy controls. The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) was employed to assess OCD symptom severity at weeks 0, 2, 4, 8, and 12 of sertraline treatment. The primary outcome focused on the reduction rate of Y-BOCS scores (response: ≥25%; marked response: ≥50%). Our findings revealed that individuals with OCD demonstrated a significantly higher neuroticism score compared to healthy controls. Correlation analyses exposed a positive link between psychoticism and the duration of the disease. Moreover, family history strongly correlated with both obsessive thoughts and the total Y-BOCS score. Subsequent univariate Cox proportional analyses indicated that both low neuroticism and high extraversion traits could forecast the response to sertraline. Furthermore, only a high extraversion trait was linked to a marked response. Our results support the idea that personality traits may contribute to OCD vulnerability and predict sertraline treatment outcomes.

The associations between life events and person-centered personality consistency

OBJECTIVE

Few environments reliably influence mean-level and rank-order changes in personality-perhaps because personality development needs to be examined through an individualized, person-centered lens.

METHODS

The current study used Bayesian multilevel linear models to examine the association between 16 life events and changes in person-centered, Big Five personality consistency across 4 to 10 waves of data using four datasets (N = 24,491).

RESULTS

Selection effects were found for events such as marriage, (un)employment, retirement, and volunteering, whereas between-person effects for slopes were found for events such as beginning formal education, employment, and retirement. Within-person changes were often small and emerged inconsistently across datasets but, when present, were brief and negative in direction, suggesting life events can serve as a short-term disruption to the personality system. However, there were many individual differences around event-related trajectories.

CONCLUSION

Our results highlight that the effects of life events depend on how personality and its changes are quantified-with these findings underscoring the utility of a person-centered approach as it can capture the full range of these idiosyncrasies. Overall, these findings suggest that life events are associated with a range of idiosyncratic effects and can serve as a short-term, destabilizing shock to one's personality system.

Correlated Change Between Personality Traits and Perceived Social Support in Old Age

This study investigated correlated change between the Big Five personality traits and perceived social support in old age. Two data waves with an 8-year span from the Interdisciplinary Longitudinal Study on Adult Development (ILSE) were utilized. The longitudinal sample for this study consisted of 491 older adults (aged 64-68 years at T1). Four different aspects of perceived availability of social support were assessed (emotional support, practical support, social integration, and social strain). The Big Five personality traits were assessed with the Neuroticism-Extraversion-Openness Five-Factor Inventory (NEO-FFI). Results show significant latent concurrent correlations and correlated changes between personality traits and social support. Notably, correlated change with social support types differed depending on the Big Five traits being evaluated, with changes in extraversion, neuroticism, and agreeableness being the traits most associated with changes in social support types, and openness being least associated. Results are discussed through a life span development lens in light of past research.

The influence of daily life events on learning crafting and the intervening roles of academic emotions and regulatory focus in high school students

BACKGROUND

The adaptation of students to academic challenges in high school is crucial for academic performance. This study proposes the concept of "learning crafting," a previously under-researched area, and investigates its associated variables.

METHODS

Using a diary method, we studied 187 Chinese high school students (64% female; Mage  = 15.57) over a 9-day period. We examined the effect of daily life events on learning crafting, and considered academic emotions as mediators and regulatory focus as moderators.

RESULTS

Hierarchical linear modeling revealed that daily positive events were positively correlated with learning crafting at both within-person and between-person levels. Positive academic emotions served as mediators of this relationship. Furthermore, promotion focus had a positive moderating effect on the relationship between daily positive events and positive academic emotions. Conversely, daily negative events were only negatively correlated with learning crafting at the between-person level, and no additional significant relationships were identified.

CONCLUSION

This study elucidated the effect of daily life events on learning crafting, its mediating mechanisms, and conditional factors. These results not only contribute to crafting theory, but also provide theoretical underpinnings for future interventions targeting high school students' learning crafting.

Assessing Theories of State and Trait Change in Neuroticism and Symptom Improvement in the Unified Protocol

Researchers have shown neuroticism decreases with treatment (Roberts et al., 2017), although it is unclear if this reflects fleeting state-level changes (state-artifact position) or trait-level change (cause-correction hypothesis). These theories further propose that changes in neuroticism predict symptom change (cause-correction hypothesis) or are predicted by symptom change (state-artifact position). We compared these theories in a clinical trial of the Unified Protocol (UP). Participants (N = 38; Mage = 34.55, 71.1% female, 78.9% Caucasian) meeting DSM-5 criteria for a primary emotional disorder completed up to 12 weekly sessions of the UP. Neuroticism exhibited state-level changes by Session 6 but trait-level changes by Session 12. Within-person reductions in neuroticism exhibited bidirectional relations with anxiety symptom change but predicted unidirectional session-to-session reductions in depression. These findings provide relatively more nuanced support for the cause-correction hypothesis that the UP leads to trait changes in neuroticism that tend to precede symptom change.

The influence of personality in persons with MS

BACKGROUND

Comprehending the influence of personality traits on functional outcomes in persons with Multiple Sclerosis (pwMS) can aid in tailoring interventions and support strategies. We explored how demographic variables and personality traits predicted current vocation, information processing speed, anxiety and depression symptoms, and disability level in pwMS.

METHODS

We used a retrospective chart review on pwMS treated at the London (ON) MS Clinic, that assessed demographic data and personality traits. Participants were 384 (68.8 % females, mean age of 37.8, SD = 10.4) individuals with relapsing and primary progressive MS. We performed hierarchical linear regressions to predict outcomes while considering demographic variables and personality traits.

RESULTS

Younger age, higher education, and conscientiousness were significant predictors for better information processing speed, current vocation, depression symptoms, and disability level. Neuroticism was positively associated with anxiety and depression symptoms, while extraversion was negatively associated with depression symptoms. Women showed higher anxiety symptoms, while men showed higher depression symptoms.

CONCLUSION

Personality traits, such as neuroticism and conscientiousness, influence psychological outcomes in pwMS. Younger age and higher education are associated with better functional outcomes. Thus, when considering personality traits, future interventions should focus on those with higher neuroticism and lower scores on both extraversion and conscientiousness. Consideration of social support, coping strategies, and disease severity in future research may further enrich our understanding of MS outcomes.

Revisiting effects of teacher characteristics on physiological and psychological stress: a virtual reality study

Identifying personal characteristics associated with teachers' stress is a longstanding research goal with important implications for practice. The present work revisits the effects of individual characteristics in terms of neuroticism, classroom management self-efficacy, and cognitive (reasoning) abilities on stress using virtual reality (VR). Relying on a sample of 56 German pre-service teachers (Mage = 22.73, SDage = 4.93; 50.9% females), we capitalized on a VR classroom environment that allowed the integration of experimental control and authentic teaching situations, where pre-service teachers responded to the disruptive behaviors of the student avatars. We focused on stress responses in terms of psychological stress (self-reported stress) assessed after the VR session, and physiological stress (heart rate) assessed during the VR session. A total of 30 (26) participants was assigned to a condition with higher (lower) levels of disruptive student behavior, referred to as higher and lower complexity condition, respectively. Results from linear mixed-effects models revealed that neuroticism positively predicted psychological and physiological stress responses in pre-service teachers, whereas classroom management self-efficacy and cognitive (reasoning) abilities were not significantly related to stress responses. Level of complexity and the interaction between complexity and individual characteristics did not have an effect. This study underlines the value of VR as a tool for psychological research and contributes to existing knowledge on teacher characteristics and stress.

The Paradox of Love: A Historical Exploration of Western Philosophical Perspectives on Love, Exclusion, and Liberatory Potential

The present work tracks some of the most well-known thinkers on love in the Western philosophical tradition, where various theories emerge, conflict, converge, and fade away. Given that many questions about its nature have persisted for centuries, love's identity appears unsettled. Due to its unresolved identity, love might be best understood as a paradox existing between its resistance to definition and yet commonly recognized and experienced. The other central thread stemming from these philosophers of love is how the history of its theorizing constructed a restrictive notion that commonly excluded women from the experience. Offering a natural rebuttal to the history of exclusion promoted by these prominent thinkers is bell hooks' notion of an expansive and healing love that possessed the capacity to realize more fulfilling relationships and a compassionate society. This paper concludes with thoughts on love's liberatory nature, its capacity to create personal meaning, and its identity as a paradox without attempting to define it.

Personality traits and health-related behaviors in medical students facing a stressful event

Background

It is believed that personality traits have an impact on the propensity to change and maintain favorable lifestyle habits. This issue has been raised by multiple studies, however, none of them appeared to focus on population under severe psychological stress. The aim of the present study was to investigate the link between personality traits and health-related behaviors and measures such as dietary intake of specific food products, physical activity, body-mass index and the use of cigarettes in medical students facing a stressful event.

Methods

The study included a cohort of third-year medical students from the Medical University of Lodz, Poland, facing a stressful subject exam during the first COVID-19-related lockdown. At baseline, personality traits were evaluated with the use of the Polish version of the Big Five Inventory-Short questionnaire. Then, consumption of selected food products was monitored with the use of seven-day electronic dietary record. Also, some other health-related data was collected (body-mass index, physical activity and the use of cigarettes). General Linear Modeling techniques, logistic regression and exploratory factor analysis were applied to analyze the data.

Results

Four hundred and forty-four students completed the study. A two-factor pattern of food consumption was discovered by the exploratory factor analysis in the study group (34% of the variance explained). Higher conscientiousness, but not the other personality traits, was found to be significantly associated with generally healthier lifestyle manifested by higher consumption of vegetables, wholegrain products, fruits and nuts (adjusted beta 0.16, 95%CI 0.06 to 0.26, pη2 = 2.3%, p = 0.0015) and lower cigarette smoking (adjusted odds ratio 0.84, 95%CI 0.75 to 0.94, p = 0.0020), but insignificantly with physical activity and body-mass index.

Conclusion

Severely stressed medical students expressing high conscientiousness tend to present healthier behaviors. Therefore, interventions aimed at improving lifestyle habits in students with low conscientiousness might be useful.

The development of personality-From metatraits to facets-Across adolescence and into adulthood in a sample of Mexican-origin youth

The time between adolescence and adulthood is a transformative period of development. During these years, youth are exploring work, relationships, and worldviews while gaining the capacities needed to take on adult roles. These social and psychological processes are reflected in how personality develops across this period. Most youth personality development research has focused on the Big Five domains, ignoring the hierarchical structure of personality and missing broader, higher order processes and more specific, lower order processes. Toward a more comprehensive account, this study examines how personality develops from adolescence into the early years of adulthood at the metatrait (stability, plasticity), domain (Big Five), and facet levels. Data come from a longitudinal study of Mexican-origin youth (N = 645) with few socioeconomic resources who were assessed 5 times from Ages 14 to 23. We used latent growth curve models to investigate mean-level change, rank-order consistency, and the maintenance of trajectories for self-reported personality metatraits, domains, and facets. We found distinct developmental processes unfolding at each level of the hierarchy, including (a) mean-level changes in the metatraits and domains indicating increases in exploratory tendencies (i.e., plasticity) and maturity (i.e., increases in agreeableness and conscientiousness, decreases in neuroticism), and divergent change patterns between facets within each domain indicating nuanced maturational processes; (b) comparable levels of rank-order consistency for metatraits, domains, and facets; and (c) evidence that deviations from youth's developmental trajectories did not persist over time. Our findings offer insights into personality development that would be impossible to glean from the domain-level alone and adds needed sociocultural diversity to the literature. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Age-related impairment in fear memory extinction is restored by ketamine in middle-aged mice

Posttraumatic stress disorder (PTSD), a disabling and chronic condition after exposure to an extreme traumatic event, affects approximately 8% of the population worldwide. However, the underlying mechanisms of PTSD are not clear. The ability to manage fear memories is critical for PTSD. Differences in stress responsiveness and coping strategies by age represent an important starting point for the understanding and prevention of PTSD. However, we do not know whether the ability to cope with fear memories is decreased in middle-aged mice. To investigate this, we compared fear memory extinction among different age groups of mice. We found that middle-aged mice exhibited impaired fear memory extinction, which was accompanied by sustained enhanced long-term potentiation (LTP) induction in the extinction process. Most interestingly, ketamine treatment restored the impaired fear memory extinction in middle-aged mice. Moreover, ketamine could ameliorate the increased LTP during the extinction process through a presynaptic mechanism. Altogether, our results indicated that middle-aged mice were unable to extinguish fear memories, which could be treated with ketamine via presynaptic-mediated synaptic plasticity in middle-aged mice, suggesting that ketamine administration may be a new strategy for the treatment of PTSD.

Disordered gambling in a longitudinal birth cohort: from childhood precursors to adult life outcomes

BACKGROUND

Despite its introduction into the diagnostic nomenclature over four decades ago, there remain large knowledge gaps about disordered gambling. The primary aims of the present study were to document the long-term course, childhood precursors, and adult life outcomes associated with disordered gambling.

METHODS

Participants enrolled in the population-representative Dunedin Study were prospectively followed from birth through age 45. Disordered gambling was assessed six times from age 18; composite measures of childhood social class, general intelligence, and low self-control were based on assessments obtained from birth through age 15; adult socioeconomic, financial, and legal outcomes were obtained through age 45. Lifetime disordered gambling was predicted from the three childhood precursors and the adult outcomes were predicted from lifetime disordered gambling.

RESULTS

Past-year disordered gambling usually occurred at only a single time point and recurrence was relatively uncommon. Lower childhood social class, general intelligence, and self-control significantly predicted lifetime disordered gambling in adulthood. In turn, lifetime disordered gambling in adulthood significantly predicted occupational, educational, and financial problems in adulthood (ds = 0.23-0.41). These associations were markedly reduced and sometimes rendered nonsignificant after adjusting for childhood precursors (ds = 0.04-0.32).

CONCLUSIONS

Socioeconomic, financial, and legal outcomes in adulthood are not merely consequences of disordered gambling, but also are predicted from childhood precursors. Deflecting the trajectories of young people at risk for developing disordered gambling may help to ameliorate not just the development of later disordered gambling, but also other associated adverse outcomes.

Illusory posttraumatic growth is common, but genuine posttraumatic growth is rare: A critical review and suggestions for a path forward

Over the last 2.5 decades, trauma researchers have increasingly become interested in posttraumatic growth (PTG) - the concept that some people experience growth as a result of trauma exposure. I begin by reviewing extant research on PTG, with a focus on measurement and conceptual issues. Expanding on arguments made by others, I distinguish between three forms of PTG, 1) perceived PTG, which is an individual's beliefs about their own PTG, 2) genuine PTG, which is veridical growth following adversity, and 3) illusory PTG, which is motivated fabrications of PTG. Perceived PTG is extremely common, as over half of individuals exposed to a potentially traumatic event (PTE) report moderate or greater levels of PTG. I review evidence that most self-reports of PTG are greatly exaggerated and argue that perceived PTG is mostly illusory PTG. I propose five reasons for the disconnect between perceived PTG and genuine PTG, including design flaws in the current measurements, emotional biases that favor perceived PTG, the inherent appeal of PTG, cultural expectations, and problems of definition. I then review the empirical evidence concerning the prevalence rate of genuine PTG, coming to the bold conclusion that the occurrence of genuine PTG is very rare, contradicting current fundamental beliefs about PTG. I recommend researchers focus on the key areas of measurement and etiology of genuine PTG, which are necessary to create interventions that foster genuine PTG. I conclude by outlining a path to steer the scientific progression of PTG back in the right direction.

Clarity of Emotions and Goals: Exploring Associations with Subjective Well-Being Across Adulthood

Despite declines in cognition associated with age, emotional health tends to increase. However, extant studies find few differences in the type or number of emotion regulation strategies used by older compared to younger adults. This study tested the hypothesis that older adults have greater clarity of their emotions and goals compared to younger adults. Participants (total N = 709, ages 18-81) recruited in age-stratified samples completed measures of emotional clarity, goal clarity, depression, and life satisfaction. Results suggested that emotional clarity and goal clarity are positively correlated factors, with emotional clarity showing the lowest levels in emerging adults and highest levels in older adults. Goal clarity was lowest among emerging adults, but only small differences were found between middle and older adults. Across adulthood both emotional clarity and goal clarity were linked to lower depressive symptoms and greater life satisfaction. Limitations include data being cross-sectional and self-report based and the youngest sample being recruited differently from the older samples, but the results raise the possibility of developmental changes in emotional clarity across adulthood.

Supplementary Information

The online version contains supplementary material available at 10.1007/s42761-022-00179-6.

Personality traits and substance use among college students in Eldoret, Kenya

BACKGROUND

There is documented evidence of the increase of alcohol and substance use among college students globally. Increased morbidity and associated maladaptive socio-occupational outcomes of the habit with early dependence and mortality have also been reported. Majority of the substance use related studies conducted in low- and middle- income countries mainly look at health- related risk behaviour control mechanisms that focus on the social environment domain, with few or almost none focusing on those embedded within the person (self- control). This study focuses on the relationship between substance use and personality traits (in the self-control domain), among college students in a low- middle- income country.

METHODS

Design. A cross- sectional descriptive study that used the self- administered WHO Model Core and the Big Five Inventory Questionnaires to collect information among students in Colleges and Universities in Eldoret town, Kenya. Setting. Four (1- university campus; 3- non- university) tertiary learning institutions were randomly selected for inclusion. Subjects. Four hundred students, 100 from each of the 4 institutions; selected through a stratified multi-stage random sampling, who gave consent to participate in the study. Associations between various variables, personality traits and substance use were tested using bivariate analysis, while the strength/ predictors of association with substance use was ascertained through multiple logistic regression analyses. A finding of p ≤ 0.05 was considered statistically significant.

RESULTS

The median age was 21 years (Q1, Q3; 20, 23), approximately half 203 (50.8%) were male, with majority 335 (83.8%) from an urban residence and only 28 (7%) gainfully employed. The lifetime prevalence of substance use was 41.5%, while that of alcohol use was 36%. For both, a higher mean neuroticism score [substance use- (AOR 1.05, 95%CI; 1, 1.10: p = 0.013); alcohol use- (AOR 1.04, 95%CI; 0.99, 1.09: p = 0.032)] showed increased odds of lifetime use, while a higher mean agreeableness score [substance use- (AOR 0.99, 95%CI; 0.95, 1.02: p = 0.008); alcohol use- (AOR 0.99, 95%CI; 0.95, 1.02: p = 0.032)] showed decreased odds of lifetime use. A higher mean age (AOR 1.08, 95% CI; 0.99, 1,18: p = 0.02) of the students also showed an 8% increase in odds of lifetime alcohol use. The lifetime prevalence of cigarette use was 8.3%. Higher mean neuroticism (AOR 1.06, 95%CI; 0.98, 1.16: p = 0.041) and openness to experience (AOR 1.13, 95%CI; 1.04, 1.25: p = 0.004) scores showed increased odds of lifetime cigarette smoking, whereas being unemployed (AOR 0.23, 95%CI; 0.09, 0.64: p<0.001) had a decreased odd. Other substances reported included cannabis 28 (7%), sedatives 21 (5.2%), amphetamines 20 (Catha edulis) (5%), tranquilizers 19 (4.8%), inhalants 18 (4.5%), cocaine 14 (3.5%), with heroin and opium at 10 (2.5%) each. Among the 13 participants who reported injecting drugs, 10 were female and only 3 were male; this finding was statistically significant (p = 0.042).

CONCLUSIONS

The prevalence of substance use among college and university students in Eldoret is high and associated with high neuroticism and low agreeableness personality traits. We provide directions for future research that will examine and contribute to a deeper understanding of personality traits in terms of evidence- based approach to treatment.

Breed, age, and social environment are associated with personality traits in dogs

Personality in pets and other domesticated animals is important for their well-being and it can also influence human-animal relationships. Genetic and environmental factors influencing unwanted behavior in dogs are somewhat well known, but the factors influencing dog personality remain understudied. Here we examined environmental and demographic factors associated with seven broad personality traits in a survey of over 11,000 dogs. We utilized linear models and extensive model validation to examine the factors that have the most significant influences on personality and calculated effect sizes to assess the importance of these variables. Breed and age had the strongest associations with dog personality traits. Some environmental factors, especially puppyhood socialization, were also associated with personality. All factors had small effect sizes, highlighting that a lot of variation in personality remains unexplained. Our results indicate that personality traits are complex and strikingly similar in dogs, humans, and other nonhuman animals.

Individual differences in everyday multitasking behavior and its relation to cognition and personality

Our ability to multitask-focus on multiple tasks simultaneously-is one of the most critical functions of our cognitive system. This capability has shown to have relations to cognition and personality in empirical studies, which have received much attention recently. This review article integrates the available findings to examine how individual differences in multitasking behavior are linked with different cognitive constructs and personality traits to conceptualize what multitasking behavior represents. In this review, we highlight the methodological differences and theoretical conceptions. Cognitive constructs including executive functions (i.e., shifting, updating, and inhibition), working memory, relational integration, divided attention, reasoning, and prospective memory were investigated. Concerning personality, the traits of polychronicity, impulsivity, and the five-factor model were considered. A total of 43 studies met the inclusion criteria and entered the review. The research synthesis directs us to propose two new conceptual models to explain multitasking behavior as a psychometric construct. The first model demonstrates that individual differences in multitasking behavior can be explained by cognitive abilities. The second model proposes that personality traits constitute a moderating effect on the relation between multitasking behavior and cognition. Finally, we provide possible future directions for the line of research.

Conceptual and methodological issues in the study of the personality-and-culture relationship

Culture-and-personality studies were central to social science in the early 20th century and have recently been revived (as personality-and-culture studies) by trait and cross-cultural psychologists. In this article we comment on conceptual issues, including the nature of traits and the nature of the personality-and-culture relationship, and we describe methodological challenges in understanding associations between features of culture and aspects of personality. We give an overview of research hypothesizing the shaping of personality traits by culture, reviewing studies of indigenous traits, acculturation and sojourner effects, birth cohorts, social role changes, and ideological interventions. We also consider the possibility that aggregate traits affect culture, through psychological means and gene flow. In all these cases we highlight alternative explanations and the need for designs and analyses that strengthen the interpretation of observations. We offer a set of testable hypotheses based on the premises that personality is adequately described by Five-Factor Theory, and that observed differences in aggregate personality traits across cultures are veridical. It is clear that culture has dramatic effects on the thoughts, feelings, and behaviors from which we infer traits, but it is not yet clear whether, how, and in what degree culture shapes traits themselves.

Narcissistic Personality Disorder Studied the Long Way: Predicting Change in Narcissistic Pathology During College

OBJECTIVE

Otto F. Kernberg pioneered the description, understanding, and treatment of pathological narcissism. Narcissism has emerged as a clinical construct of considerable interest in clinical psychology, psychiatry, and psychoanalysis and has often been featured in the literature on personality and social psychology. Considerable discussion in recent years has focused on whether levels of narcissism seen among young adults have been increasing. Nearly all of that discussion has been focused on changes in successive cohorts in normative (normal-range) expressions of narcissism. No direct prospective longitudinal study of the same individuals has assessed for pathological narcissism during college, the period that has been the specific focus of such lively debate. This study aimed to fill that gap in the literature.

METHODS

This multiwave, longitudinal study explored pathological narcissism during college by enrolling first-year undergraduate students (N=250) from the Longitudinal Study of Personality Disorders and by using individual growth curve (IGC) analysis. Participants were assigned to either a possible personality disorder or no personality disorder group, according to results from the International Personality Disorder Examination.

RESULTS

By the third wave of assessments, 16% of the sample received a probable or definite diagnosis of at least one axis II personality disorder. IGC analysis revealed that pathological narcissism declined across the first 4 years of college. Personality predictors of this pattern of change are also discussed.

CONCLUSIONS

This study highlights the need for a fine-grained prospective study of the same participants over time to illuminate patterns of change in narcissism.

Personality traits, environment, and career stages of top athletes: An evidence from outstanding badminton players of Indonesia

The world badminton championship is a highly competitive arena. Successful athletes are those who have excellence, not only physically and technically but also mentally. The present study aims to identify the personality traits, environment, and career stages required by an athlete to achieve excellence. The research was conducted with a qualitative approach through in-depth interviews. As participants are 10 Indonesian badminton athletes who have achieved world-class achievements, such as the Olympics and world championships. They consist of 3 female athletes and 7 male athletes. The results showed that seven traits were effective in supporting their achievement, namely: achievement-oriented, hard work, persistent, autonomy, commitment, intelligence, and self-control. The family environment and sports environment influence the formation of traits and the emergence of high-achieving athletes. This research also found that athletes go through 5 phases in achieving achievement, namely exploration, specialization, investment, achievement, and maintenance.

Measuring Mindfulness in Business School Students: A Comparative Analysis of Mindful Attention Awareness Scale and Langer's Scale

Research studies have established that mindfulness helps in psychological well-being, stress reduction, chronic pain management, behavioral therapy, and other areas including organizational development. Mindfulness often refers to a state of consciousness, but mindfulness can also be understood as a personality trait. State mindfulness is referred as the individual's capacity to cultivate a particular state of mind during meditative practice. Traits are more permanent facets of personality characteristics that are difficult to change and likely have some basis in genetics. Few scholars have criticized meditative mindfulness as a trend and cautioned that organizations should carefully consider their goals before introducing meditative mindfulness training. This dichotomy has prompted us to review the literature and carry out a comparative analysis of two divergent measurement scales of mindfulness: the Mindful Attention Awareness Scale (MAAS) and Langer's mindfulness/mindlessness scale. The MAAS is the most widely used mindfulness scale to measure mindfulness, and Langer's scale measures mindfulness/mindlessness. We developed hypotheses relating Langer's scale and the MAAS. Further, we studied whether there is any difference in mindfulness/mindlessness among business school students with an undergraduate background in engineering and nonengineering streams. Using a self-administered questionnaire, we measured the mindfulness levels of 221 MBA first- and second-year graduates and tested the hypothesis using partial least squares structural equations modeling (PLS-SEM). We found that Langer's mindfulness/mindlessness scale was negatively associated with the MAAS. We did not find any effect of gender, education, and professional specializations on mindfulness.

Five-factor model, technology enthusiasm and technology anxiety

Older adults need to participate in the digital society, as societal and personal changes and what they do with the remaining time that they have in their older years has an undeniable effect on motivation, cognition and emotion. Changes in personality traits were investigated in older adults over the period 2019-2021. Technology enthusiasm and technology anxiety are attitudes that affect the relationship to the technology used. The changes in the score of technology enthusiasm and technology anxiety were the dependent variables. They were investigated with personality traits, age, gender, education, whether someone lives alone, cognitive function, digital social participation (DSP) and health literacy as predictors of the outcome. The Edwards-Nunnally index and logistic regression were used. The results indicated that DSP, lower age, lower neuroticism and higher education were indicative of less technology anxiety. High DSP and high extraversion are indicative of technology enthusiasm. DSP and attitude towards technology seem to be key in getting older adults to stay active online.

Does intelligence predict development of investment traits from mid to late adolescence? Evidence from a 3-year longitudinal study

INTRODUCTION

Investment theories have claimed reciprocal relations between intelligence and investment traits (i.e., personality traits related to seeking out, and dealing with, cognitive challenges). However, previous research has primarily addressed the effects of investment traits on intellectual development (environmental enrichment hypothesis) and often focused on either childhood or later adulthood. The present study investigated the effects of intelligence on investment traits (environmental success hypothesis) from mid to late adolescence.

METHOD

In a 3-year longitudinal survey (2008-2011) covering four measurement occasions, the predictive effects of both fluid and crystallized intelligence on intraindividual change in both the achievement motive (i.e., hope for success and fear of failure) and need for cognition were examined. Overall, 476 adolescents (t₁ : M_age  = 16.43, SD = 0.55; 51.3% girls) from Germany participated.

RESULTS

Second-order latent growth models indicated that fluid intelligence predicted a steeper growth in hope for success (β = .40), but was unrelated to change in the other investment traits. Crystallized intelligence had no effects on the investment traits under study.

CONCLUSIONS

The results contribute to the research on the bidirectionality of intelligence and investment traits and add to our understanding of personality development from mid to late adolescence. Specifically, they underline the importance of nurturing hope for success especially in individuals with lower intelligence, but also show that support for the environmental success hypothesis seems to be limited to certain investment traits.

Key Predictive Factors in the Mental Health of Chinese University Students at Home and Abroad

The prevalence of reported mental health problems among university students has increased at alarming rates in recent years. While various negative life events (from personal events such as relationship breakdowns to more global events such as COVID-19 [SARS-CoV-2] pandemic) have been found to be important predictors of poor mental health in this population, some individuals have been found robustly to fare better than others in confronting such events. Identifying factors that predict these individuals' mental health, along with the specific coping strategies they utilize may have significant practical implications when confronted by adverse events such as COVID-19. This study investigated relationships between the impact of the COVID-19 pandemic on 828 (453 females, 374 males, and one "Other") Chinese university students' mental health, and their internal strengths, personality characteristics, and demographic profiles. We also investigated whether students' use of specific coping strategies mediated these relationships. Stepwise multiple regression analyses (MRAs) and a path analysis revealed that students who resided in their home country, had higher levels of internal strengths, a lower level of neuroticism and a higher level of agreeableness and reported fewer negative mental health changes than did other respondents during COVID-19 in the second half of 2020. Self-regulation and withdrawal coping strategies were both important mediators of these relationships. These findings have important implications for universities in identifying and assisting students in the face of adverse events such as COVID-19.

“It Depends on the Situation”: How Hearing-Specific Contexts Affect the Way Adults With Hearing Loss Report Their Personal Attributes

Purpose:

This study examined how adults with untreated hearing loss respond to surveys about their self-efficacy, personality traits, and affective states when assessed “in general” and in listening-related contexts. We also explored the associations between hearing aid self-efficacy (HASE) and listening-related personality traits and affective states.

Method:

Sixty-two adults with self-reported hearing difficulties and no experience with hearing aids (HAs) participated in this descriptive study. Participants self-reported their self-efficacy, personality, and affective states in general and in listening-related contexts. Paired t tests and repeated measures with Holm–Šídák corrections were performed to explore differences between reports of patient traits in different contexts. Multiple regression analyses were conducted to explore significant associations.

Results:

On average, there were no significant differences between general and listening-related self-efficacy or personality traits. However, our participants indicated significantly more negative affective states in listening-related situations compared to in general. There was a small positive association between HASE and reported affective states in “General” and “Listening at Home” contexts.

Conclusions:

This study confirms that context-specific measures are not required to accurately assess self-efficacy and personality traits in the initial stages of the hearing health journey. However, reported affective states were listening dependent for this sample. Although reported affective states were related to HASE, context-dependent measures did not provide additional insight into participants' self-efficacy for successful HA use. This suggests that rehabilitation protocols designed to promote HASE and positive affect in general and listening-related situations could facilitate HA success.

Adolescence as a peak period of borderline personality features? A meta-analytic approach

This meta-analysis of cross-sectional data aimed to shed light on the often assumed peak in mean-level of borderline personality features during middle to late adolescence (i.e. age 17–22). Borderline personality features were operationalized through the Structured Clinical Interview for DSM-IV Axis II Personality Disorders (SCID-II). Search terms were entered into PsycINFO and Scopus. A total of 168 samples were included in the analyses, comprising 25,053 participants. Mean age ranged from 14.35 to 51.47 years ( M = 29.01, SD = 8.52) and mean number of borderline personality features from 0 to 8.10 ( M = 4.59, SD = 2.34). The hypothesized peak between age 17 and 22 was not substantiated by the confirmatory ANOVA analysis. However, subsequent exploratory GAM analysis provided evidence for a peak at 29.4 years. Caution is needed in interpreting these findings given that different trends appeared when GAM models were constructed separately for community, patient and borderline personality disorder (BPD) samples. Age differences in community samples indicated a significant linear decline in mean-level of borderline personality features over time. A linear rising trend was found in BPD samples. As a between-person mean-level approach was used in the current study, future longitudinal studies are needed to substantiate if between-person age difference generalize to within-person changes.

Individual and country-level factors associated with self-reported and accelerometer-based physical activity in old age: a cross-national analysis of European countries

This study aimed to investigate associations between individual-level (personality traits, quality of life) and country-level (gross domestic product per capita, number of policies and action plans for physical activity) factors with self-reported and accelerometer-based physical activity and cross-level interactions among European countries. Based on the Survey of Health, Ageing and Retirement in Europe (SHARE) from 2019-2020, self-reported physical activity (N = 46,617 from 27 countries) and accelerometer-based average acceleration and intensity gradient (N = 855 from 10 countries) were analyzed. Mixed-model regressions with two levels (individuals nested within countries) were used for analyses. Between countries differences accounted for relatively small portions of the variability in self-reported physical activity (intraclass correlation, ICC = 7.5%), average acceleration (ICC = 3.5%), and intensity gradient (ICC = 1.9%). There were more associations between individual- and country-level factors and self-reported physical activity than with accelerometer-based physical activity. The association between individual-level variables and accelerometer-based physical activity did not differ between countries. Cross-level interactions suggested that associations between some personality traits and self-reported physical activity were stronger in countries with lower GDP. Both individual- and country-level factors are related to participation in more intensive physical activities. Adults with less resilient personality traits living in countries with lower resources are at the highest risk for physical inactivity.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10433-022-00737-8.

Stability and change in dispositional envy: Longitudinal evidence on envy as a stable trait

Dispositional envy has been conceptualized as an emotional trait that varies across comparison domains (e.g., attraction, competence, wealth). Despite its prevalence and potentially detrimental effects, little is known about stability and change in dispositional envy across time due to a lack of longitudinal data. The goal of the present research was to close this gap by investigating stability and developmental change in dispositional envy over time. In a preregistered longitudinal study across 6 years, we analyzed data from N = 1229 German participants ( n = 510–634 per wave) with a mean age of 47.0 years at intake ( SD = 12.4, range 18–88). Results from latent factor models revealed that both global and domain-specific dispositional envy were stable across 6 years in terms of their rank order and mean levels, with stability coefficients similar to those of other trait measures reported in literature. Moreover, a substantial amount of variance in global and domain-specific dispositional envy was accounted for by a stable trait factor. Results thus provide evidence for a stable disposition toward the experience of envy both at the global level and within specific envy domains. The present findings have important theoretical and practical implications for the stability and development of dispositional envy in adulthood and advance the understanding of emotional traits in general.

Internet voting: the role of personality traits and trust across three parliamentary elections in Estonia

Some countries offer options to vote in elections remotely via the internet. However, not all voters take up this opportunity. This study investigates the role of the Five-Factor Model personality traits in the choice to use internet voting, and the potential mediating effects of trust in internet voting, controlling for sociodemographic variables. Survey data collected after national elections in Estonia in 2011 (N = 482), 2015 (N = 535), and 2019 (N = 546) were analyzed. Agreeableness was positively correlated with trust in internet voting in all samples. Additionally, Agreeableness was related to internet voting via trust, but not in all samples. Internet voting was predicted by higher trust in internet voting, better PC literacy, and speaking Estonian at home, across all samples. These results indicate that easy access to, and trust in, internet voting may play a bigger role in the decision to use internet voting than personality traits.

Who one is, whom one knows? Evaluating the importance of personal and social characteristics of influential people in social networks

Purpose

This study examines opinion leadership's personal and social characteristics to see which one is more effective in opinion leadership in four different industries: fashion, travel and tourism, wellness and book and literature. The specific subject of this investigation is how largely openness, exhibitionism and competence in interpersonal relationships and status and attitude homophily affect the opinion leadership and the decision-making of opinion leaders' followers.

Design/methodology/approach

The proposed model was tested with the questionnaire shared via stories featured on Instagram among followers of four micro-influencers in different industries. For the purpose of testing the offered hypotheses of this study, the partial least squares method was used.

Findings

The findings show that openness, exhibitionism and competence in interpersonal relationships have a substantial effect on opinion leadership. It was also evident that status and attitude homophily impact opinion leadership. The model supports the effect of both personal and social characteristics on opinion leadership; however, based on the results, the effect of personal characteristics on opinion leadership is more remarkable, both in a direct relationship and through the mediating role of para-social interaction.

Originality/value

This study is novel in categorizing opinion leaders' attributes in two different extents of personal and social characteristics. The authors defined a model of the effectiveness of each personal and social characteristic on opinion leaders. The model investigates whether the personal or social characteristics have the most effect on opinion leadership, particularly with the mediating role of para-social interaction.

Personality development in immigrant and non-immigrant adolescents: Disruption or maturation?

This study examined gender and immigrant status differences in stability and change in the Big Five traits in a sample of early adolescents in Greece from economically disadvantaged schools with a high immigrant composition (65% first- or second-generation immigrants). Youth in the sample ( N = 1252, 46% female, ages 12–13 at time 1) self-reported Big Five traits annually for 3 years. Mean-level and rank-order stability were examined separately by gender and immigration history. Growth modeling of mean-level scores showed declines in all five personality traits for both genders between ages 12 and 14, followed by increases in conscientiousness for girls and boys, and increases in agreeableness and openness to experience for boys only. In sensitivity analyses, boys showed disruption at all levels of perceived economic stress, but only girls with high levels of perceived economic stress showed disruption. Trajectories were similar for immigrant and non-immigrant youth, suggesting that immigrant youth did not show greater mean-level disruption. However, immigrant youth reported lower means on all traits except emotional stability. Rank-order stability was moderately strong over 3 years and comparable across both genders and immigration histories. Results in this high-risk sample supported the disruption hypothesis and suggest that immigration experiences are associated with personality development.

Personality development in adolescence: Examining big five trait trajectories in differential learning environments

This study addresses two questions: Do Big Five traits change from early to middle adolescence? How do developmental trajectories differ between educational environments (i.e., secondary school tracks)? We used a representative random sample from Germany, following 6th graders (T1, N = 1662; age: M = 11.68; SD = 0.63; female = 47.4%; from N = 87 primary schools) to the end of compulsory secondary education over three measurement points (i.e., assessing students in 6th, 7th, and 9th grade). Results of latent change modeling indicated overall increases in mean levels for all personality traits from early to middle adolescence. Regarding selection effects, the results indicated that more conscientious, agreeable, extraverted, open, and emotionally stable sixth graders were more likely to transit into an academic rather than a non-academic secondary school track. Moreover, the results showed that these initial differences in personality traits seemed to diminish between 6th and 9th grade for all personality traits. Additionally, controlling for selection effects, a contextual effect was discernible for conscientiousness. This study highlighted the potential role of differential learning environments for modifying changes in personality traits during adolescence.

Personality Development Across Adolescence and Young Adulthood: The Role of Life Transitions and Self-Concept Clarity

Personality develops across the lifespan, but most development occurs in adolescence and young adulthood. Life transitions to new social roles may be important drivers of mean-level personality development. The present study examined mean-level personality development in adolescence and young adulthood, and the role of the transition to tertiary education and working life therein in a sample of Dutch young people that were followed across 14 years ( N = 497, AgeW1 = 13.03 years). We explored whether young people’s self-concept clarity moderated these associations. Our hypotheses and analytical plan were pre-registered. Findings from Latent Growth Models showed support for maturation in personality across adolescence and young adulthood, but not a maturity dip. Having the role of employee was associated with higher conscientiousness, but no associations were found of the transition to tertiary education and the transition to work with mean-level development of any of the personality traits. Self-concept clarity did not moderate the role of transitions in mean-level personality development. Our findings suggest that socialization effects may not explain associations between life transitions and personality development in adolescence and young adulthood.

Personality traits as mediators of the relationship between childhood trauma and depression severity in bipolar disorder: A structural equation model

BACKGROUND

Childhood trauma is negatively associated with depression severity in bipolar disorder; however, the underlying mechanisms remain unclear. We investigated whether personality traits (neuroticism, extraversion, openness, agreeableness, conscientiousness) mediate the relationship between childhood trauma and the severity of bipolar depression.

METHODS

Data from 209 individuals with bipolar disorder recruited for the Prechter Longitudinal Study of Bipolar Disorder were analysed. Using structural equation modelling, we examined the direct and indirect associations between childhood trauma (Childhood Trauma Questionnaire) and depression severity (Hamilton Depression Rating Scale) - with the personality traits (NEO Personality Inventory-Revised) as mediators.

RESULTS

The direct effect of childhood trauma on depression severity (standardised β = 0.32, 95% bootstrap confidence interval [CI] = 0.20-0.45, p < 0.001) and the indirect effect via neuroticism (standardised β = 0.03, 95% bootstrap CI [0.002, 0.07], p = 0.039) were significant; supporting a partial mediation model. The indirect effect accounted for 9% of the total effect of childhood trauma on depression severity (standardised β = 0.09, 95% bootstrap CI [0.002, 0.19], p = 0.046). The final model had a good fit with the data (comparative fit index = 0.96; root mean square error of approximation = 0.05, 90% CI = [0.02, 0.07]).

CONCLUSION

Personality traits may be relevant psychological mediators that link childhood trauma to a more severe clinical presentation of bipolar depression. Consequently, a person's personality structure may be a crucial operative factor to incorporate in therapeutic plans when treating individuals with bipolar disorder who report a history of childhood trauma.

Personality traits and mental health care utilization: Longitudinal findings from the MIDUS

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 participants) of the Midlife Development in the United States (MIDUS) study. 1,632 participants provided data at all three waves. Second-order latent growth curve models showed that MHCU level predicted an increase in emotional stability, and emotional stability level predicted a decrease in MHCU. Increases in emotional stability, extraversion, and conscientiousness predicted decreases in MHCU. These results indicate that personality is associated with MHCU over time and may inform interventions to increase MHCU.