Search

ABSTRACT. Changes in personality traits in patients with Alzheimer's disease (AD) are extremely common throughout the course of the pathology, and these behavioral changes present themselves as challenges in clinical management and as a significant cause of caregivers’ burden. Objective: Using a personality inventory based on the five-factor model of personality, this study aimed to assesses the change in these factors by comparing the premorbid and current personality of individuals recently diagnosed with AD. Methods: A total of 30 AD patients were recruited, and their respective family members responded to the personality inventory at home through a hosted site. The patients were also divided into two groups according to the Clinical Dementia Rating (CDR): mild dementia (CDR 1) and moderate dementia (CDR 2). Results: Among all patients, there was a significant increase in neuroticism factor levels and a significant decrease in the extraversion, conscientiousness, openness, and socialization factors. When comparing the groups, only the extraversion factor showed a difference, with CDR 1 group accusing a higher change in scores. Higher scores in the factor neuroticism in the premorbid personality correlated with the current severity of the disease. Conclusions: This research draws the attention of family members and health professionals to changes in personality traits or behavior of relatives or patients, because it can reflect an underlying neurodegenerative process.

Introduction: Recent studies showed an association between personality traits and individual patterns of visual behaviour in laboratory and other settings. The current study extends previous research by measuring multiple personality traits in natural settings; and by comparing accuracy of prediction of multiple machine learning algorithms., Methods: Adolescent participants (N = 35) completed personality questionnaires (Big Five Inventory and Short Dark Triad Questionnaire) and visited an interactive museum while their eye movements were recorded with head-mounted eye tracking. To predict personality traits the eye-movement data was analysed using eight machine-learning methods: Random Forest, Adaboost, Naive Bayes, Support Vector Machine, Logistic Regression, k Nearest Neighbours, Decision Tree and a three-layer Perceptron., Results and Discussion: Extracted eye movement features introduced to machine learning algorithms predicted personality traits with above 33% chance accuracy (34%-48%). This result is comparable to previous ecologically valid studies, but lower than in laboratory-based research. Better prediction was achieved for Machiavellianism and Extraversion compared to other traits (10 and 9 predictions above the chance level by different algorithms from different parts of the recording). Conscientiousness, Narcissism and Psychopathy were not reliably predicted from eye movements. These differences in predictability across traits might be explained by differential activation of different traits in different situations, such as new vs. familiar, exciting vs. boring, and complex vs. simple settings. In turn, different machine learning approaches seem to be better at capturing specific gaze patterns (e.g. saccades), associated with specific traits evoked by the situation. Further research is needed to gain better insights into trait-situation-algorithm interactions., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Tsigeman et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Self-control is important for mental and physical health, and personality traits are vital antecedents for self-control. Previous studies suggest that conscientiousness and extraversion enhance self-control, whereas neuroticism hampers it. However, the link between personality and self-control has mostly been studied using a narrow conceptualization of self-control, as the ability to resist impulses, thus excluding initiatory self-control. Also, no studies have examined whether and how personality traits interact with one another to increase, or reduce, self-control. Data were collected on two occasions from 480 military cadets (31.04% female) to examine the relationship between the Big Five personality traits and self-control (general, inhibitory, and initiatory self-control). Furthermore, the study investigated the moderating role of neuroticism, as a trait and as individual facets, on the relationship between the other personality traits and self-control. Although neuroticism correlated negatively with all self-control dimensions, there were unique relations only with general and inhibitory self-control. Extraversion correlated positively with all self-control dimensions but was only uniquely related to initiatory self-control. Conscientiousness correlated positively with all self-control dimensions and this pattern persisted when we assessed the unique effects. Openness to experience and agreeableness correlated positively with general and inhibitory self-control but had no unique effects on any of the self-control dimensions. Neuroticism negatively moderated the relationship between extraversion and both general and inhibitory self-control, and the relationship between conscientiousness and both general and initiatory self-control. The facet-level analysis confirmed the general patterns and provided further detail on which facets of neuroticism were the most influential as moderators. In conclusion, the study highlights the critical role of different types of self-control, and that neuroticism plays a cardinal role for the effects of conscientiousness and extraversion on self-control., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Nilsen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Giving birth prematurely is a traumatic event that has many consequences for the mother but also for her baby and their family. Studies have shown that about a quarter of these mothers will suffer from post-traumatic stress disorder (PTSD) as a result. This study aims to identify internal personality factors associated with the development of PTSD in mothers who gave birth before 33 weeks. The results revealed significant correlations between two personality dimensions (neuroticism and extraversion) and the likeliness of developing PTSD in mothers who gave birth prematurely. Neuroticism is positively liked with the disorder while extraversion is negatively correlated with it. Studies should now focus on early detection of PTSD and better interventions for these mothers., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Grand et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Although the influences of extraversion and neuroticism on the relationship between childhood adversity and substance misuse have been considered in adults, they are not yet clear and have not been examined among adolescent samples. This study sought to investigate the relationship between childhood adversity and adolescent substance misuse, alongside the influences of extraversion and neuroticism, using data from a longitudinal birth cohort study. Statistical analyses were performed on a longitudinal dataset provided by the Christchurch Health and Development Study (CHDS). After controlling for confounds, childhood adversity was a significant predictor of substance use disorder symptoms in adolescence. Moderation analyses showed that experiences of childhood adversity were most strongly associated with adolescent substance use disorder symptoms at higher levels of extraversion and at higher levels of neuroticism. Among adolescents who have experienced childhood adversity, extraversion and neuroticism may be risk factors for substance use disorder. By encouraging professionals to target adolescent substance misuse intervention and prevention approaches towards those who have experienced childhood adversity and are high in extraversion and/or neuroticism, these findings may help to diminish the prevalence of adolescent substance misuse and improve the health of adolescents., (© 2024 The Authors Personality and Mental Health Published by John Wiley & Sons Ltd.)

Objective: This study examined whether phenotypic correlations between psychopathological dimensions and personality traits of different hierarchical levels originate from common genetic and environmental sources of variance., Method: Participants were 386 monozygotic and 204 dizygotic twins. The Psychiatric Diagnostic Screening Questionnaire (PDSQ) was applied along with the Revised NEO Personality Inventory (NEO-PI-R). The results of the CFA confirmed the hypothesis of the internalizing and externalizing dimensions underlying PDSQ scales., Results: The results indicated a significantly greater role of genetic compared to environmental factors in the relationship between internalizing psychopathology and personality traits. Facets of neuroticism showed positive genetic links with internalizing disorders, while negative genetic links were shown for all facets of extraversion except excitement-seeking, competence, self-discipline, achievement striving, actions, and trust. Lower-order personality traits were shown to be associated with internalizing disorders more intensively than the broader domains to which they belong, both at the phenotypic and genetic levels., Conclusions: High neuroticism, together with several facets from the domain of extraversion and conscientiousness seems to represent an increased genetic susceptibility to the disorders from the internalizing spectrum. Results also suggest that specific environmental factors which are not shared with personality traits contribute to the internalizing symptoms., (© 2023 Wiley Periodicals LLC.)

Background: Personality traits have been proposed as risk factors for depressive symptoms. However, the neural mechanism behind these relationships is unclear. This study examined the possible mediating effect of resting-state functional connectivity networks on these relationships., Methods: Data from 153 healthy Germans were obtained from the MPI-Leipzig Mind-Brain-Body: Neuroanatomy & Connectivity Protocol database. Network-based statistics were used to identify significant functional connectivity networks that were positively and negatively associated with the personality traits of neuroticism, conscientiousness, and extraversion, with and without demographical covariates. Mediation analyses were performed for each personality trait and depressive symptoms with the significant positive and negative network strengths of the respective personality traits as mediators., Results: Neuroticism, conscientiousness, and extraversion were significantly correlated with depressive symptoms. Network-based statistics identified patterns of functional connectivity that were significantly associated with neuroticism and conscientiousness. After controlling for demographical covariates, significant conscientiousness-associated and extraversion-associated networks emerged. Mediation analysis concluded that only the neuroticism-positive network mediated the effect of neuroticism on depressive symptoms. When age and sex were controlled, the extraversion-positive network completely mediated the effect of extraversion on depressive symptoms., Conclusions: These findings revealed that patterns of intrinsic functional networks predict personality traits and suggest that the relationship between personality traits and depressive symptoms may in part be due to their common patterns of intrinsic functional networks., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Lee et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Objective: The goal of the present research was to test the retrospective and prospective associations between the Big Five personality traits and clinical diagnosis of angina while controlling for demographic characteristics., Methods: Data from middle-aged and older adults from a cohort study Understanding Society: the UK Household Longitudinal Study (UKHLS) were extracted and analyzed using binary logistic regressions (N = 10,124 for the retrospective study and N = 5485 for the prospective study). Personality was measured using a self-report 15-item version of the Big Five inventory between 2011 and 2012. Angina was measured by a self-report clinical diagnosis history question in each wave from until 2019. Covariates in our models included age, sex, income (monthly), education, and marital status., Results: Neuroticism was positively related to the likelihood of clinical angina diagnosis in both the retrospective (OR = 1.22, 95% C.I. [1.11, 1.34]) and the prospective (OR = 1.52, 95% C.I. [1.19, 1.94]) study whereas Extraversion had a positive association with odds of angina (OR = 1.52, 95% C.I. [1.17, 1.97]) in the prospective study only. The negative association between Openness and clinical angina diagnosis in the cross-sectional analysis is borderline significant (OR = 0.91, p = 0.048, 95% C.I. [0.83, 1.00])., Conclusion: Our research indicated that personality traits are associated with the risk of angina. These findings emphasize the importance of considering personality traits in understanding the etiology of angina and potentially informing personalized prevention and intervention strategies., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Introduction: Substance use disorder (SUD) is often considered a chronic illness in which prolonged recovery, in terms of abstinence, is uncommon. Personality has been found to predict recovery, but not much is known about its long-term predictive ability as the majority of previous studies have had short follow-up periods (≥ one year). The current longitudinal cohort study therefore investigated whether personality traits predict short- (STR) as well as long-term recovery (LTR) in SUD patients., Methods: Treatment-seeking patients with SUD (n = 123) completed the NEO Personality Inventory - Revised. STR and LTR categories were defined as scoring <8 on the Alcohol Use Disorders Identification Test - C and <2 on the Drug Use Disorder Identification Test - C at the one-year and 6-8-year follow-up, respectively. Whether personality traits predicted outcome was investigated by two-tailed independent samples t-tests, α < 0.05. Additional analysis was conducted with latent growth curve model., Results: Neuroticism (inversely, p = .004, d = 0.55) and Extraversion (p = .04, d = 0.38) predicted STR (n = 114). Although not significant the effect size for Conscientiousness was above the cut-off for a practical significant effect (d = 0.31). No traits predicted LTR category. Still, the effect sizes for LTR regarding Neuroticism (d = 0.36), Extraversion (d = 0.21) and Conscientiousness (d = 0.27) indicated that these traits have relevance for LTR. The latent growth curve model indicated that these traits predicted the short-term use of drugs and long-term use of alcohol in this cohort dominated by patients suffering from severe poly-SUD., Conclusion: Personality traits predict recovery. The effect sizes indicate that more studies with larger samples on personality traits and LTR are required to understand their possible influences on the recovery process., Competing Interests: Declaration of competing interest The authors report that there are no competing interests to declare., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

This paper aimed at investigating the relationship between HEXACO personality traits and academic performance in two samples of Italian 10-14 years old middle-school adolescents (N = 714 and N = 1093) using Multilevel Mixed Models. The main results show that: 1) Conscientiousness and Openness to Experience were the most important predictors of school performance, followed by Honesty-Humility; 2) a modest effect was present also for eXtraversion and Emotionality; 3) these influences occurred net of the influence of gender and class and could be generalized to male and female adolescents across 6 th , 7 th and 8 th grade; 5) Perfectionism, Diligence and Prudence within Conscientiousness, Inquisitiveness within Openness, and Sincerity within Honesty-Humility were the facets more correlated with school performance; 6) results were replicated in two studies. Results are discussed and conclusions are drawn., Competing Interests: Declaration of competing interest None., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)

Although there is robust evidence that being more extraverted is related to higher popularity, only few studies have examined which actual behaviours (e.g., verbal content, body language) might explain this association. The current study examined whether observer-rated dominant behaviours (nonverbal, paraverbal, verbal, and general cues) mediate the relationship between self-rated extraversion and its facets (assertiveness, sociability, and activity) and other-rated popularity in zero-acquaintance settings. In two studies, we analysed data from face-to-face (Study 1, N = 124) and virtual (Study 2, N = 291) group interactions where participants were videotaped while performing a task and subsequently rated each other on popularity. Across studies, extraversion and the facets assertiveness and sociability were consistently associated with higher popularity, while the role of dominant behaviours differed. In Study 1, only two nonverbal behaviours, dominant gestures and upright posture, mediated the association between extraversion and popularity. In Study 2, all four types of behavioural cues mediated the association between extraversion (facets) and popularity. We discuss how these findings provide insights into the mechanisms of attaining popularity at zero acquaintance in diverse social settings., (© 2024 The Authors. British Journal of Social Psychology published by John Wiley & Sons Ltd on behalf of British Psychological Society.)

Background: Women are vulnerable to stress-related disorders. Examinations are a source of stress, triggering emotional, cognitive, and hormonal responses. We examined women's psychological and hormonal stress responses and academic performance according to personality during a real-life examination., Methods: Female students ( N  = 66) were divided into two groups based on hierarchical cluster analysis: one cluster characterized by high neuroticism and moderate extraversion (HN-ME; n  = 42) and the other by low neuroticism and high extraversion (LN-HE; n  = 24). Academic performance, perceived stress, and emotional dysregulation were analyzed. State anxiety, affect, and cortisol release were measured before and on the examination day., Results: The HN-ME cluster was high in perceived stress, emotional dysregulation, and negative affect. This cluster also had higher state anxiety levels two days before and shortly after the examination compared to the LN-HE cluster. Students' cortisol levels were higher on the examination day, and there was a marginal significance of the Cluster factor in the cortisol release regardless of the day of measurement., Conclusions: Women with high neuroticism and moderate extraversion may be more vulnerable to psychological stress in academic settings but similar to other women in their cortisol response.

Background: Depression is a major public health concern. A barrier for research has been the heterogeneous nature of depression, complicated by the categorical diagnosis of depression which is based on a cluster of symptoms, each with its own etiology. To address the multifactorial etiology of depression and its high comorbidity with anxiety, we aimed to examine the relations between personality traits, diverse behavioral, cognitive and physical measures, and depression and anxiety over the lifespan., Method: Our sample was drawn from the NKI-RS, a community-based lifespan sample (N = 1494 participants aged 6 to 85). Analyses included multivariate approach and general linear models for group comparisons and dimensional analyses, respectively. A machine learning model was trained to predict depression using many factors including personality traits., Results: Depression and anxiety were both characterized by increased neuroticism and introversion, but did not differ between themselves. Comorbidity had an additive effect on personality vulnerability. Dimensionally, depression was only associated with personality in adolescence, where it was positively correlated with neuroticism, and negatively correlated with extraversion, agreeableness, and conscientiousness. The relationship between anxiety and personality changed over time, with neuroticism and conscientiousness being the most salient traits. Our machine learning model predicted depression with 70 % accuracy with neuroticism and extraversion contributing most., Limitations: Due to the cross-sectional design, conclusions cannot be drawn about causal relationships between personality and depression., Conclusion: These results underscore the impact of personality on depressive disorders and provide novel insights on how personality contributes to depression across the lifespan., Competing Interests: Declaration of competing interest The authors have no competing interests to declare., (Copyright © 2024. Published by Elsevier B.V.)

Cognitive gerontology research requires consideration of performance as well as perceptions of performance. While subjective memory is positively associated with memory performance, these correlations typically are modest in magnitude, leading to the need to consider whether certain people may show weaker or stronger linkages between performance and perceptions. The current study leveraged personality (NEO Big Five), memory performance (i.e., word recall), and perceptions of memory ability (i.e., metamemory in adulthood and memory decline) data from the St. Louis Personality and Aging Network (SPAN) study ( n  = 774, mean age: 71.52 years). Extraversion and conscientiousness held the most consistent associations with the cognitive variables of interest, as both traits were positively associated with metamemory and word recall, but negatively associated with subjective decline. Moreover, extraversion moderated associations between word recall and both memory capacity and complaints, insofar that objective-subjective associations were weaker for those adults higher in extraversion. These findings highlight the need to understand how personality influences the sources of information employed for subjective cognitive beliefs.

Objective: The aim was to investigate psychological risk profiles of cardiovascular disease (CVD). Depression and anxiety have been linked to CVD, but research has not incorporated personality and sex-specific analyses are warranted. In this study, we examine the role of sex, neuroticism, extraversion, anxiety and depression on the risk of CVD., Method: Using data from the HUNT-study and the mortality register, 32,383 (57.10% men) participants were followed for an average of 10.48 years. During this time, 142 died of myocardial infarction (MI) and 111 of stroke., Results: Cox regression showed that depression (HR = 1.07, 95% CI = [1.00, 1.14]) and neuroticism (1.23 [1.08, 1.40]) were significantly related to an increased risk of MI. One standard unit increase in depression and neuroticism was associated with 1.22 [CI 1.01, 1.47] increase and 1.43 [CI 1.14, 0.78] increase in the risk of MI respectively. For stroke, there was no significant effect of anxiety, depression or personality. However, we found a significant interaction effect between sex and extraversion where higher extraversion was associated with greater risk of stroke for women only., Conclusions: Both neuroticism and depression were related to MI. We observed an interaction between extraversion and sex with stroke, but the effect size was small. The role of extroversion as a risk factor for CVD remains inconclusive.

Objective: Low neuroticism, high extraversion, and high conscientiousness are related to physical activity (PA). We tested whether the small size and heterogeneity of these relationships result because personality traits influence one another as well as because some narrow facets rather than the broad domains contain more specific variance relevant to PA., Method: Participants were men and women enrolled in the University of North Carolina Alumni Heart Study who completed the Revised NEO Personality Inventory (NEO-PI-R) and reported their past month's average activity on an 8-point scale. In Study 1, we examined prospective correlations between the five NEO-PI-R domains and PA. In Studies 2 and 3, we used multinomial logistic regression to examine associations between PA and trait pair combinations (personality styles) controlling for age, sex, educational achievement, relationship status, and depression., Results: Study 1 revealed that lower neuroticism (N) and agreeableness (A) and higher conscientiousness (C) predicted more PA. Taken together, Studies 2 and 3 found that the combination of high Extraversion (E) and high openness (O) was related to higher PA and that combinations of low E and high A and low E and low C were related to lower PA. Study 3, which examined the activity facet of E (E4), found that E4 is an important driver of E-PA associations., Conclusions: Personality traits do not operate in isolation. They may influence how other traits are expressed and such nonadditive effects can impact PA. Assessment of personality styles could help to identify individuals at risk for PA avoidance and may be useful for developing personalized interventions. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Introduction: 360-degree evaluations are used as an assessment in order to identify strengths and weaknesses of, or as a continuous evaluation for, residents. The aim of this study was to investigate the relationship between personality and ratings on 360-degree evaluations among surgical residency applicants. A secondary aim was to describe the personality profile of applicants for a surgical residency position., Methods: Doctors interviewed for a residency or locum position in general, urology, or pediatric surgery were included. Participants rated their personality on the Neutralized Big Five Inventory. A 360-degree assessment was conducted. Scores from two laparoscopic simulators were used as a measure of technical ability. Univariate analyses were used to assess the results. Student's t-test was used to compare personality and Pearson correlations between 360-degree assessment and personality., Results: Fifty doctors participated: data were complete for 38. Personality profiles showed higher emotional stability, agreeableness, conscientiousness and openness ratings than the norm. Correlations revealed a significant relationship between extraversion and higher scores on the 360-degree assessments. Significant univariate correlations were found between extraversion and the 360-degree assessments, and two of the correlations held up after adjustment for multiple tests. No correlations with performance when using laparoscopic simulators were found., Conclusions: Applicants for surgical residency rated significantly higher than the norm in four personality domains. Extraversion correlated with overall higher scores in 360-degree assessments by coworkers. Higher scores were not related to objective measures of technical skill, highlighting the importance of using objective measures for assessment., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Previous studies of resting electroencephalography (EEG) correlates of personality traits have conflated periodic and aperiodic sources of EEG signals. Because these are associated with different underlying neural dynamics, disentangling them can avoid measurement confounds and clarify findings. In a large sample (n = 300), we investigated how disentangling these activities impacts findings related to two research programs within personality neuroscience. In Study 1 we examined associations between Extraversion and two putative markers of reward sensitivity-Left Frontal Alpha asymmetry (LFA) and Frontal-Posterior Theta (FPT). In Study 2 we used machine learning to predict personality trait scores from resting EEG. In both studies, power within each EEG frequency bin was quantified as both total power and separate contributions of periodic and aperiodic activity. In Study 1, total power LFA and FPT correlated negatively with Extraversion (r ∼ -0.14), but there was no relation when LFA and FPT were derived only from periodic activity. In Study 2, all Big Five traits could be decoded from periodic power (r ∼ 0.20), and Agreeableness could also be decoded from total power and from aperiodic indices. Taken together, these results show how separation of periodic and aperiodic activity in resting EEG may clarify findings in personality neuroscience. Disentangling these signals allows for more reliable findings relating to periodic EEG markers of personality, and highlights novel aperiodic markers to be explored in future research., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Inc.)

Executive functions (ЕF) are complex cognitive processes that govern our behavior and thoughts. Associations between personality traits and executive functions clarify the mechanisms of a person's ability to function in everyday situations. The main goal of this study was to explore different personality dimensions relevant to the prediction of two different executive functions - Inhibition and Working Memory. The Big Five Inventory and the Adult Executive Functioning Inventory (ADEXI) were administered on a community sample comprising 549 young adults aged 18-35 years (mean age 22.10 years, SD 3.13). After controlling for age, gender and level of education, Conscientiousness and Extraversion were the most predictive personality traits, while Neuroticism and Agreeableness made specific contributions to the prediction of one of the two executive measures: Working Memory or Inhibition. Specifically, high Conscientiousness and Extraversion with low Neuroticism were significant predictors of Working Memory ability. On the other hand, high Conscientiousness and Agreeableness with low Extraversion predicted better Inhibition ability. These findings support the conclusion that these dimensions of individual differences seem to have numerous points of overlap at both psychological and neurobiological levels, but differences between these constructs are still significant., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

People experience momentary fluctuations in how much they differentiate between emotions and how clear they are about what they are feeling. To better understand situational predictors of shifts in emotion differentiation and emotional clarity, we investigated whether individuals are more differentiated and clearer about their emotions in social situations (vs. alone) given that emotions fulfill important social functions. We tested if these within-person associations varied depending on socially relevant individual differences, including age, extraversion, and social connectedness. We also examined whether people are more differentiated and clearer in situations that have previously been processed (i.e., familiar situations) and if this effect was stronger for older (vs. younger) adults. Community adults ( N = 290, aged 25-85 years) completed measures of extraversion and social connectedness and then were randomly prompted 6 times a day for 10 days to report on their current emotional experience and situation. Using multilevel structural equation modeling, social context was associated with less positive emotion differentiation and not associated with emotional clarity; these within-person associations did not differ by age, extraversion, or social connectedness. Individuals experienced more differentiated positive emotions and higher emotional clarity than usual when they were in more (vs. less) familiar situations. Familiarity was especially predictive of higher positive emotion differentiation among relatively older (vs. younger) adults. These findings suggest positive emotion differentiation, particularly in familiar situations could be a way in which the quality of one's emotional experience changes with age. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Objective: To examine the association between personality traits, defined by the Five-Factor Model, and the initiation and termination of physical activity across adulthood., Design: Longitudinal analysis of participants from nine samples (N > 28,000)., Main Outcome Measures: Physical activity status at follow-up., Results: A random-effect meta-analysis revealed that higher conscientiousness, extraversion, and openness were related to a higher likelihood of initiation of physical activity over time among individuals who were physically inactive at baseline and to a lower risk of termination of physical activity among those who were physically active at baseline. In contrast, higher neuroticism was associated with a lower probability of initiation of physical activity and a higher likelihood of termination over time. Although not hypothesised, agreeableness was also associated with better physical activity outcomes over time., Conclusion: This study provides the largest and the longest evidence of a replicable association between personality and change in physical activity status. Personality may motivate both the initiation and termination of physical activity.

Personality traits are typically assumed to predict psychological distress, with little attention paid to the potential influence of psychological distress on personality traits. Recent empirical findings, however, challenge this prevailing view by demonstrating the potential for personality traits to change and suggesting the plausible influence of chronic distress on these traits. This study aimed to examine the mutual within-person associations between psychological distress and the Big Five personality traits. The primary research question was whether a change in psychological distress is associated with a change in personality traits (and vice versa) after approximately 4 years. A nationally representative sample from Australia (N = 22,837), collected at four time points over 13 years, was used. The random-intercept cross-lagged panel model was used to partition variance into between-person and within-person components. Results showed that there was no temporal within-person association between openness and distress. Extraversion and conscientiousness were found to have bidirectional within-person relationships with distress, suggesting that increases in extraversion and conscientiousness are associated with decreases in distress over time and vice versa. Emotional stability and agreeableness showed unidirectional relationships with distress, with increased distress predicting decreased emotional stability and increased agreeableness predicting decreased distress. Therefore, except for openness, the other traits had at least one significant within-person link to psychological distress. These findings unveil a reciprocal longitudinal linkage between personality traits and psychological distress, highlighting the potential negative impact of prolonged psychological distress on the developmental trajectory of personality traits., (© 2023 John Wiley & Sons Ltd.)

Objective: To compare the personalities, social avoidance and distress, and anxiety status of Chinese patients with and without objective halitosis, and investigate the association among these psychological disorders., Methods: Patients who complained of bad breath and diagnosed with objective halitosis were enrolled into the halitosis group, while patients without objective halitosis were enrolled into the control group. The questionnaires included the sociodemographic profile of the participants, Eysenck Personality Questionnaire (EPQ), Social Avoidance and Distress Scale (SAD), and Beck Anxiety Inventory (BAI)., Results: A total of 280 patients were assigned into objective halitosis group (n = 146) and control group (n = 134). The extraversion subscales (E) score of the EPQ in the halitosis group were significantly lower than that in the control group (p = 0.001). The total SAD score and proportion of patients with anxiety symptoms in the BAI scale in the objective halitosis was significantly higher than that in the control group (p < 0.05). There was a negative correlation between the extraversion subscale and the total SAD score, Social Avoidance and Social Distress subscales (p < 0.001)., Conclusion: Patients with objective halitosis have more introverted personality traits and are more likely to have social avoidance and distress than the nonhalitosis population., (© 2023 Wiley Periodicals LLC.)

Problem drinking, which may be more prominent among young adults, is associated with mental and physical complications. The onset, use, and abuse of alcohol may be related to personality traits such as agreeableness, neuroticism and extraversion. This study aimed to examine the relationship between personality traits and alcohol use among undergraduates in southwest Nigeria. This was a cross-sectional study carried out among undergraduates in southwestern Nigeria. Four hundred and twelve (412) students were recruited using multi-stage random sampling from the total full-time student population. Each participant completed Alcohol Use Disorder Identification Test (AUDIT) and Big Five Inventory-10 (BFI-10). The result showed that the lifetime prevalence of alcohol use was 31.8% while 10.8% were involved in problem drinking. Also, there was an association between alcohol use, male gender and parental history of psychoactive substance use. Out of the 5 personality traits, the extraversion trait was higher among drinkers (P = 0.001) while agreeableness was significantly lower among drinkers (P = 0.033). Extraversion trait was significantly higher in respondents involved in problem drinking (P < 0.001). The predictors of problem drinking in this study were extraversion trait and male gender. The study suggests there are intervening factors mediating personality traits and problem drinking among undergraduates.

Diener et al. (1995) used a multimethod approach to test a hierarchical model of trait affect. The model suggests that specific trait affects are related to each other by two, distinct, but negatively correlated factors. We report the results of a conceptual replication study that addressed several limitations of Diener et al.'s (1995) study. We used three ethnically diverse samples which included a group of undergraduates along with both of their biological parents. As such, in terms of generalizability, we improved upon the original study which was limited to a student sample by also including middle-aged adults as targets. Most importantly, we included measures of hedonic tone to validate the interpretation of the higher-order factors as positive affect and negative affect. Also, we did not average informant ratings to model individual rating biases. Further, we used item-level indicators rather than item averages as indicators of basic affects. Our results confirm Diener et al.'s (1995) model and demonstrate that positive trait affect and negative trait affect are negatively correlated and account for the covariance among specific affects. We discuss the implications of these results in the context of personality theories that consider positive trait affect and negative trait affect as independent factors related to extraversion and neuroticism, respectively (Costa & McCrae, 1980). We argue that this model cannot account for the negative correlation between positive affect and negative affect and that further research is needed to locate affect within the Big Five model of personality. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Intro: The current study examined the effects of adulthood socioeconomic status (SES) on levels of 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 longitudinal studies: the Swedish Adoption/Twin Study of Aging (SATSA, N = 2000), the Midlife in the United States (MIDUS, N = 6428), and the Health and Retirement Study (HRS, N = 23,238)., Results: Using the latent growth models, across samples, we found associations between high SES and low levels of neuroticism and high levels of extraversion, openness, and conscientiousness. The effects of SES on changes in personality traits were mainly observed in the aging sample of HRS. In general, a similar pattern was observed at the nuance level. Analyses of the moderating effects of age suggested some evidence for the increasingly important role of SES in levels of and changes in personality traits in older ages., Conclusion: The findings support SES as a source that partially accounts for individual differences in personality traits level. Some evidence was found for the relations between SES and changes in personality traits in old age., (© 2022 Wiley Periodicals LLC.)

Group formation plays a crucial role in enhancing collaborative learning experiences. This study investigates the impact of extraversion as a criterion for group formation on collaborative learning outcomes. A total of 180 students participated in the experiment and were assigned to groups that were homogeneously or heterogeneously distributed in terms of extraversion. The groups met weekly and worked on group assignments throughout the semesters. The first hypothesis posed the outcomes to be explainable at the group-level. Surprisingly, the results show that groups with a homogeneous distribution of extraversion reported higher levels of group work satisfaction than those with a heterogeneous distribution, in contrast to the second hypothesis and the group hierarchy theory. These findings emphasize the potential of considering personality traits when forming groups and extend the existing literature on group formation. The study takes a critical stance by addressing normative definitions of leadership. Future research is suggested to further enhance collaborative learning experiences using similar interdisciplinary and experimental methods., Competing Interests: Declaration of competing interest All the authors declare that they have no established conflicting financial interests or personal relationships that may have influenced the research presented in this paper. We would like to confirm that there are no conflicts of interest associated with this publication and that there has been no financial support for this work that could have influenced its outcome. We also declare that we have no data to publish and no funding to report. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. We further confirm that the order of authors listed in the manuscript has been approved by all of us. We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property. In so doing we confirm that we have followed the regulations of our institutions concerning intellectual property. Regarding ethical considerations, any aspect of the work covered in this manuscript that has involved human patients has been conducted with the ethical approval of all relevant bodies, and as such are acknowledged within the manuscript. We understand that the Corresponding Author is the sole contact for the Editorial process, and we have provided a current and correct email address accessible by the Corresponding Author., (Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)

Research has examined the use of basic personality traits in describing problematic personality traits, such as borderline and psychopathic traits. Specifically, the Honesty-Humility factor of the HEXACO model of personality appears to account for a large proportion of the variance in these traits. The purpose of the present study was to examine whether the HEXACO model would similarly predict borderline traits. As found in previous research, psychopathic traits were predicted by low Honesty-Humility, Emotionality, Agreeableness, and Conscientiousness, whereas borderline traits were found to be negatively related to eXtraversion and Conscientiousness but had a significantly positive relationship with Emotionality. As Emotionality appeared to be a differential predictor in this study, future research should further examine how Emotionality distinguishes between the various problematic personality traits, which may aid potential treatments/therapies., (© 2023 The Authors Personality and Mental Health Published by John Wiley & Sons Ltd.)