Do you see my growth? Two longitudinal studies on personality development from childhood to young adulthood from multiple perspectives

Personality developmental studies typically rely on single reporter data, while multi-informant studies are rare. In two longitudinal studies, the present investigation examined inter-judge differences in the development of the Big Five personality traits from childhood to young adulthood. Study 1 investigated personality development as judged by the self and parents from age 12 to 17 to 29 (N = 186). Study 2 investigated personality development annually from age 12 to 18 as judged by the self, and both parents and siblings (N = 574). Results showed personality maturation from childhood to young adulthood with disruptions during adolescence. Only parent-reports indicated maturation in adolescents’ negative affectivity (decreases in N), while self-reports indicated maturation in self-regulatory traits (increases in A and C).     

The stability of adult personality varies across age: Evidence from a two-year longitudinal sample of adult New Zealanders

We model developmental patterns in the stability of Big-Six personality markers over a two-year period in a multi-cohort panel study of adult New Zealanders (n = 3910). Structural Equation Models testing patterns of linear, quadratic and cubic effects identified considerable variation in the stability of most aspects of personality across the adult age range (20–80 years). Agreeableness showed a slight linear decrease in consistency with increasing age. Extraversion, Conscientiousness, Neuroticism, Openness to Experience, and Honesty–Humility exhibited quadratic ‘inverted U’ patterns of rank-order stability. Unlike Agreeableness, the two-year consistency of these other personality dimensions increased from young adulthood towards middle age, then decreased as people progressed toward old age. Implications for personality research and emerging trends are discussed.     

Adversity in adolescence predicts personality trait change from childhood to adulthood

This study examined whether cumulative adversity in adolescence predicted changes in the Big Five traits from childhood to adulthood in the Project Competence Longitudinal Study sample (N = 205) followed from childhood (age 10) through adolescence into adulthood (age 30). Personality traits were measured in childhood through multiple methods and in adulthood by self-report. Cumulative adversity, assessed in adolescence, differentiated independent adversity (likely unrelated to participants’ behavior) from dependent adversity (resulting from participants’ own behavior). Participants’ personality traits were modestly stable over 20 years, although Openness showed greater stability. Independent and dependent adversity predicted increases in Negative Emotionality/Neuroticism, and dependent adversity predicted decreases in Constraint/Conscientiousness and Agreeableness from childhood to adulthood, suggesting that cumulative adversity shapes personality development in young people.     

Cognitive abilities and personality traits in old age across four years: More stability than change

The current study (N = 236) examined stability and change of six cognitive abilities and three personality traits in old age (M = 74.12 years, SD = 4.40) over four years. Furthermore, we investigated whether levels of one domain were related to the other domain (and vice versa) four years later. The results showed a mean–level decline for processing speed and a mean–level increase for neuroticism. Cross–lagged effects indicated that reasoning was related to openness and conscientiousness was related to verbal knowledge four years later. In general, few and weak associations between the two domains were found. The findings showed that the development of cognitive abilities and personality traits in old age is marked more by stability than by change.     

Is empathizing in the E–S theory similar to agreeableness? The relationship between the EQ and SQ and major personality domains

This study investigated the relationship between the Empathy Quotient (EQ) and Systemizing Quotient (SQ) and major personality domains (Neuroticism, Extraversion, Openness to Experience, Agreeableness, Conscientiousness, and Honesty–Humility) using two personality questionnaires: the NEO-FFI and the HEXACO-PI. Participants who responded were 1382 university students for the NEO-FFI, and 842 for the HEXACO-PI, with the EQ and SQ. The results showed almost no relationship between the EQ and SQ and the five-factor personality domains of the NEO-FFI. The regression analysis showed that the NEO-FFI explained only 2–3% of the variance of the EQ/SQ, while in the domains of the HEXACO-PI extraversion moderately correlated with the EQ (r = 0.32) and openness showed the highest correlation with the SQ (r = 0.44). The regression analysis showed that the HEXACO-PI explained 22% of the variance of the EQ and 28% of the variance of the SQ. The strong relationship between the EQ and agreeableness, which was reported as r = 0.75 by Nettle (2007), was hardly found in the results of the NEO-FFI (r = 0.16) and HEXACO-PI (r = 0.17). These results suggest that that empathizing and systemizing, as one-dimensional constructs, are not substantially related to personality, although some weak relationship might be observed between the EQ/SQ and some personality domains.     

The role of executive function,personality and attitudes to risks in explaining self-reported driving behaviour in adolescent and adult male drivers

Young drivers show high levels of risky driving and are over-represented in motor vehicle crash statistics world-wide. As well as personality and attitudinal factors, high rates of risk taking during adolescence may be due to poorly developed executive functions, a result of the slow maturation of the pre-frontal cortex of the brain. This study was undertaken to investigate the roles of executive function, personality, attitudes to risk in relation to self-reported driving behaviour. Adolescent (n = 46, age 16–18 years) and adult (n = 32, 25 years and over) male drivers completed a battery of neuropsychological tests to assess general cognitive ability and executive function, and questionnaires to assess driving history, personality, attitudes to physical and psychological risk as well as questionnaires of self-reported driving behaviour (Driver risk taking and Driver Attitude Questionnaire, DAQ). The adolescent drivers showed poorer executive function, higher levels of impulsivity and risk-taking, lower levels of agreeableness and conscientiousness compared to adult drivers. Regression analyses revealed that attitudes to risk, agreeableness and working memory made unique significant contributions in explaining self-reported driving behaviour. Interestingly though, better working memory was associated with higher levels of self-reported risky driving and more accepting attitudes to risky driving. Together the findings suggest that some aspects of executive function, personality, and attitudes to risk may help to explain self-reported driving behaviour. Whether these findings are relevant to female drivers and apply to on-road driving behaviour should be the focus of future studies.     

The young and the restless: Examining the relationships between age,emerging adulthood variables,and the Dark Triad

The Dark Triad is a set of correlated personality variables (i.e., narcissism, psychopathy, and Machiavellianism) that are related to myriad behaviors. Myriad studies have been conducted to test the relations between the Dark Triad and other personality variables (e.g., the Big 5); however, the developmental correlates have been understudied. In the current study, we examined how markers of emerging adulthood and age predict the Dark Triad traits using a cross-sectional design. Participants (N = 442) of varying ages (M age = 32.99, range = 18–74) completed Dark Triad measures and a validated questionnaire used to assess the degree to which participants believe they have successfully navigated through various facets of emerging adulthood. Emerging adulthood facets (e.g., negativity, other-focused, and feeling in-between) correlated with several Dark Triad traits. Additionally, several emerging adulthood facets mediated the relation between age and the Dark Triad traits; i.e., older participants were lower on the Dark Triad traits because of the successful transition through emerging adulthood. Results are discussed in terms of the Theory of Emerging Adulthood (Arnett, 2000).     

Career Adapt-Abilities Scale in a French-speaking Swiss sample: Psychometric properties and relationships to personality and work engagement

The aim of this study was to analyze the psychometric properties of the Career Adapt-Abilities Scale (CAAS) in a French-speaking Swiss sample and its relationship with personality dimensions and work engagement. The heterogeneous sample of 391 participants (M_age = 39.59, SD = 12.30) completed the CAAS-International and a short version of the Utrecht Work Engagement Scale. To assess personality dimensions, participants completed either the Zuckerman–Kuhlman–Aluja Personality Questionnaire (n = 283) or the NEO-FFI-R (n = 108). The internal consistencies for the four subscales and total scores of the CAAS ranged from good to excellent, and skewness and kurtosis values indicated that scores were normally distributed. Gender differences and correlations with age were small or negligible. Several CFA models confirmed the factor structure of the French version of the CAAS-International, with loadings very similar to the ones observed for the international form. Adaptability was related to different personality dimensions, particularly neuroticism and conscientiousness, and also to work engagement. When predicting work engagement, career adaptability had a significant incremental validity over personality dimensions. Finally, career adaptability partially moderated the relationship between personality and work engagement, suggesting that career adaptability also contributes to regulating the expression of personality dispositions.     

Personality and physical activity: A systematic review and meta-analysis

Whether personality determines physical activity or its outcomes is relevant for theory and public health but has been understudied. We estimated the population correlations between Big-Five personality factors and physical activity and examined whether they varied according to sample characteristics and study features. Database searches were conducted according to PRISMA guidelines, for articles published in the English language prior to November 1st, 2013. Sixty-four studies including a total of 88,400 participants yielded effects (k) for Extraversion (88), Neuroticism (82), Conscientiousness (69), Openness (51) and Agreeableness (52). Significant mean r was found for Extraversion (r = .1076), Neuroticism (r = −.0710), Conscientiousness (r = .1037) and Openness (r = .0344), but not Agreeableness (r = .0020). Effects were moderately heterogeneous (I² range = 44–65%) and varied by sample characteristics (e.g., age, gender, or clinical status) and/or study features (e.g., measure quality or item format). This analysis expands results of previous reviews and provides new support for a relationship between physical activity and Openness. Future studies should use better measures of physical activity and prospective designs, adjust for statistical artifacts, and consider advances in the conceptualization of personality.     

Birth weight and stuttering: Evidence from three birth cohorts

PurposePrevious studies have produced conflicting results with regard to the association between birth weight and developmental stuttering. This study sought to determine whether birth weight was associated with childhood and/or adolescent stuttering in three British birth cohort samples.MethodsLogistic regression analyses were carried out on data from the Millenium Cohort Study (MCS), British Cohort Study (BCS70) and National Child Development Study (NCDS), whose initial cohorts comprised over 56,000 individuals. The outcome variables were parent-reported stuttering in childhood or in adolescence; the predictors, based on prior research, were birth weight, sex, multiple birth status, vocabulary score and mother's level of education. Birth weight was analysed both as a categorical variable (low birth weight, <2500 g; normal range; high birth weight, ≥4000 g) and as a continuous variable. Separate analyses were carried out to determine the impact of birth weight and the other predictors on stuttering during childhood (age 3, 5 and 7 and MCS, BCS70 and NCDS, respectively) or at age 16, when developmental stuttering is likely to be persistent.ResultsNone of the multivariate analyses revealed an association between birth weight and parent-reported stuttering. Sex was a significant predictor of stuttering in all the analyses, with males 1.6–3.6 times more likely than females to stutter.ConclusionOur results suggest that birth weight is not a clinically useful predictor of childhood or persistent stuttering.     

Personality styles in a non-clinical sample: The role of emotion dysregulation and impulsivity

Theories of personality and personality disorders are increasingly considering the centrality of emotion regulation and its dimensions. Impulsivity as well is recognized as a personality trait underlying diverse symptom presentations. Although research in this field has mainly regarded borderline personality disorder, recent studies supported the association of both emotion dysregulation and impulsivity with personality styles across all clusters. In the present study, we sought to extend extant research by investigating the joint contribution of selected difficulties in emotion regulation and impulsivity to traits of four personality styles in a community sample (N = 399, mean age = 37.91, 56.6% males). In particular, we focused on depressive, masochistic, passive-aggressive and sadistic personality styles. Multiple regression analyses showed the unique association of several domains of emotion dysregulation with all personality styles examined. Nonacceptance of emotional response was significantly and positively related with scores of all personality styles. Lack of emotional awareness was also characteristic of different styles. Beyond these similarities, distinct patterns were able to distinguish between externalizing (sadistic and passive-aggressive), and internalizing (depressive and masochistic) traits. Beyond the role of emotion dysregulation, trait impulsivity was also related to masochistic, passive-aggressive, and sadistic traits, independently explaining a significant amount of additional variance.     

Therapy experience in naturalistic observational studies is associated with negative changes in personality

Recent research has shown that personality traits change as a result of clinical therapy, although evidence for this effect is derived from efficacy studies that reflect relatively controlled experimental designs. Little is known about how therapy in real world contexts affects change in personality. In two longitudinal studies (N’s = 1270 and 5217), the present research examined whether personality trait change was associated with therapy experience. Propensity score matching was used to compare trajectories of personality trait change in individuals with and without therapy experiences. Overall, therapy experiences were associated with significant increases in undesirable traits and markers (e.g., chronic stress, depression, neuroticism), and significant decreases in desirable traits (e.g., self-esteem, conscientiousness).     

Beyond conscientiousness: Career optimism and satisfaction with academic major

The study focuses on psychological predictors of academic major satisfaction. According to the career construction theory (Savickas, 2005), vocational personality and career adaptability should generate career satisfaction. In this study, vocational personality was operationalised as Big Five conscientiousness, and career adaptability was operationalised as generalised self-efficacy and career optimism. A sample (N = 529) of university students completed an online survey. The resultant data were used to construct a structural model of the hypothesised relationships among variables. A good fitting model [χ² = 10.454 (7) p = .164; GFI = .993; CFI = .999; RMSEA < .031 (< .001–.066)] indicated that career optimism fully mediated the relationship between conscientiousness and academic major satisfaction. Results were consistent with previous research into personality and academic performance. Moreover, the results highlight the significant role of optimism in satisfaction with career generally, and studies, specifically. Suggestions are made for future research into modelling the relationships according to different academic disciplines and for the potential role of optimism as a learning objective for career education and counseling.     

The mediating role of self-esteem in the relationship between big five personality traits and depressive symptoms among Chinese undergraduate medical students

The objectives of this study were to examine the correlations between big five personality traits and depressive symptoms among Chinese undergraduate medical students, and to explore the mediating role of self-esteem on the correlations. Self-reported questionnaires, including Big Five Inventory, the Center for Epidemiologic Studies Depression Scale, Rosenberg’s Self-Esteem scale, and socio-demographic section were distributed to 2000 undergraduate medical students at four medical colleges and universities in Liaoning province, China, in June 2014. 1738 students became the final subjects. After adjustment for age and gender, agreeableness (β = −0.329) and openness (β = −0.096) were negatively related to depressive symptoms, while neuroticism (β = 0.245) was positively related to the symptoms. Self-esteem functioned as a mediator in the relationship between agreeableness (a * b = −0.154, 95% CI: −0.182, −0.127)/openness (a * b = −0.097, 95% CI: −0.124, −0.069)/neuroticism (a * b = 0.031, 95% CI: 0.007, 0.058) and depressive symptoms. Therefore, identifying at-risk students and undertaking appropriate intervention strategies that focus on both personality traits and self-esteem may be effective in preventing and reducing depressive symptoms among Chinese medical students.     

Cognition and the development of temperament from late childhood to early adolescence

Temperament is related to cognition, but it is unclear whether reciprocal associations exist with early developmental trajectories. Children from the Longitudinal Study of Australian Children (N = 8,677) were assessed over four waves on verbal ability at ages 8/9, nonverbal ability at ages 8/9 and 10/11, and parent-rated temperament every two years from ages 8/9 to 14/15. Latent difference score analyses indicated correlated changes between ages 8/9 and 10/11. Increased nonverbal ability over the first two years was associated with declined reactivity and increased persistence. Latent growth curve models further indicated that nonverbal and verbal ability at baseline were associated with declined reactivity and increased persistence over the six years. These findings suggest bidirectional associations between childhood cognitive ability and temperament development.     

The associations of birth order with personality and intelligence in a representative sample of U.S. high school students

We tested birth order associations with personality traits and intelligence using Project Talent, a representative sample (N = 377,000) of U.S. high school students. Using a between-family design and several background factors (i.e., age, sex, sibship size, parental socio-economic status, and family structure), we were able to control for potential confounds, and estimate the links between birth order and outcomes across several different social categories. In addition to differences between firstborns and laterborns across the entire sample, we also tested birth rank trends in a sub-sample of targets from sibships of three, raised by two parents. Overall, the average absolute association between birth order and personality traits was .02, whereas the one between birth order and intelligence was .04.     

A genetic variant (COMT) coding dopaminergic activity predicts personality traits in healthy elderly

Association studies between the NEO five factor personality inventory and COMT rs4680 have focused on young adults and the results have been inconsistent. However, personality and cortical changes with age may put older adults in a more sensitive range for detecting a relationship. The present study examined associations of COMT rs4680 and personality in older adults.Genetic association analyses were carried out between the NEO and the targeted COMT rs4680 in a large, well-characterized sample of healthy, cognitively normal older adults (N = 616, mean age = 69.26 years).Three significant associations were found: participants with GG genotype showed lower mean scores on Neuroticism (p = 0.039) and higher scores on Agreeableness (p = 0.020) and Conscientiousness (p = 0.006) than participants with AA or AG genotypes.These results suggest that older adults with higher COMT enzymatic activity (GG), therefore lower dopamine level, have lower Neuroticism scores, and higher Agreeableness and Conscientiousness scores. This is consistent with a recent model of phasic and tonic dopamine release suggesting that even though GG genotype is associated with lower tonic dopamine release, the phasic release of dopamine might be optimal for a more adaptive personality profile.     

Older sisters and younger brothers: The impact of siblings on preference for competition

Psychology studies have long argued the possibility that sibling structure, such as birth order and the sex of siblings, shapes one’s personality traits. One of the core issues involved is that of who rates subjects’ personality traits in studies. The present studies (N = 135 in Study 1, N = 232 in Study 2) surpassed the examinations performed in previous studies by obtaining information regarding one of the key personality traits, preference for competition, using a framework developed via experimental economics rather than subjective ratings. Despite the fact that the two studies involved different types of task, we consistently observed that older sisters exerted a significant impact on their younger siblings in both studies. In particular, having an older sister was negatively associated with men’s competitive preferences. We also obtained suggestive evidence that having an older sister was positively associated with women’s competitive preferences. Our results support sibling hypotheses from the perspective of experimental economics.     

Conceptualizing the Dark Triad of personality: Links to Social Symptomatology

The current study examines the conceptualization of the sub-clinical Dark Triad personality traits (Psychopathy, Machiavellianism, and Narcissism; Paulhus & Williams, 2002) by relating them to normal and abnormal personality. Factor analyses using two samples (N₁ = 232, N₂ = 198) showed the Dark Triad traits clearly aggregated with each other, with Social Symptomatology, and with low agreeableness. More detailed analyses found that sub-clinical psychopathy is related to a core of socially malevolent traits and items that reflect self-reported deviant socialization in childhood, alienation from others, interpersonal problems, and impulsivity. For Machiavellianism, these relationships were apparent at the item level but not at the trait level. Narcissism, however, appears to be a more distinct construct that relates to aspects of psychopathology other than Social Symptomatology. Overall, results indicate that the Dark Triad is best conceptualized as a form of disordered personality, with links to low agreeableness.