Theo A. Klimstra

Personality Maturation Around the World A Cross-Cultural Examination of Social-Investment Theory

During early adulthood, individuals from different cultures across the world tend to become more agreeable, more conscientious, and less neurotic. Two leading theories offer different explanations for these pervasive age trends: Five-factor theory proposes that personality maturation is largely determined by genetic factors, whereas social-investment theory proposes that personality maturation in early adulthood is largely the result of normative life transitions to adult roles. In the research reported here, we conducted the first systematic cross-cultural test of these theories using data from a large Internet-based sample of young adults from 62 nations (N = 884,328). We found strong evidence for universal personality maturation from early to middle adulthood, yet there were significant cultural differences in age effects on personality traits. Consistent with social-investment theory, results showed that cultures with an earlier onset of adult-role responsibilities were marked by earlier personality maturation.

Come rain or come shine: individual differences in how weather affects mood

There is a widespread belief that weather affects mood. However, few studies have investigated this link, and even less is known about individual differences in peoples responses to the weather. In the current study, we sought to identify weather reactivity types by linking self-reported daily mood across 30 days with objective weather data. We identified four distinct types among 497 adolescents and replicated these types among their mothers. The types were labeled Summer Lovers (better mood with warmer and sunnier weather), Unaffected (weak associations between weather and mood), Summer Haters (worse mood with warmer and sunnier weather), and Rain Haters (particularly bad mood on rainy days). In addition, intergenerational concordance effects were found for two of these types, suggesting that weather reactivity may run in the family. Overall, the large individual differences in how peoples moods were affected by weather reconciles the discrepancy between the generally held beliefs that weather has a substantive effect on mood and findings from previous research indicating that effects of weather on mood are limited or absent.

National and Gender Measurement Invariance of the Utrecht-Management of Identity Commitments Scale (U-MICS) : A 10-Nation Study With University Students

The purpose of this study was to examine the psychometric properties of the Utrecht-Management of Identity Commitments Scale (U-MICS), a self-report measure aimed at assessing identity processes of commitment, in-depth exploration, and reconsideration of commitment. We tested its factor structure in university students from a large array of cultural contexts, including 10 nations located in Europe (i.e., Italy, the Netherlands, Poland, Portugal, Romania, and Switzerland), Middle East (i.e., Turkey), and Asia (i.e., China, Japan, and Taiwan). Furthermore, we tested national and gender measurement invariance. Participants were 6,118 (63.2% females) university students aged from 18 to 25 years (Mage = 20.91 years). Results indicated that the three-factor structure of the U-MICS fitted well in the total sample, in each national group, and in gender groups. Furthermore, national and gender measurement invariance were established. Thus, the U-MICS can be fruitfully applied to study identity in university students from various Western and non-Western contexts.

Identity processes and personality traits and types in adolescence : Directionality of effects and developmental trajectories

Personality traits are hypothesized to be among the most important factors contributing to individual differences in identity development. However, longitudinal studies linking Big Five personality traits to contemporary identity models (in which multiple exploration and commitment processes are distinguished) are largely lacking. To gain more insight in the directionality of effect and the developmental interdependence of the Big Five and identity processes as forwarded in multilayered personality models, the present study assessed personality and identity in 1,037 adolescents 4 times over a period of 3 years. First, using cross-lagged path analysis, Big Five traits emerged as consistent predictors of identity exploration processes, whereas only one significant path from identity exploration to the Big Five was found. Second, using latent class growth analysis, 3 Big Five trajectory classes were identified, resembling the distinctions typically made between resilients, overcontrollers, and undercontrollers. These classes were characterized by different initial levels and (to a lesser extent) rates of change in commitment and exploration processes. In sum, important developmental associations linking personality traits to identity processes were uncovered, emphasizing the potential role of personality traits in identity development. Developmental implications and suggestions for future research are discussed.

Is the generalized anxiety disorder symptom of worry just another form of neuroticism? a 5-year longitudinal study of adolescents from the general population.

OBJECTIVE Generalized anxiety disorder (GAD) is a commonly occurring anxiety disorder that many times is characterized by an onset in adolescence and symptoms that increase in severity into adulthood. Due to the persistent nature of the disorders primary symptom of worry, which appears more related to a personality trait than an anxiety state, the current DSM-IV nosology of GAD has been debated. Recently, evidence is accumulating that suggests that the GAD symptom of worry is strongly related to the personality trait of neuroticism. This study investigates whether the GAD symptom of worry and neuroticism are best explained as 1 general factor or as 2 distinct entities in adolescents. Additionally, the interrelation over time between the GAD symptom of worry and neuroticism in adolescents is examined. METHOD Dutch secondary school adolescents from the general community were prospectively studied annually for 5 years. The adolescent population consisted of 923 early adolescents (49% girls) and 390 middle adolescents (57% girls), with mean ages of 12 and 16 years, respectively, on the first measurement wave. At all 5 waves, the adolescents completed self-rated measures of GAD and neurotic symptoms. RESULTS Confirmatory factor analyses established that the GAD symptom of worry and neuroticism are 2 distinct entities, and structural equation modeling demonstrated very strong interrelated properties between these 2 entities. These findings did not differ between the adolescent sex and age groups. CONCLUSIONS The findings suggest that the GAD symptom of worry is more akin to a personality trait than an anxiety state in adolescents, which may hold implications for the current nosology and treatment of GAD.

Associations of identity dimensions with big five personality domains and facets

Personality is among the most important factors contributing to individual differences in identity formation. However, previous studies mainly focused on broad personality domains and neglected more specific facets. In addition, it has only recently been recognized that identity formation is guided by multiple types of commitment and exploration. The present study aimed to remedy these limitations by relating the 30 personality facets of the NEO–PI–3 to five identity dimensions. In general, identity formation was especially facilitated by high levels of Conscientiousness and, to a lesser extent, also by high levels of Extraversion and low levels of Neuroticism. Openness and Agreeableness predicted greater involvement in both the positive side (i.e. exploration in breadth and depth) and negative side (i.e. ruminative exploration) of the exploration process. Personality facets and their overarching domains, as well as facets underlying the same domain, were often differentially associated with identity dimensions. Additionally, we found that some personality facets both have bright and dark sides, as they predicted both proactive identity work and a weakened sense of identity. Overall, the present study underscores the utility of multidimensional models of identity formation and points to the benefits of considering personality facets in addition to broad domains. Copyright

Personality traits, loneliness, and attitudes toward aloneness in adolescence

Within a dual-level model of personality, loneliness, and attitudes toward aloneness can be regarded as phase-specific adaptations that are influenced by personality traits. Therefore, we examined the associations between personality traits (i.e., the Big Five, sociotropy, and autonomy), loneliness, and attitudes toward aloneness in two samples of late adolescents (N = 1388 and N = 419). A specific pattern of associations was found that replicated across samples. Lower scores on agreeableness and stronger concerns about independence (i.e., greater autonomy) were positive predictors of both peer-related and parent-related loneliness. Extraversion was a predictor of lower affinity for and greater aversion to aloneness. The other personality traits were predictors of a particular type of loneliness or a specific attitude toward aloneness.

Personal Identity in College and the Work Context: Developmental Trajectories and Psychosocial Functioning

Personal identity formation represents a core developmental challenge for adolescents and young adults. Because much of the identity literature focuses on college students, it is necessary to conduct a detailed inquiry into the ways in which specific commitment and exploration processes develop over time for college students and for employed individuals. Two samples (456 college students and 318 employed individuals) were used to identify identity status trajectories over time and to examine external correlates of these trajectories (i.e. depressive symptoms, self–esteem, identity centrality, community integration, and sense of adulthood). Similar identity trajectories emerged in both college students and employed individuals. Four of these trajectories corresponded to Marcias identity statuses. In addition, apart from the ‘classical’ or troubled diffusion trajectory, a carefree diffusion trajectory was also obtained. Whereas individuals on an identity–achieved pathway fared best in terms of the outcome measures, individuals in the troubled diffusion trajectory fared worst in terms of self–esteem, depressive symptoms, and community integration over time. Implications and suggestions for future research are discussed. Copyright

IS ADOLESCENT GENERALIZED ANXIETY DISORDER A MAGNET FOR NEGATIVE PARENTAL INTERPERSONAL BEHAVIORS

Previous studies have found that perceived parental interpersonal interaction behaviors, such as rejection, overcontrol, and negative attachment behaviors, increase adolescent generalized anxiety disorder (GAD) symptoms. However, most of these studies have been cross‐sectional, as opposed to longitudinal, and have examined these perceived parental interaction behaviors individually. Hence, the goal of this longitudinal study is to examine these perceived parental behaviors and adolescent GAD symptoms together, in one model, to examine the unique effects each has on one another.

Personal identity in Belgium and The Netherlands

This chapter provides an overview of research on personal identity formation in the Low Countries (Belgium and The Netherlands). First we describe the broader societal context and specificities of Belgium and The Netherlands, then we move to a historical overview of the identity models that have been developed in these countries. Next, we discuss longitudinal findings on personal identity formation and the factors that are associated with individual differences in identity processes. Because both countries are ethnically diverse and Belgium is divided into Dutch-speaking and French-speaking regions, we also discuss the importance of social identity processes.