Changing dynamics in problematic personality: A multiwave longitudinal study of the relationship between shyness and aggressiveness from childhood to early adulthood

This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.The present longitudinal study investigated cascade effects linking the longitudinal trajectories of shyness and aggressiveness between age 4 and 23 and individual differences in this longitudinal relationship. Results demonstrated that there were cascade effects from shyness to adjacent measures of aggressiveness at three moments in time, and that the dynamics of these relationships changed over time. Children who were shy at age 6 became less aggressive at age 7 and the same effect was found between age 8 and age 10. From adolescence to early adulthood, the direction of the relationship changed and shy adolescents at age 17 became increasingly aggressive 5 years later. Interindividual differences were found in the latter cascade effect in that shyness at age 17 only predicted an increase in aggressiveness at age 23 for adolescents receiving low levels of support from their parents and for adolescents spending little time in part-time work. Together, findings suggest the importance of examining the development of normal variations in personality and personality disorders from a developmental perspective and taking into account person–environment interactions.Peer Reviewe

Формування первинного капіталу в умовах кризи управління українською промисловістю (1991–1998 рр.)

Стаття присвячена історії початкового періоду ринкової трансформації в українській промисловості. Особлива увага зосереджена на формуванні первинного приватного капіталу в Україні. Розглянуті, зокрема, основні моделі цього процесу в історичній ретроспективі.The article deals with the history of Ukrainian industry market transformation, its initial stage in particular. Special attention has been paid to the private capital accumulation in Ukraine. The main models of this process have been studied in the historical retrospection

Reciprocal Associations between Parenting Challenges and Parents' Personality Development in Young and Middle Adulthood

Having children affects many aspects of people's lives. However, it remains unclear to what degree the challenges that come along with having children are associated with parents' personality development. We addressed this question in two studies by investigating the relationship between parenting challenges and personality development in mothers of newborns (Study 1, N = 556) and the reciprocal associations between (mastering) parenting challenges and personality development in parents of adolescents (Study 2, N = 548 mothers and 460 fathers). In Study 1, we found the stress of having a newborn baby to be associated with declines in maternal Agreeableness, Conscientiousness, and Emotional Stability. Parenting challenges were also related to personality development in parents of adolescent children in Study 2, with parent–child conflict being reciprocally associated with decreases in Conscientiousness and Emotional Stability. Mastering parenting challenges in the form of high parenting self-efficacy, on the other hand, was found to be associated with increases in Agreeableness, Conscientiousness, and Emotional Stability, and vice versa. In sum, our results suggest that mastering the challenges associated with the social role of parenthood is one of the mechanisms underlying personality development in young and middle adulthood

Age and gender differences in narcissism: A comprehensive study across eight measures and over 250,000 participants

Age and gender differences in narcissism have been studied often. However, considering the rich history of narcissism research accompanied by its diverging conceptualizations, little is known about age and gender differences across various narcissism measures. The present study investigated age and gender differences and their interactions across eight widely used narcissism instruments (i.e., Narcissistic Personality Inventory, Hypersensitive Narcissism Scale, Dirty Dozen, Psychological Entitlement Scale, Narcissistic Personality Disorder Symptoms from the Diagnostic and Statistical Manual of Mental Disorders, Version IV, Narcissistic Admiration and Rivalry Questionnaire-Short Form, Single-Item Narcissism Scale, and brief version of the Pathological Narcissism Inventory). The findings of Study 1 (N = 5,736) revealed heterogeneity in how strongly the measures are correlated. Some instruments loaded clearly on one of the three factors proposed by previous research (i.e., Neuroticism, Extraversion, Antagonism), while others cross-loaded across factors and in distinct ways. Cross-sectional analyses using each measure and meta-analytic results across all measures (Study 2) with a total sample of 270,029 participants suggest consistent linear age effects (random effects meta-analytic effect of r = -.104), with narcissism being highest in young adulthood. Consistent gender differences also emerged (random effects meta-analytic effect was -.079), such that men scored higher in narcissism than women. Quadratic age effects and Age × Gender effects were generally very small and inconsistent. We conclude that despite the various conceptualizations of narcissism, age and gender differences are generalizable across the eight measures used in the present study. However, their size varied based on the instrument used. We discuss the sources of this heterogeneity and the potential mechanisms for age and gender differences

Nanocolloidal albumin-IRDye 800CW: a near-infrared fluorescent tracer with optimal retention in the sentinel lymph node

Purpose: At present, the only approved fluorescent tracer for clinical near-infrared fluorescence-guided sentinel node (SN) detection is indocyanine green (ICG), but the use of this tracer is limited due to its poor retention in the SN resulting in the detection of higher tier nodes. We describe the development and characterization of a next-generation fluorescent tracer, nanocolloidal albumin-IRDye 800CW that has optimal properties for clinical SN detection Methods: The fluorescent dye IRDye 800CW was covalently coupled to colloidal human serum albumin (HSA) particles present in the labelling kit Nanocoll in a manner compliant with current Good Manufacturing Practice. Characterization of nanocolloidal albumin-IRDye 800CW included determination of conjugation efficiency, purity, stability and particle size. Quantum yield was determined in serum and compared to that of ICG. For in vivo evaluation a lymphogenic metastatic tumour model in rabbits was used. Fluorescence imaging was performed directly after peritumoral injection of nanocolloidal albumin-IRDye 800CW or the reference ICG/HSA (i.e. ICG mixed with HSA), and was repeated after 24 h, after which fluorescent lymph nodes were excised. Results: Conjugation of IRDye 800CW to nanocolloidal albumin was always about 50% efficient and resulted in a stable and pure product without affecting the particle size of the nanocolloidal albumin. The quantum yield of nanocolloidal albumin-IRDye 800CW was similar to that of ICG. In vivo evaluation revealed noninvasive detection of the SN within 5 min of injection of either nanocolloidal albumin-IRDye 800CW or ICG/HSA. No decrease in the fluorescence signal from SN was observed 24 h after injection of the nanocolloidal albumin-IRDye 800CW, while a strong decrease or complete disappearance of the fluorescence signal was seen 24 h after injection of ICG/HSA. Fluorescence-guided SN biopsy was very easy. Conclusion: Nanocolloidal albumin-IRDye 800CW is a promising fluorescent tracer with optimal kinetic features for SN detection. © The Author(s) 2012

Predictive effects of social anxiety on increases in future peer victimization for a community sample of middle-school youth

This longitudinal study focused on clarifying the direction of effects between social anxiety and victimization in a community-based sample. In addition, we studied the moderating effect of gender on this association. A total of 1,649 children (45% boys, approximately 12 years old) of 65 secondary-school classes participated in the study. Self-reports and peer nomination data of victimization as well as self-reports of social anxiety were gathered in the fall of Grade 1 (T1, wave one) and in the spring of Grade 1 (T2, wave 2). Latent multiple-group cross-lagged analyses were conducted. Results showed that higher social anxiety scores predicted incremental change in future peer- and self-reported victimization in boys, but not in girls, over and above the stability of victimization. Reverse cross-lagged effects of victimization predicting incremental change in future social anxiety, were not found. Although gender differences were significant, they were small

Predictive effects of social anxiety on increases in future peer victimization for a community sample of middle-school youth

This longitudinal study focused on clarifying the direction of effects between social anxiety and victimization in a community-based sample. In addition, we studied the moderating effect of gender on this association. A total of 1,649 children (45% boys, approximately 12 years old) of 65 secondary-school classes participated in the study. Self-reports and peer nomination data of victimization as well as self-reports of social anxiety were gathered in the fall of Grade 1 (T1, wave one) and in the spring of Grade 1 (T2, wave 2). Latent multiple-group cross-lagged analyses were conducted. Results showed that higher social anxiety scores predicted incremental change in future peer- and self-reported victimization in boys, but not in girls, over and above the stability of victimization. Reverse cross-lagged effects of victimization predicting incremental change in future social anxiety, were not found. Although gender differences were significant, they were small

It takes two: a longitudinal dyadic study on predictors of fertility outcomes

OBJECTIVE: Although previous studies have found personality traits to be associated with reproductive behavior, it remains unclear whether there are dyadic associations between partners' personality and couples' decisional process to have children. The aim of the present study was to investigate the associations between partners' personality, parenthood expectations and intentions, and the couple's fertility outcomes one year later. METHOD: We used dyadic longitudinal data from 2,482 couples with a mean age of 32.7 years (SD = 5.9) participating in the Panel Analysis of Intimate Relationships and Family Dynamics (PAIRFAM). RESULTS: Self-esteem, shyness, and aggressiveness of both partners were related to one's own and one's partner's expectations about parenthood. These expectations were associated with one's own and one's partner's intentions to become a parent, which in turn predicted the couple's actual fertility outcomes. Personality traits of both partners were directly associated with the fertility outcome, with self-esteem of both partners and male aggressiveness predicting the couple's decision to have their first child. The effect of self-esteem on the decision to become a parent was mediated by the partner's intention. CONCLUSIONS: In sum, our findings stress the importance of psychological factors in fertility outcomes and emphasize the role of dyadic processes

Linking Stressful Experiences and Psychological Problems: The Role of Self-Esteem

Stressful experiences have repeatedly been related to psychological problems. The current study extends previous work on stress and psychological problems by examining the link between stressful experiences and both internalizing (INT) and externalizing (EXT) problems. Additionally, individual differences are investigated by testing the moderating role of self-esteem. Questionnaire data of 750 adolescents aged 12–18 were collected and analyzed using multiple regression analyses. Analyses were controlled for sex and socioeconomic status. Results indicated that adolescents who report more stressful experiences are more likely to experience both INT and EXT problems, and these relationships were stronger for adolescents with low self-esteem. Post hoc analyses (e.g., different thresholds for determining stressful experiences) support the robustness of our findings. The findings on self-esteem emphasize the importance of taking individual differences into account in the relation between stressful experiences and psychological problems. The results can be seen as a next step in cross-sectional research

High, low, and in between: Self-esteem development from middle childhood to young adulthood

We describe self-esteem development in a German sample (N = 240, 48% female) followed longitudinally from middle childhood to young adulthood, using data spanning 20 years. Data from the Self-Perception Profile for Children ( Harter, 1985) and the Self-Description Questionnaire III (Marsh & O’Neill, 1985) were linked using item response theory methods. Rank-order stability was high in middle childhood, low in adolescence, and highest in young adulthood. Mean-levels were relatively high in middle childhood, decreased into adolescence, but increased into young adulthood. Early childhood shyness and aggressiveness as rated by parents, teachers, and observers did not influence the self-esteem trajectory. We provide the first longitudinal evidence for the self-esteem trajectory from middle childhood to young adulthood, replicating and extending previous findings