Solitude occurs from childhood to old age. In this special issue introduction, we offer a lifespan perspective on matters of solitude with the aim to point to pertinent issues in the field. We propose that solitude serves important functions that may vary across different times in life and that solitude needs to be considered in the context in…

Prediction from early development to later achievement has the potential to improve clinical and educational service delivery as well as to inform developmental theory. In this longitudinal study, we asked how well can educational achievement measured in the final year (Grade 9, age 15) of compulsory education--both overall and for outcomes in the…

Studies have demonstrated that being bullied in childhood may have long-term associations with lower psychological well-being in adulthood. However, although bullying incidents frequently target the victim's body and appearance, research has overlooked studying victims' long-term body image development and risk of engaging in disordered eating…

Children's and adolescents' narratives of interpersonal experiences can inform our understanding of developmental shifts in the use of personhood concepts. We present results from two studies ("n"s = 90, 112) with children aged five to 16 years. In the first study, children were asked to describe one positive and another negative…

Sentiment analysis is a computational method that automatically analyzes the valence of massive quantities of text. Basic sentiment analysis involves extracting and counting emotionally-laden keywords from passages of text (e.g., "hate," "love," "happy," "sad"). This study describes using sentiment analysis…

The present study examined the concurrent and prospective, longitudinal effects of childhood negative emotionality and self-regulation on allostatic load (AL), a physiological indicator of chronic stress. We hypothesized that negative emotionality in combination with poor self-regulation would predict elevated AL. Mothers reported on children's…

Aggressive behaviours in adolescence often originate in early development. This study tested three longitudinal pathways starting in early childhood, in a sample of 325 Belgian participants (162 girls) assessed every 1 or 2 years from birth through age 14. Structural equation models supported the "mother early dissatisfaction" pathway…

Dysregulated cortisol is a risk factor for poor health outcomes. Children of distressed mothers exhibit dysregulated cortisol, yet it is unclear whether maternal distress predicts cortisol activity in later developmental stages. This longitudinal study examined the prospective relation between maternal distress during late childhood (9-12 years)…

The study examined the contribution of reinforcement sensitivity to childhood personality at three levels of the hierarchical structure, mid-level traits, the Big Five and two higher-order factors, and the moderating role of sex and age in a sample of 3-18-year-olds. The canonical correlation analyses indicated that reinforcement sensitivity and…

The present study examines two childhood markers of self-regulation, ego control and ego resiliency, as promotive factors for the development of global adjustment and as risk factors for the development of internalizing and externalizing behavior problems in a high-risk sample. Teachers and observers rated ego control and ego resiliency when…

Some pupils already show unexcused, illegal, surreptitious absences in elementary education or the first years of secondary education. Are weak social bonds (see also Hirschi, 1969) and a lack of self-control (Gottfredson & Hirschi, 1990) indicative of truancy at an early age? Of the children in our sample, 5% were persistent truants in late…

The aim of this study was to explore child and adolescent personality in the Russian culture, addressing gender and age differences, and to examine personality and family effects on children's Internalizing and Externalizing problems. Parents of 1,640 Russian children aged 3-18 years completed the Inventory of Child Individual Differences…

Individuation in relation to father and mother is one of the key developmental tasks of adolescence, and has been conceptualized as gaining autonomy while maintaining relatedness to parents. Research on high-conflict, divorced and step-families suggests that specific stressors in these family types may compromise successful individuation by…

This study investigates whether attachment quality at ages 1, 6 and 16 is related to autonomy and relatedness behavior in adolescence. In a follow-up of the Regensburg Longitudinal Study, forty-three 16-year-old adolescents and their mothers were assessed in a revealed differences task and a planning a vacation task. Attachment was assessed during…

Investigates developmental change in inter- and intrahemispheric transfer of tactile information in two experiments with 74 and 77 subjects aged 4, 6, 10, and 20 years. Results indicate a developmental improvement in inter- and intrahemispheric transfer of tactile information. (RJC)