Purpose: This study aimed to investigate if player tactical skill level and age category influence team performance and player exploratory behavior in tasks with different difficulty levels. Method: In total, 48 youth male soccer players participated in the study (U15, n = 24, mean age = 13.06 [plus or minus] 1.53 years; U17, n = 24, mean age =…

The goal of this article was to examine gender-typed behavior longitudinally and to consider its relationship with sexual orientation in adulthood. Data were from 10,624 respondents who completed Wave 1 (adolescence), Wave 3 (emerging adulthood), and Wave 4 (early adulthood) of the National Longitudinal Study of Adolescent to Adult Health. First,…

This study reaffirms our previous work documenting a higher number of Emergency Department (ED) visits by adolescent females with Autism Spectrum Disorder (ASD) as compared to adolescent males with ASD, as well as significantly more ED visits by older adolescents than younger adolescents with ASD. Combined externalizing and internalizing…

Purpose: The rise of online communication possibilities has revived the debate surrounding the impact of media on political participation, especially with respect to young people who are considered prime users of online communication technologies. Against that background this paper examines the relationship between the use of new and old media and…

Background: Sedentary behavior (SB) is related to unhealthy outcomes and is performed in many contexts, including school. The aim of this study was to identify sociodemographic, biological, and psychosocial correlates of SB performed at school in a sample of adolescents. Methods: Adolescents provided information regarding sex, age, socioeconomic…

The present study examined the joint development of substance use and externalizing problems in early and middle adolescence. First, it was tested whether the relevant groups found in previous studies i.e., those with an early onset, a late onset, and no onset or low levels of risk behavior could be identified, while using a developmental model of…

Previous studies with adults have shown that age has an important influence on laypeople's wisdom theories. However, children's and adolescents' understanding of the concept of wisdom has hardly been investigated. In the current study, 80 children and adolescents completed a questionnaire concerning an event where they had been wise and an event…

Background: While associations between conduct disorder (CD), oppositional defiant disorder (ODD), attention deficit hyperactivity disorder (ADHD), and interpersonal callousness (IC) symptoms and delinquency onset are well established, less is known about whether these characteristics differentiate desisting and persisting delinquency. The current…

Research has supported the existence of distinct behavioral patterns, demographic correlates, and etiologic mechanisms for aggressive (AGG) versus nonaggressive but delinquent (DEL) antisocial behavior. Though behavioral genetic studies have the potential to further crystallize these dimensions, inconsistent results have limited their…

The authors examined internal representations of conditional strategies for a situation of object conflict in 849 adolescents and young adults between the ages of 11 and 19 years. To examine participants' expectations of strategy use, the authors developed questionnaires that depicted a variety of contexts in which 2 people wanted an object that…

It has been hypothesized that sensation seeking and impulsivity, which are often conflated, in fact develop along different timetables and have different neural underpinnings, and that the difference in their timetables helps account for heightened risk taking during adolescence. In order to test these propositions, the authors examined age…

The attention deficit hyperactivity disorder (ADHD) symptom presentation of young adolescents with ADHD was examined in association with the transition to middle school. This study used data collected in the Multimodal Treatment Study of ADHD, which included children between 7 and 9 years of age with a diagnosis of ADHD (n = 258) and grade- and…

Confirmatory factor analyses were conducted of "Diagnostic and Statistical Manual of Mental Disorders", Fourth Edition (DSM-IV) symptoms of common mental disorders derived from structured interviews of a representative sample of 4,049 twin children and adolescents and their adult caretakers. A dimensional model based on the assignment of symptoms…

Examined the relations between aggressive problem-solving strategies and aggressive behavior and the intervening role of social acceptance in that relation in early and late adolescents. Subjects were 1,655 11- and 17-year-olds in Finland. Results show that aggressive problem-solving strategies were significantly, but not very highly, associated…

The age at which young people expected the initiation of certain sexual practices was studied with 522 15- and 16-year olds. There was progression in modal ages indicated from least intimate to more intimate behaviors. There was also a strong relationship between sexual timetables and timetables for autonomy and use of drugs such as alcohol. (SLD)