Associations between adolescent social media use and well-being are inconclusive, and studies using rigorous methodologies and objective measures are needed. Additionally, attention on what individual differences may moderate linkages between social media and well-being is necessary. We tested 1) how daily social media use (assessed via…

The complexity of interactions in team sports requires players to have excellent technical skills. The purpose of this study was to longitudinally investigate the predictive value of motor competence (MC) on soccer-specific skills development. Participants were n = 79 boys, aged between 5.89 and 14.63 years at baseline followed for 3 consecutive…

Reading is one of many things vying for young people's attention. In the case of volitional reading, young people between 8 and 15 are following trends of less enjoyment of reading and declining time spent reading. There are complex explanations for patterns of decline in their volitional reading related to how choice is afforded within social and…

The present study aimed to test if perceived pubertal timing was related to marijuana and alcohol use through deviant peer affiliation. Additionally, we examined if the deviant peer pathway was moderated by impulsiveness, gender, or both. Data were collected from 342 youth, most of whom had a family history of substance use disorder. Youth…

Purpose: Follow-up studies of children diagnosed with autism spectrum disorder (ASD) in early childhood that focus on friendship formation during adolescence are scarce. The present study focused on exploring characteristics possibly related to the ability to establish friendships during adolescence among children diagnosed with ASD in…

Identity research focuses on multiple processes capturing how adolescents form and maintain a sense of self. However, identity content (the "what" of identity) might impact associations between identity and the association with well-being. We examined this potential role of content (i.e., valence and life domain) in two studies, focusing…

Background: Adolescents are required to take increased responsibility for their health. Although health literacy is implicated in adults' health decision-making and health behaviors, little is known about adolescents' health literacy and its relationship to their health behaviors. Furthermore, adolescent health literacy research overlooks…

The cross-sectional study aimed to examine the relationships between motives for smartphone use, family satisfaction, loneliness, grade point average (GPA), and problematic smartphone use (PSU). It included 519 elementary school students aged 12-16 years (M = 13.87, SD = 1.01). The authors used the Smartphone Addiction Scale, the Smartphone Usage…

This four-wave longitudinal study among 698 Chinese early adolescents explored (1) how personal identity coherence and confusion develop; and (2) whether parenting style and peer relationships (i.e., close friend relationships and peer preference) were related to personal identity development. Participants (M[subscript age] = 11.39 yrs.,…

This study tested an empirical model of the relationship between "Personal Positive Youth Development" (PPYD) and two contextual factors: "Positive Parenting" (PP), and "Perception of the Climate and Functioning of the School" (PcfS). The hypothesis tested was that a positive relationship with parents and a positive…

Purpose: Prior work developed a shortened 16-item version of the Social Responsiveness Scale (SRS), a quantitative measure of social communication and autism spectrum disorder (ASD)-related traits. However, its properties for use in risk factor estimation have not been fully tested compared to the full SRS. We compared the associations between…

Urban adolescents experience high rates of exposure to community violence, which is associated with sleep problems. However, less is known about the prospective relationships between community violence exposure and sleep problems across adolescence. This study investigated reciprocal relationships between community violence exposure and sleep…

Perfectionism is a multidimensional personality trait whose facets differentially relate to indicators of psychological functioning, such as global self-esteem. There has been some theoretical disagreement whether perfectionism affects global self-esteem, or vice versa. This question merits renewed attention due to increasing efforts to prevent…

This study using PROSPER data (N = 977, age 11.5-age 15) investigated the longitudinal within-family associations between parent reported parental monitoring and adolescent aggression. Importantly, this study is the first one to examine parent gender and adolescent gender differences on these within-family associations. Results differed between…

Temperament and externalizing problems are closely linked, but research on how they codevelop across adolescence remains sparse and equivocal. Reinforcement sensitivity theory (RST) provides a useful framework for understanding temperament and externalizing problems associations. During adolescence, oppositional problems are posited to be linked…