Social media addiction (SMA) is considered a risk factor for aggressive behaviors in adolescents, while its underlying mechanisms remains unclear. In this study, we investigated the possible mediating roles of nighttime social media use and sleep quality in the relationship between SMA and aggressive behaviors. A sample of 773 Italian secondary…

Although cyber victimization has been suggested as a significant risk factor for the development of adolescents' depression, the underlying psychopathological process that mediates this relationship needs further exploration. Based on the psychological inflexibility model, this study aimed to examine cognitive fusion and experiential avoidance as…

This paper introduces the LIDO, or the Low-Inference Discourse Observation tool, that captures discourse moves produced by students and teachers in whole-classroom discussions. Coding methods are described, followed by analyses that explore validity of the LIDO through correlations among LIDO-coded discourse moves and between LIDO scores and…

This study examined relations between intentional self-regulation (ISR) and executive functions (EFs) among 84 Icelandic youth in Grade 6 (mean age 11.7 years; 51% girls) and their contributions to healthy and problematic outcomes a year later. ISR was indicated by the Selection, Optimization and Compensation model (SOC) and Self-Regulated…

This study investigates multiple-level antecedents of cyberbullying victimization among early adolescents. Data from the Health Behavior in School-Aged Children, 2009 to 2010 cohort study in the United States were used. The sample included White, Black, Latino, and Asian adolescents, ages 10-14 (N = 8481). Bivariate analysis, logistic regression,…

This study examined adolescents' perceived paternal and maternal parenting in relation to different types of prosocial behaviors. Adolescent gender and age were considered as moderators. Participants included 439 Grades 7-11 adolescents (55.13% girls) from five secondary schools in Hong Kong. Path analysis indicated that maternal and paternal…

The present study examined the relationship between online disinhibition and adolescents' cyberbullying perpetration and investigated whether empathy and gender would moderate this relationship. A total of 2407 Chinese adolescents aged 11-16 years completed the questionnaires to measure their online disinhibition, empathy, and cyberbullying…

This study examined beliefs about aggression and self-efficacy for nonviolent responses as mediators of longitudinal relations between exposure to violence and physical aggression. Participants were a predominantly African American (79%) sample of 2705 early adolescents from three middle schools within urban neighborhoods with high rates of…

We used latent growth curve analysis to extend research on associations between early puberty and adverse peer relations by examining the role of pubertal timing in the developmental trajectories of peer victimization and offending from early- to mid-adolescence. We made use of three-wave longitudinal data collected annually from a cohort of…

Students who repeat a grade are at a higher risk of dropping out of high school. Previous research has examined this in a methodologically aggregated way (e.g., repeated any grade versus never repeated) or only specific grades/grade ranges (e.g., Kindergarten or elementary) leaving questions about which grades are more detrimental to repeat with…

The goal of this study was to advance the conceptualization and measurement of adolescent popularity by exploring the commonly used composite score (popularity minus unpopularity). We used standardized peer nominations from 4,414 early adolescents (ages [approximately equal to] 12-14 years) from three samples collected in two countries. Popularity…

This study used a cross-lagged panel analysis to explore the effect of impulsivity and academic achievement on the development of suicidal ideation in adolescents using three-time assessments with an interval of 6 months. A total of 211 adolescents (104 boys, 107 girls with a mean age of 13.62 ± 0.68 years in the third assessment) completed the…

We examined the prospective associations between two indicators of mother-youth emotional climate (i.e., maternal affect, dyadic cohesiveness) during a peer problem discussion and youth coping with peer stress following entry into middle school. We also investigated youth baseline respiratory sinus arrhythmia (RSA) as a moderator of these…

This study examined gender differences in a moderated-mediation model examining whether perceived social support moderated depressive symptom and academic achievement mediation pathways from peer victimization to substance use among 1,334 U.S. early adolescents (11-14 years, 50% girls, 51% White). Surveys were administered in schools at three…

This longitudinal study covering two educational transitions examined 1,821 Finnish students' participation in and identification with school and their associations with students' academic achievement and truancy. The students were surveyed (a) at the end of primary school, (b) at the beginning of lower secondary school, (c) at the end of lower…