Trajectories of stability and change in bullying roles were examined through a longitudinal prospective study of 916 school students followed up biannually from age 11 to 17. Perpetrators and victims had relatively stable trajectories with most of the children remaining in the same role over time or becoming uninvolved. Bully/victim was the most…

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…

This study examined associations between perceived popularity trajectories and changes in proactive and reactive aggression in middle adolescence. The sample included 1,374 adolescents from 5 cohorts who were followed from Grade 7 to Grade 9 (49% males, M[subscript age] = 12.67 years, SD = 0.67). Popularity trajectories were identified based on…

The deleterious effects of marital conflict on youth outcomes are well-documented in both cross-sectional and longitudinal studies. To date, longitudinal studies have focused on repeated measures of youths' outcomes and the temporal dynamics of marital conflict have largely been ignored. Marital conflict changes over time as contextual and…

Adolescents form their identities by both accommodating (endorsing) and resisting (challenging) cultural stereotypes. Most research on Black males focuses on how they accommodate to negative stereotypes (e.g., delinquency, aggression), but a growing literature emphasizes how youth resist stereotypes. Semi-structured interviews were analyzed to…

The purpose of the present study is to examine bullying perpetration and social intelligence (SI), which is a sociocognitive characteristic that has been proposed as a possible regulator of traditional and cyberbullying. We compared SI for perpetrators and nonperpetrators of traditional bullying and/or cyberbullying and examined longitudinal…

This study examined the development of adolescent self-reported instrumental-overt, instrumental-relational, reactive-overt, and reactive-relational aggression during middle school ("N" = 384; 12-14 years; 53% boys). Growth modeling indicated average increases in instrumental-relational aggression, and decreases in reactive-overt and…

The formation and maintenance of young adult romantic relationships that are free from violence and are characterized by love, connection, and effective problem-solving have important implications for later well-being and family functioning. In this study, we examined adolescent hostile-aggressive behavior (HAB) and family relationship quality as…

Identity formation is one of the key developmental tasks in adolescence. According to Erikson (1968) experiencing identity uncertainty is normative in adolescence. However, empirical studies investigating identity uncertainty on a daily basis are lacking. Hence, studying individual differences in daily certainty (i.e., identity commitment levels)…

Bullying and victimization occurring in adolescence can have a long-lasting negative impact into adulthood. This study investigates whether conduct problems (CP) and dimensions of psychopathy predict the developmental course of bullying and victimization from ages 12 to 14 among 1,416 Greek-Cypriot adolescents. Results indicate that initial levels…

Background: Antisocial behaviour may partly develop as a consequence of psychopathic personality. However, neither the direction of effects nor the aetiology of the association has previously been clarified. The aim in this study was to investigate the direction of effects between psychopathic personality and antisocial behaviour, and to…

This study investigated the prospective links between sibling aggression and the development of externalizing problems using a multilevel modeling approach with a genetically sensitive design. The sample consisted of 780 adolescents (390 sibling pairs) who participated in 2 waves of the Nonshared Environment in Adolescent Development project.…

Both individual and ecological influences are implicated as factors linked to youth violence. In this paper, we conduct analyses on several databases of 6th-12th grade students in the United States, to explore the linkage of positive relationships, opportunities, skills, and values, called Developmental Assets, to prevention of youth aggressive…

This study investigated the roles of sex, age, and parent-child communication in moderating the association between digital game violence and direct aggression in a two-year longitudinal study. Finnish 12- and 15-year-old adolescents (N = 316) participated in the follow-up survey. As hypothesized, digital game violence was linked to direct…

Used semi-parametric mixture model with boys assessed repeatedly from 6 to 15 years to approximate a continuous distribution of developmental trajectories for aggression, opposition, and hyperactivity. Found that a chronic oppositional trajectory, with other trajectories held constant, led to covert delinquency only. A chronic physical aggression…