Very few studies have identified the relationship between chronotype, sleep habits, and bullying/victimization in school and online contexts. The objective of this work is to identify predictors of frequency of bullying/cyberbullying in Portuguese pubescent and adolescent populations, such as chronotype and sleep aspects, controlling for gender,…

Bullying victimization is a very common, complex, and potentially damaging form of violence among children and adolescents. Bullying is defined as unwanted, aggressive behavior, which involves a real or perceived social power imbalance. One in 10 public schools reports at least one case of serious violent crime, such as aggressive bullying,…

Moral disengagement (MD) refers to social-cognitive distortions that allow individuals to sidestep the self-regulatory processes that normally prevent immoral conduct. MD has been linked to bullying in childhood and adolescence, but most studies have used a cross-sectional design. Less is known about the longitudinal link. Therefore, the aim of…

Bystanders play a key role in understanding the phenomenon of cyberbullying (CB). The main aim of this study is to explore longitudinal bidirectional relationships among cyberbystanders' reaction, CB perpetration, and CB justification. Participants were 1,105 adolescents (56.7% girls; M[subscript age] = 13.56, SD = 1.21) who answered self-reported…

Adolescent behavior now occurs offline and online. Frequently studied and treated independently, the relationship between offline problem behaviors and online risk taking is not well understood. This study asked whether there are any problematic behaviors predictive of online risk taking by high school students. Using a 2009 dataset of 2,077 high…

This study explored the relations among peer victimization (i.e., physical, relational, and cyberbullying victimization), learning flow, and academic achievement among elementary school students, using a seven-wave longitudinal design across four consecutive semesters. Participants were 1,440 students from Grades 3 and 4 in China (M[subscript age]…

Peer group integration is a crucial acculturative goal for immigrant adolescents who, in order to reach this goal, may use bullying and/or aggressive behavior. The present study aims to explore the underlying aggression motives by investigating the importance of three motives (anger, power, and affiliation) for five different forms of aggressive…

Background: Peer aggression is defined as acts intended or perceived as intended to cause harm. Most research has focused on either micro or macro-level associations, however, less attention has been given to the collective contributions of both micro and macro levels. Objectives: The present study focuses on verbal, physical, and cyber…

The research aims to examine the relationship between cyber bullying and self-disclosure. Participants of the study were 480 high school students who answered the scales. According to the results, the dimensions of cyber bullying; verbal cyber-aggression and exclusion, impersonation and visual-sexual cyber-aggression are negatively related to…

As researchers and practitioners begin to take a bystander approach toward preventing bullying, which involves a power imbalance between two students, it is important to acknowledge that predictors of bystander intervention may look different in various groups of students. Though school connectedness has been suggested as a predictor, previous…

Few studies have been conducted to perform an in-depth examination of cyberbullying roles and to identify multifaceted factors associated with cyberbullying roles. Using Latent Class Analysis, the current study identified four cyberbullying roles (i.e., cyberbully, cyber victim, cyberbully victim, and noninvolved) based on the data from the…

Cyber aggression has become a growing problem in today's society. It offers convenient opportunities to humiliate, bully, or harass others online. Global studies on cyber aggression found that youths who were aggressed online reported feeling depressed, anxious and afraid. They showed poor academic performance, and experienced eating disorders,…

The present study investigated the effect of descriptive and injunctive norms of peers, parents, and favorite celebrities on adolescents' negative online behavior toward celebrities. The sample consisted of 1,255 adolescents ([X-bar][subscript age] = 14.17, SD = 0.47). Adolescents indicated what their peers, parents, and favorite celebrities think…

Cyber bullying has become more pervasive as a result of advances in communication technology such as email, text messaging, chat rooms, and social media sites. Despite the growth in research on correlates associated with engagement in cyber bullying, few studies test the applicability of criminological theories to explain engagement in cyber…

A total of 3956 children aged 12-13 years who completed the Longitudinal Study of Australian Children (LSAC Wave 5) were studied about their experiences of traditional face-to-face bullying and cyberbullying in the last month. In terms of prevalence, sixty percent of the sample had been involved in traditional bullying as the victim and/or the…