The association between involvement in bullying and psychosomatic problems was demonstrated. Given that school bullying is a widespread phenomenon in many countries around the world, the present results suggest that bullying be considered a significant international public health issue.

Two different models have been proposed that describe the bully alternatively as a child lacking in social skills [Crick and Dodge, 1994], or as a cold manipulative individual, who leads gangs to achieve personal goals [Sutton et al., 1999a]. The present study examined the performance of 204 8-11-year-olds in a set of stories that assessed understanding of cognitions and emotions, in relation to their Participant Role in bullying. Moreover, children's understanding of moral emotions and proneness to moral disengagement was assessed. Victims showed some difficulties in the social cognition task, whereas bullies did not. Aggressive children, instead, were found to be more ready to show moral disengagement mechanisms, whereas defenders showed higher levels of moral sensibility. Results are discussed in relation to the two models, and the need for further research into empathy and moral cognition of children involved in bullying episodes is highlighted. Aggr. Behav. 32:528-539, 2006. r

A growing body of research has demonstrated consistent links between Bandura's theory of moral disengagement and aggressive behavior in adults. The present meta-analysis was conducted to summarize the existing literature on the relation between moral disengagement and different types of aggressive behavior among school-age children and adolescents. Twenty-seven independent samples with a total of 17,776 participants (aged 8-18 years) were included in the meta-analysis. Results indicated a positive overall effect (r = .28, 95% CI [.23, .32]), supporting the hypothesis that moral disengagement is a significant correlate of aggressive behavior among children and youth. Analyses of a priori moderators revealed that effect sizes were larger for adolescents as compared to children, for studies that used a revised version of the original Bandura scale, and for studies with shared method variance. Effect sizes did not vary as a function of type of aggressive behavior, gender, or publication status. Results are discussed within the extant literature on moral disengagement and future directions are proposed.

Through structural equation modeling, this study tested a path of relations in which different levels of empathic responsiveness were posited to be differently associated to bullying and defending behavior. Three hundred and eighteen Italian adolescents (142 girls and 176 boys; mean age = 13.2 years) completed the Davis's Interpersonal Reactivity Index [Davis, 1983] for empathy and the Participant role scales [Salmivalli et al., 1996] for bullying and defending behavior. The results revealed that the model fitted the data adequately, but only in the case of boys. As hypothesized, low levels of empathic responsiveness were associated to students' involvement in bullying others. In contrast, empathy was positively associated with actively helping victimized schoolmates. However, the estimates algorithm did not reach convergence with girls' data. The current findings confirm and extend the literature on the relation between empathy, prosociality and aggressive behavior. Educational implications are also discussed.

The literature on participant roles in bullying lacks empirical studies that seek to explain what differentiates defenders from outsiders (or passive bystanders). The present study tested a conceptual model in which two personal characteristics of early adolescent students (empathy and perceived social self‐efficacy) were considered as possible determinants of their participant behavior in bullying episodes. A total of 294 Italian early adolescents (mean age=13.3 years, range: 12–14) participated in the study. The structural equation modeling showed that high levels of empathic responsiveness were positively associated with both active defending and passive bystanding behavior, as assessed through peer nominations. In contrast, high levels of social self‐efficacy were associated with helping behavior, whereas low levels of social self‐efficacy were associated with passive bystanding behavior. Results are discussed in terms of theoretical and practical implications for researchers and educational practitioners.