Data from 53 focus groups, which involved students from 10 to 18 years old, show that youngsters often interpret "cyberbullying" as "Internet bullying" and associate the phenomenon with a wide range of practices. In order to be considered "true" cyberbullying, these practices must meet several criteria. They should be intended to hurt (by the perpetrator) and perceived as hurtful (by the victim); be part of a repetitive pattern of negative offline or online actions; and be performed in a relationship characterized by a power imbalance (based on "real-life" power criteria, such as physical strength or age, and/or on ICT-related criteria such as technological know-how and anonymity).

A survey among 2052 primary and secondary school children reveals that cyberbullying among youngsters is not a marginal problem. However, there are discrepancies between the prevalence figures based on direct measurement versus indirect measurement of cyberbullying. Youngsters who have bullied someone via the internet or mobile phone during the last three months are younger, and are more often victims and bystanders of bullying via the internet or mobile phone, and are more often the perpetrators of traditional bullying. Youngsters who have been bullied via the internet or mobile phone during the last three months are more dependent upon the internet, feel less popular, take more internet-related risks, are more often a bystander and perpetrator of internet and mobile phone bullying, and are less often a perpetrator and more often a victim of traditional bullying. The implications for future research into cyberbullying and for cyberbullying prevention strategies are discussed.

Several systematic reviews have described health-promoting effects of serious games but so far no meta-analysis has been reported. This paper presents a meta-analysis of 54 serious digital game studies for healthy lifestyle promotion, in which we investigated the overall effectiveness of serious digital games on healthy lifestyle promotion outcomes and the role of theoretically and clinically important moderators. Findings showed serious games have small positive effects on healthy lifestyles (g=0.260, 95% CI 0.148; 0.373) and their determinants (g=0.334, 95% CI 0.260; 0.407), especially for knowledge. Effects on clinical outcomes were significant, but much smaller (g=0.079, 95% CI 0.038; 0.120). Long-term effects were maintained for all outcomes except for behavior. Serious games are best individually tailored to both socio-demographic and change need information, and benefit from a strong focus on game theories or a dual theoretical foundation in both behavioral prediction and game theories. They can be effective either as a stand-alone or multi-component programs, and appeal to populations regardless of age and gender. Given that effects of games remain heterogeneous, further exploration of which game features create larger effects are needed.

This study explores behavioral determinants of self-reported cyberbullying bystander behavior from a behavioral change theoretical perspective, to provide levers for interventions. Nine focus groups were conducted with 61 young adolescents (aged 12-16 years, 52% girls). Assertive defending, reporting to others, providing advice, and seeking support were the most mentioned behaviors. Self-reported bystander behavior heavily depended on contextual factors, and should not be considered a fixed participant role. Bystanders preferred to handle cyberbullying offline and in person, and comforting the victim was considered more feasible than facing the bully. Most prevailing behavioral determinants to defend or support the victim were low moral disengagement, that the victim is an ingroup member, and that the bystander is popular. Youngsters felt they received little encouragement from their environment to perform positive bystanding behavior, since peers have a high acceptance for not defending and perceived parental support for defending behavior is largely lacking. These results suggest multilevel models for cyberbullying research, and interventions are needed. With much previous research into cyberbullying insufficiently founded in theoretical models, the employed framework of the Integrative Model and Social Cognitive Theory may inspire future studies into bystander behavior.

Cyberbullying on social network sites : an experimental study into bystanders' behavioral intentions to help the victim or reinforce the bully

Background: Positive bystander behavior in cyberbullying among adolescents may effectively mitigate cyberbullying and its harm for the victim. Limited, scattered, and sometimes only qualitative research is available on predictors of positive (e.g. defending, comforting or reporting) and negative (e.g. passive bystanding, joining, reinforcing) bystander behavior in cyberbullying. A multidimensional model and multilevel analysis were therefore applied in this study. Methods: A sample of 1979 adolescents in 7th -9th grade, in 16 schools and 158 classes participated in the study. Analyses were performed in MLwiN 2.32. Results: Analyses confirmed the multifaceted nature of bystander behavior and behavioral intention. No school level effects, and only limited class effects were found. Strongest individual predictors of positive bystander behavior were a positive intention, and friendship with the victim. Intention for positive bystander behavior was most predicted by positive outcome expectations of their actions for the victim. Negative bystander behavior was most predicted by intentions for negative behavior, and moral disengagement attitudes. Intentions to act as a negative bystander were most predicted by positive attitudes towards passive bystanding and a lack of skills (social, empathic, coping). Moral disengagement at classroom level also predicted positive behavior and behavioral intentions, and negative behavioral intentions, but not negative behavior. Information days for pupils on cyberbullying was a significant school-level predictor of the intention to act as a positive bystander. Conclusions: Future research and interventions should take the multidimensional nature of cyberbullying bystander behavior into account. Implications for research and practice are discussed.

In this article, we investigated several determinants of bystanders' reactive behaviors when confronted with cyberbullying using self-reported data from 2,333 Flemish 9-16 year olds. Structural equation modeling showed that adolescents that had joined in on the cyberbullying were older, had lower levels of empathy and were more likely to have been involved in cyberbullying or traditional bullying as perpetrators. Adolescents who had helped the victim were younger, had higher levels of empathy and were more likely to have been a victim of cyberbullying or traditional bullying in the past months. Adolescents that did nothing when they witnessed cyberbullying, were also older, showed lower levels of empathy and were less likely to have been a victim of traditional bullying. Social anxiety was not related to joining in, helping and remaining passive. In the second part of the analysis, we found that bystanders' passive behavior could be explained in more detail by moral disengagement theory and other contextual factors. In the discussion, the implications of the findings for research on cyberbullying are addressed.

Previous research has suggested that social anxiety is associated with victimization and perpetration of (cyber)bullying. The direction and causality of this relationship has not yet been empirically supported for both traditional and cyberbullying involvement. This study examined short-term longitudinal associations between feelings of social anxiety and involvement in traditional bullying and cyberbullying among 2128 adolescents aged 10-17 (56.6 % girls). A cross-lagged panel analysis provided evidence for the contribution of social anxiety to later victimization of bullying, both on- and off-line. The possibility of a reciprocal relationship was also examined, although it was not supported. Furthermore, longitudinal bidirectional relationships between social anxiety and the perpetration of bullying were investigated. Only one significant longitudinal association was found: the perpetration of traditional bullying predicted subsequent higher levels of social anxiety. The implications of these findings are discussed.