Social networking platforms, such as WhatsApp, constitute a major part of adolescents’ social lives. Alongside the positive aspects of such platforms, there is a risk of using them as a means for cyberbullying. Schools have become increasingly aware of this risk and are prioritizing fighting cyberbullying through intervention programs, yet few interventions have been studied for their effectiveness. This study reports the results of a wide-scale school-based intervention designed to reduce cyberbullying and improve usage norms in WhatsApp classmates’ groups. Data were collected from 52 classes in 12 public schools in Israel: n = 47 elementary school classes, 4th to 6th grades, and n = 5 middle school classes, 8th grade. A total of 1402 students answered questionnaires pre-intervention (51% females), while 90% of them ( n = 1268, 52% females) answered questionnaires 1 month post-intervention. Results indicated a significant decrease in WhatsApp cyberbullying and a significant improvement in classroom climate. In addition, improvement in WhatsApp usage norms was positively correlated with a decrease in WhatsApp cyberbullying.

In recent years children and adolescents lead their social lives in the virtual world no less than in the real one. Social networking sites such as WhatsApp play a major role as popular social communication platforms. More than 97% of Israeli youth use WhatsApp and are members of WhatsApp classmate groups. The growing use of WhatsApp is accompanied by increased frequency of cyberbullying, that is, intended and repeated aggressive online behavior aimed to inflict harm. Cyberbullying victimization has received a fair amount of attention due to its association with serious psychosocial, affective, behavioral, and academic problems. Although much has been written about cyberbullying on Facebook, literature about WhatsApp and cyberbullying is scarce. Based on a large-scale survey that examined the prevalence and expressions of cyberbullying the current cross-sectional study provides a detailed description of cyberbullying victimization in WhatsApp classmate groups across grade level and gender among Israeli school-age children and adolescents. The study included 4,477 elementary, middle, and high school students in Israel who completed questionnaires regarding cyberbullying

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Based on a sample of 54 Israeli soldiers (51 % non-religious, 49 % religious) surveyed upon their return from combat, this study investigates the moderating role of religiosity as a factor that may strengthen cognitive processing tied to the belief in oneself to persevere (i.e., self-efficacy) after trauma and/or as a factor tied to enhanced external social support that religious individuals in particular may benefit from by their involvement in a religious community. Findings revealed (1) social support was tied to greater resilience within the general sample; (2) religious soldiers were less susceptible to traumatic stress than non-religious soldiers; and (3) religiosity moderated the relationship between self-efficacy and traumatic stress but not the relationship between social support and traumatic stress. Implications of findings are discussed.