Purpose With the widespread use of the Internet and mobile phone, cyberbullying has become a new type of bullying among adolescents. It is of great practical significance to explore the relevant factors affecting cyberbullying for prevention and intervention of adolescents’ cyberbullying. However, few studies have considered the effect of both the family and social factors on cyberbullying. Therefore, the current study examines whether the parent-adolescent conflict as a family factor and deviant peer affiliation as a social factor have an effect on adolescents’ cyberbullying, as well as the role of moral disengagement and gender. Methods A total of 777 middle school students (females = 336; mean age = 13.57; SD = 0.98) were surveyed by using the Parent-child Relationship Questionnaire, Deviant Peer Affiliation Questionnaire, Moral Disengagement Questionnaire and Cyber Bullying Behavior Questionnaire. SPSS21.0 was used to conduct descriptive statistics, Pearson correlation analysis and T -test, PROCESS were used to conduct significance test of moderated mediation effect on the data. Results Parent-adolescent conflict does not directly predict cyberbullying. Moral disengagement played a complete mediating role between parent-adolescent conflict and cyberbullying, and gender played a moderating role between moral disengagement and cyberbullying. Deviant peer affiliation directly predict cyberbullying. Moral disengagement played a partially mediating role between parent-adolescent conflict and cyberbullying, and gender played a moderating role between moral disengagement and cyberbullying. Conclusion Attention should be paid to the effect of moral disengagement on cyberbullying in family and social factors, as well as the role of gender.

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Purpose Adolescent bullying has varying degrees of negative impact on both bullies and victims. Bullying in adolescents is complex, and the influence of individual factors and social factors should not be underestimated. Normative beliefs about aggression play an important role in adolescents’ bullying. However, the mediating and moderating mechanisms underlying this association remain largely unknown. The current study investigated the mediating role of moral disengagement between normative beliefs about aggression and bullying, as well as the moderating role of self-control in this relationship from the perspective of individual cognition. Methods A sample of 491 Chinese adolescents (female = 38.9%; mean age = 13.05 years) were study participants. They completed questionnaires about normative beliefs about aggression, bullying, moral disengagement and self-control. SPSS21.0 statistical software was used to collate the obtained data, analyze descriptive statistics, and carry out reliability analysis and correlation analysis. Results Moral disengagement mediated the relationship between normative beliefs about aggression and bullying ( ab =0.13, 95% CI =[0.07, 0.21]). The association between normative beliefs about aggression and moral disengagement was moderated by self-control ( β =−0.08, t =−2.25, p< 0.05). The association between moral disengagement and bullying was moderated by self-control ( β =−0.09, t =−2.42, p< 0.05). Conclusion Results revealed that moral disengagement mediates the link between normative beliefs about aggression and bullying. Self-control moderated the relationship between normative beliefs about aggression and moral disengagement, and between moral disengagement and bullying.

Adolescence is a high‐risk age for exposure to violent media (EVM) and bullying. Some previous theories and empirical studies have highlighted a moderated mediating model that normative beliefs about aggression (NBA) as a mediator and self‐control (SC) as a moderator for the link between EVM and aggressive behaviors (including bullying behaviors). However, most previous studies analyzed traditional bullying (TB) and cyberbullying (CB) separately, which is not conducive to finding the differences between the two bullying behaviors. Therefore, this study aims to compare the differences between risk prediction models of TB and CB among adolescents. A total of 777 Chinese adolescent students (336 girls; Mage = 13.57 ± 0.98) completed questionnaires including EVM, NBA, TB, CB, and SC. The results showed that: (1) EVM was positively related to adolescent TB/CB; (2) NBA mediated the above relations; and (3) SC buffers the direct effect of EVM on TB and the effect of NBA on TB. However, SC buffers the effect of NBA on adolescent CB but not buffers the direct effect of EVM on CB. This study highlights the necessity of distinguishing offline and online situations in aggressive behavior research. We suggested “online disinhibit hypothesis” would be adopted to explain why protector factors (e.g., SC) do not buffer the link between aggression‐related risk factors (e.g., EVM) and online aggression (e.g., CB).