“…Such victimization is related to psychosomatic symptoms (Gini & Pozzoli, 2013), internalizing and externalizing problems (Reijntjes et al, 2011;Reijntjes, Kamphuis, Prinzie, & Telch, 2010), sleeping problems (Van Geel, Goemans, & Vedder, 2016), and suicidality (Holt et al, 2015). Negative effects are not restricted to the victims of bullying; perpetrators have been found to smoke more and drink more alcohol (Nansel et al, 2001), and to be more likely to carry a weapon than uninvolved children (Van Geel, Vedder, & Tanilon, 2014a). Cyberbullying, a form of bullying wherein the perpetrator uses digital means such as internet or mobile telephones, has more recently attracted the attention of researchers.…”