ABSTRACT
Recent studies indicate that approximately 20-35% of adolescents report involvement in traditional, offline bullying either as a bully, a victim or both [1]. Bullying can be defined as an aggressive act that is carried out by a group or an individual repeatedly and over time against a victim who cannot easily defend himself or herself [2]. Traditionally, four main types of bullying are distinguished: physical (e.g., assault), verbal (e.g., threats), relational (e.g., social exclusion) and indirect (e.g., spreading rumors) [3]. With the increased use of Internet and mobile phones, a new form of bully-
ing has emerged, often labeled “cyber bullying” [3]–[5]. In cyber bullying, aggression occurs via electronic forms of contact [6].
