“…However, by almost exclusively attributing the causes of bullying to the bully or the victim, teenagers risk overlooking social psychological and sociological factors such as group processes and peer pressure (e.g., Burns et al 2008;Hamarus and Kaikkonen 2008), group norms (e.g., Duffy and Nesdale 2009;Salmivalli and Voeten 2004), labeling and stigma processes, social inhibition (e.g., bystander effect), social facilitation, moral disengagement (e.g., moral justifications, diffusion of social responsibility, dehumanization, and blaming the victim; e.g., Bandura 1999), instability in peer networks (e.g., Neal 2007), different participation roles in bullying situations (e.g., Salmivalli et al 1996), gender and heterosexual hegemony (e.g., Neal 2007;Phoenix et al 2003; also see Thornberg 2011), and reinforcing mechanisms operating in the peer group or school class. Overlooking such factors might in turn diminish students' awareness of their own impact and responsibility as bystanders as well as bullies.…”