“…In this context, 15 studies had a reduction of bullying frequency as their main objective, including victimization, perpetration, and/or witnessing (Allen, 2010; Bauer, Lozano, & Rivara, 2007; Bowllan, 2011; Cross et al, 2011, 2012; Hutchings & Clarkson, 2015; Kärnä, Voeten, Little, Poskiparta, Alanen, et al, 2011; Kärnä, Voeten, Little, Poskiparta, Kaljonen, et al, 2011; Macedo et al, 2014; Mendes, 2011; Minton, O'Mahoney, & Conway‐Walsh, 2013; Nocentini & Menesini, 2016; Rock, Hammond, & Rasmussen, 2007; Stan & Beldean, 2014; Wong, Cheng, Ngan, & Ma, 2011). From these 15 studies, 11 also included factors related to bullying occurrence, such as reporting victimization to adults; attitudes from victims, witnesses, and teachers toward bullying; perception of intervention by peers and school staff; and emotions, feelings, and abilities associated with bullying, such as fear, safety, self‐esteem, and empathy (Allen, 2010; Bauer et al, 2007; Bowllan, 2011; Cross et al, 2011, 2012; Kärnä, Voeten, Little, Poskiparta, Kaljonen, et al, 2011; Mendes, 2011; Minton et al, 2013; Nocentini & Menesini, 2016; Rock et al, 2007; Stan & Beldean, 2014).…”