“…Most of the studies involved students (Brooks & Schweitzer, 2011; Day et al, 2009; Fischer & Greitemeyer, 2006; Greitemeyer, 2009a, 2009b; Skulmowski et al, 2014; Strick et al, 2015), while one of them investigated adolescents and teenagers (Halko & Kaustia, 2012) and just one of them included children (Kirschner & Tomasello, 2010). In general, the number of participants was quite small, with five studies having less than 40 participants (Chung et al, 2016; Day et al, 2009; Greitemeyer, 2009b, Study 1; Halko & Kaustia, 2012; Halko et al, 2015), and seven studies with 40 to 60 participants (Greitemeyer, 2009b, Study 2, 3 and 4; Greitemeyer, 2011, Study 5; Moritz et al, 2009; Schulreich et al, 2014). Five studies included 60 to 100 people (Greitemeyer, 2009a; Kirschner & Tomasello, 2010; Kniffin et al, 2016, Study 1; 1 Skulmowski et al, 2014; Strick et al, 2015, Study 1), while four of them involved more than 100 participants (Brooks & Schweitzer, 2011; Fischer & Greitemeyer, 2006, Study 1 and 3; Kniffin et al, 2016, Study 2).…”