“…The results corroborate previous findings indicating that cooperative experiences increase the frequency of prosocial behaviors (Blaney, Stephan, Rosenfield, Aronson, & Sikes, 1977;Eisenberg & Fabes, 1998;Etxebarria et al, 1994;Johnson & Johnson, 1983;Solomon, Watson, Schaps, Battistich, & Solomon, 1990). The mutual responsiveness and shared positive affect typically found in cooperative situations seem to be key elements in the development of prosocial behavior (Kochanska, 2002).…”