“…This debate is the youngest (Ellingsen, Johannesson, Mollerstrom, & Munkhammar, 2012;Hagen & Hammerstein, 2006;Levitt & List, 2007;Weber et al, 2004) -although psychologists (Deutsch, 1957(Deutsch, , 1958(Deutsch, , 1960 and experimental economists (Hoffman & Spitzer, 1985;Hoffman, McCabe, & Smith, 1996) have long known that framing effects are not limited to either changes in valence or to coordination games. For instance, the instructions to non-cooperative games, in which players choose independently and no third party can enforce cooperation, can emphasise either the competitive nature of the situation or the possible group advantage of cooperation.…”