Title Humans expect generosity
Authors BRAÑAS GARZA, PABLO ERNESTO, Rodriguez-Lara, Ismael, Sanchez, Angel, BRAÑAS GARZA, PABLO ERNESTO
External publication No
Means Sci Rep
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 4.12200
SJR Impact 1.53300
Area International
Publication date 14/02/2017
ISI 000393941200001
DOI 10.1038/srep42446
Abstract Mechanisms supporting human ultra-cooperativeness are very much subject to debate. One psychological feature likely to be relevant is the formation of expectations, particularly about receiving cooperative or generous behavior from others. Without such expectations, social life will be seriously impeded and, in turn, expectations leading to satisfactory interactions can become norms and institutionalize cooperation. In this paper, we assess people's expectations of generosity in a series of controlled experiments using the dictator game. Despite differences in respective roles, involvement in the game, degree of social distance or variation of stakes, the results are conclusive: subjects seldom predict that dictators will behave selfishly (by choosing the Nash equilibrium action, namely giving nothing). The majority of subjects expect that dictators will choose the equal split. This implies that generous behavior is not only observed in the lab, but also expected by subjects. In addition, expectations are accurate, matching closely the donations observed and showing that as a society we have a good grasp of how we interact. Finally, correlation between expectations and actual behavior suggests that expectations can be an important ingredient of generous or cooperative behavior.
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