Güth, Werner; Levati, Vittoria; Wangenheim, Georg von - Max-Planck-Institut für Ökonomik, Max-Planck-Gesellschaft - 2004
Social institutions regulating group conduct have been regarded as necessary for human cooperation to transcend family bonds. However, many studies in economics and biology indicate that reciprocity based on repeated interaction su_ces to establish cooperation with non-kin. We shed light on the...