Which inequalities among individuals are considered unjust? This paper reportsthe results of an experiment designed to …

We investigate experimentally whether entry costs have an impact on the evolutionof cooperation in a social dilemma …

and the asymmetry of information. Wedetermine the conditions which allow that mutual cooperation constitutesthe …

Unlike previous attempts to implement cooperation in a prisoners’ dilemma gamewith an infinite horizon in the …, according toour results, only a strict additional equilibrium increases cooperation rate for a giventime horizon. As expected a … longer time horizon promotes cooperation. …

.We find that the observed behavior is primarily determined by an imperfectconditional cooperation that prioritizes local level …

. Moreover, notwithstanding adecline in contributions, conditional cooperation is found to be stable over time. …

establish cooperation with non-kin. We shedlight on the issue by a voluntary social exchange experiment where related(via mutual …Social institutions regulating group conduct have been regarded as necessaryfor human cooperation to transcend family … timehorizon, we provide evidence that repeated interactions play a crucial rolein human cooperation, although humans remain …