observe surprisingly high levels of cooperation and altruism within groups in conflict situations such as civil wars. We …-link structure. We test the implications of our model in a laboratory experiment. -- cooperation ; conflict, defence ; signaling …

study the impact of different time horizons on cooperation in (quasi) continuous time prisoner's dilemmas. We find that … cooperation levels are similar or higher when the horizon is deterministic rather than stochastic. Moreover, a deterministic … deterministic horizon subjects show high initial cooperation and a strong end-of-period reversal to defection. Moreover, they do not …

and/or communication support altruistic cooperation to sustain the welfare of future generations. Without punishment or … punishment with communication strongly increases cooperation, showing that an effective decentralized solution to a Game of …We characterize 'Games of Altruistic Cooperation' as a class of games in which cooperation leaves the individual and …

cost-benefit ratio (CBR). There are indeed only two stable sets of equilibria enabling cooperation, one for low CBRs …-order discriminators which highlights the necessity for higher-order information to sustain cooperation through indirect reciprocity. In a …

cost-benefit ratio (CBR). There are indeed only two stable sets of equilibria enabling cooperation, one for low CBRs …-order discriminators which highlights the necessity for higher-order information to sustain cooperation through indirect reciprocity. In a …

anger, ‘social’ emotions like shame and guilt need to be present for punishment to be an effective deterrent of …

evolution of cooperation. Compared to peer sanctioning, institutional sanctioning may be sensitive to players' attitude toward …This article aims to clarify the case and the mechanism where sanction or punishment by institution can deliver the … players who do not pre-commit punishment. Departed from former studies based on the punisher who always acts cooperatively, we …

cooperative behavior include assortative matching in groups, group longevity, and punishment-based group norms. …