benefit- fostering unselfish cooperation and norm enforcement within the group-but also whether there is a dark side, in the … form of hostility between groups. Our experiment provides the first evidence free from the confounding effect of self … willingness to enforce a norm of cooperation towards fellow platoon members. This suggests that the social aspect of organizations …

interaction impacts cooperation within groups and surplus distribution. We developed and tested experimentally a Surplus … Allocation Game where cooperation of four agents is needed to produce surplus, but only two have the power to allocate it among … distributors and receivers. While behavior at the group level is diverse for surplus allocation and amount of cooperation …

Social identity has been shown to successfully enhance cooperation and effort in cooperation and coordination games …

In this paper we show experimentally that conditional cooperation, a phenomenon described in the private provision of … determines if they overcome a rival group. This environment allows us to identify new determinants of conditional cooperation. We … observe conditional cooperation in successful groups and in groups where members contribute more than rivals (even if they …

Using a repeated public goods game, we experimentally examine how apologies support mutual cooperation in groups. In … contribute more. In groups, adhering to apology norms is associated with greater cooperation, especially in the public treatment …

groups whose members know that they are composed only of 'like-minded' cooperators are able to maintain a higher cooperation … groups of 'like-minded' free riders do not cooperate. Yet, we find a high level of strategic cooperation that eventually … understand the dynamics of cooperation and free riding …

and stabilize cooperation. Then, the article discusses how, once cooperation is stable, cultural group selection is likely …