We study cooperation within and between groups in the laboratory, comparing treatments in which two groups have … conflict. We model conflict using an inter-group Tullock contest, and measure its effects upon cooperation using a multi …-level public good game. We demonstrate that conflict increases cooperation within groups, while decreasing cooperation between …

initial cooperation rates are similar, it increases in the groups with higher intelligence to reach almost full cooperation … differences in the response to past cooperation of the partner. In higher intelligence subjects, cooperation after the initial … difference is absent. Cooperation of higher intelligence subjects is payoff sensitive, thus not automatic: in a treatment with …

BoS, with high and low payoff inequality. In PD, disclosure markedly hampers cooperation, as higher intelligence players … with low payoff inequality, disclosure disrupts coordination, as higher intelligence players try to force their most … does not significantly affect coordination, while coordination is more often on outcomes that favor the less intelligent …

Case studies of cartels and recent theory suggest that repeated communication is key for stable cooperation in … understood. We study cooperation under different monitoring and communication structures in the laboratory. Under all monitoring … monitoring, where actions can only be observed with noise, cooperation is stable only when subjects can communicate before every …

cooperation? This paper investigates the possibility that a small deceptive act of misrepresenting some information about one … cooperation level by approximately 12-13 percentage points. Not only that the average catfisher was substantially more likely to …-term opportunities to misrepresent one's identity to others can potentially be extremely harmful to later human cooperation and the …

equilibrium strategy. Exclusion has a positive impact on cooperation when it is followed by a quick rather than a slow … retaliation. Post-exclusion cooperation and forgiveness depend not only on the length of exclusion but also on the perceived …

Development of human societies requires cooperation among unrelated individuals and obedience to social norms. Although … punishment is widely agreed to be potentially useful in fostering cooperation, many recent results in psychology and economics … eliminate its detrimental effects on cooperation. In a public goods game designed to create tension between group and individual …

concept of cooperation and explore the extent to which this intervention brings about changes in people’s voluntary … contributions to the public good and self-reported emotional responses. Our findings suggest that priming cooperation increases …