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 …

We test if cooperation is promoted by rank-order competition between groups in which all groups can be ranked first, i … are absent if groups perform at the same level and it therefore does not eliminate low-cooperation equilibria. We find … that all-can-win competition produces a universal increase in cooperation and benefits a majority of individuals if …

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

cooperation within groups, it also has a detrimental impact on group earnings in the short run. Could the introduction of pre …-play threats to punish have enough of a beneficial impact on cooperation, while not incurring the cost associated with actual … punishment leads to lower threats, cooperation and welfare, restoring them to levels equal to or below the levels attained in the …