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 …

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 …

and its impact on cooperation of its members are yet not well understood. We experimentally investigate community choice …

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, so that they increase overall welfare? We report an experiment in which players can issue non-binding threats to …

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 …