This paper provides a new way to identify conditional cooperation in a real-time version of the standard voluntary … further contribution, and use a permutation test on contribution cycles to assign a measure of conditional cooperation to each … group play. The validity of the measures is tested in an experiment. We find that roughly 20% of the plays exhibit dynamics …

find a large and positive effect of endogenous institutional choice on the level of cooperation in comparison to … exogenously implemented institutions. This suggests that participation rights enhance cooperation in groups. With endogenous … levels of cooperation. Our results are evaluated against the predictions of social preference models. -- public goods …