monitors'). We review the literature on the relative merits of punishment and rewards when the distribution of incentive power … evidence showing how concentrating reward/punishment power in one group member affects cooperation. …

: that altruistic punishment can sustain cooperation. This paper extends their model in order to explain such recent findings …. It focuses on fear of punishment, not punishment itself, as the key mechanism to sustain contributions to the public good … differs, on average, in less than 5% compared to relevant experiments with punishment in the lab. …

is predicted to emerge in their "action commitment" extended game. We then report a laboratory experiment designed to … ; Sequential Contributions ; Endogenous Timing ; Action Commitment ; Observable Delay ; Experiment …

report a laboratory experiment based on these extended games. We find that behavior is similar in the two extended games … Contributions ; Endogenous Timing ; Action Commitment ; Observable Delay ; Experiment …

; and, as a behavioural indicator of disapproval, punishment. Our findings are that, for a given pattern of contributions …, neither punishment nor emotion depends on the Give versus Take framing that we manipulate. To this extent, they suggest that … the social preferences we observe are robust to framing effects. -- framing effects ; punishment ; emotions ; public goods …

heterogeneity with respect to two dimensions: capability and valuation. Our results reveal that with and without punishment …

preference in one experiment and make a point prediction about the contribution to a repeated public good. This allows for a … predicted contributions, because they contribute in the first half of the experiment. We also show that the interaction of …