We test whether a descriptive norm-nudge is a suitable policy tool to increase cooperation in a social dilemma when …-nudge increases cooperation by 14 and 16 percentage points for egalitarian and hierarchical 15 team decisions, respectively. Captains …

encourage cooperation may actually hurt morale, by convincing opportunistic team members to imitate and later take advantage of …

We study the effect of group size on cooperation in voluntary contribution mechanism games. As in previous experiments … find that cooperation is highest of all in twoperson groups. The findings in the high MPCR condition are consistent with … those from n-person prisoner's dilemma and oligopoly experiments that suggest it is more difficult to sustain cooperation in …

voluntary cooperation in team production. Our experimental data suggest an indirect and gender-specific link: Overconfident men …