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 …

' contributions to a public good. The donation is either costless (because it is financed by the experimenter) or deducted from a team …

temporary group member's effort but also the efforts of the permanent group members and, ultimately, also cooperation within the …