Where are you from? Cultural Differences in Public Good Experiments.

We study the effect of cultural differences on contributions in a public good experiment, analysing real-time interactions between Italian and British subjects in their home countries. In the first treatment, subjects play in nationally-homogeneous groups. In the second treatment, Italian and British subjects play in heterogeneous groups, knowing the nationality of the group members. In the third treatment, we control for a possible “country effect” by giving players no information on nationality. The data suggest that, in homogeneous groups, British subjects contribute significantly more to the public good; contributions are lower in heterogeneous groups; there is no country effect.