Laboratory experiments on the provision of public goods follow subjects over time as they interact in a small group. In every period subjects allocate a fixed endowment between a private good and a group good that yields a return to all group members. These experiments produce data sets that are...

We study a public goods game with heterogeneous agents who care about their own payoff as well as of the player who receives the lowest payoff. The weight on own payoff varies across players, and is private information. We first develop a theoretical model and then test the predictions of our...