We run a public good experiment in the field and in the lab with (partly) the same subjects. The field experiment is a true natural field experiment as subjects do not know that they are exposed to an experimental variation. We can show that subjects' behavior in the classic lab public good...

Decisions on joint funding of continuous public goods between two agents often involve heterogeneous targets. We introduce loss functions in a contribution game in order to study the effect of this conflict. Unlike Varian (1994), joint contribution occurs only if the players’ targets are...

In this paper we examine voluntary contributions to a public good, embedding Varian (1994)’s voluntary contribution game in extended games that allow players to choose the timing of their contributions. We show that predicted outcomes are sensitive to the structure of the extended game, and...

This paper considers a model of voluntary public good provision with two players and convex costs. I demonstrate that the provision of public good is higher in the sequential framework under fairly general conditions. This outcome shows that introducing convex costs may reverse under some...

This paper investigates mechanisms for the private provision of a public good which utilize competition to incentivize contributions. Theory predicts that “all-pay” competition is particularly effective for fundraising. Within this class of mechanisms different types of lotteries and all-pay...

In this paper we examine voluntary contributions to a public good when the timing of contributions is endogenously determined by contributors, focusing on the simple quasi-linear setting with two players (Varian, 1994). We show that the move order that is predicted to emerge is sensitive to how...

This paper investigates fundraising mechanisms for the private provision of a public good which utilize competition as an incentive device for contributions. Theory predicts that “all-pay” competition is particularly effective for fundraising. Within this class of mechanisms different types...

In this paper we examine voluntary contributions to a public good, embedding Varian (1994)’s voluntary contribution game in extended games that allow players to choose the timing of their contributions. We show that predicted outcomes are sensitive to the structure of the extended game, and...

We run a public good experiment with four different treatments. The payoff function is chosen such that the Nash equilibrium (NE) and the collective optimum (CO) are both in the interior of the strategy space. We try to test the effect of varying the level of the collective optimum, which...

This paper investigates mechanisms for the private provision of a public good which utilize competition to incentivize contributions. Theory predicts that “all-pay” competition is particularly effective for fundraising. Within this class of mechanisms different types of lotteries and all-pay...