Are prices or quantities the best regulatory instrument to align private actions with public interests in the presence of externalities? We add another dimension to this ongoing debate by experimentally analyzing the interaction between instrument choice and intrinsic motivation of regulated...

In a repeated public goods setting, we explore whether individuals, acting unilaterally, will provide an effective sanctioning institution. Subjects first choose unilaterally whether they will participate in a sanctioning stage that follows a contribution stage. Only those who gave themselves...

We devise a new experimental game by nesting a voluntary contributions mechanism in a broader spectrum of incentive schemes. With it, we study tensions between egalitarianism, equity concerns, self-interest, and the need for incentives. In a 2x2 design, subjects either vote on or exogenously...

Teams often suffer from a free rider problem with respect to individual contributions. That putting teams into competition with each other can mitigate this problem is an important recent insight. However, we know little about how inequality in endowment between teams might influence this...

At least since Adam Smith, economists have recognized the beneficial effects of competition in markets. The possible positive influence of competition between teams on the free rider problem within teams is a more recent discovery. It is important because the free rider problem exists to some...

We conduct a field experiment involving real purchasing decisions in a large supermarket chain to test the effect of different regulatory interventions aiming to induce a more climateâ€friendly diet on intrinsic motivation. Focusing on shoppers who prefer the dirty variety, we compare...

We analyze a group contest in which n groups compete to win a group-specific public good prize. Group sizes can be different and any individual player may value the prize differently within and across groups. Players expend costly efforts simultaneously and independently. Only the highest effort...

We investigate situations in which players make costly contributions as group mem- bers in a group conflict, and at the same time engage in contest with fellow group members to appropriate the possible reward. We introduce within group power asymmetry and complementarity in members' efforts and...

Private provision of public goods can only supplement government provision if individual actions affect the level of the public good. Cap-and-trade schemes reduce the overuse of common resources such as a stable climate or fish stocks by imposing a binding cap on total use by regulated agents....

Plott and Zeiler (2005) report that the willingness-to-pay/willingness-to-accept disparity is absent for mugs in a particular experimental setting, designed to neutralize misconceptions about the procedures used to elicit valuations. This result has received sustained attention in the...