This paper presents a simple twofold mechanism that attains a complete implementation of the efficient allocation of pollution. The first component is adopted from Duggan and Roberts [Duggan, J., Roberts, J., 2002. Implementing the efficient allocation of pollution. American Economic Review 92,...

This paper focuses on collective contests for commons and club goods. Our main objective is to examine in this context the effect of group size on its performance. The main results specify conditions for the existence (non-existence) of the group-size paradox, namely, the situation where a...