I study an allocation mechanism of a single item in the presence of type-dependent externalities between bidders. The type-dependency introduces countervailing incentives and the allocation sometimes requires that types in an interior subset obtain their reservation utility. Furthermore,...

I analyze optimal auction design in the presence of linear type-dependent negative externalities. I characterize the properties of the optimal mechanism when externalities are “strongly decreasing” and “increasing” in the agent’s valuation and I discuss its implementation with...

We study in the laboratory a series of first price sealed bid auctions of a common value good. Bidders face three types of information: private information, public information and common uncertainty. Auctions are characterized by the relative sizeof these three information elements. According to...