We study Bayesian mechanism design in situations where agents' information may be multi-dimensional, concentrating on mechanisms that lead to efficient allocations. Our main result is that a generalization of the well-known Vickrey-Clarke-Groves mechanism maximizes the planner's "revenue'' among...

Motivated by recent auctions of licenses for the radio frequency spec trum, we consider situations where multiple objects are auctioned simultaneousl y by means of a second-price, sealed-bid auction. For some buyers, called globa l bidders, the value of multiple objects exceeds the sum of the...

We study a model in which two perfectly informed experts offer advice to a decision maker whose actions affect the welfare of all. Experts are biased and thus may wish to pull the decision maker in different directions and to different degrees. When the decision maker consults only a single...

Organizational theory suggests that authority should lie in the hands of those with information, yet the power to transfer authority is rarely absolute in practice. We investigate the validity and application of this advice in a model of optimal contracting between an uninformed principal and...

Chapter 1: Nonparametric Identification of Insurance Models with Multidimensional Screening (with Isabelle Perrigne and Quang Vuong)This chapter studies the identification of an insurance model with multidimensional screening, where insurees are characterized by risk and risk aversion. The model...

This thesis consists of two essays. In the first essay, we analyze a two-stage game, with coalition formation in the first stage and Cournot oligopoly in the second, to show how coalition formation takes place and affects the environmental level.In open membership games with symmetric players,...

CHAPTER 1: Informational Control and Organizational DesignThis essay focuses on organizational issues of allocating authority between an uninformed principal and an informed expert. We show that the established result of Dessein (2002) that delegating decisions to a perfectly informed expert is...