This thesis is a collection of three essays on mechanism design. In Chapter 1, we consider a general Informed Principal Problem in the context of procurement. Both the potential suppliers and the buyer hold some private information: each supplier knows his cost of production, the buyer knows how...

This dissertation consists of three chapters exploring the role of incomplete information and learning in elections. The first chapter examines the dynamics of voter learning about candidate ability in repeated elections. The dynamic process of belief revision gives rise to incentives that vary...