Implementation and experimental approaches to efficiency and market equilibrium.

다국어 초록 (Multilingual Abstract)

A challenging question in Economics is how to solve the tension between individual incentives and efficiency. This dissertation address that question for three problems. The first two chapters use an implementation approach to market equilibrium. The goal of chapter 1 is to try to understand the game theoretic connections between market equilibrium paradigms under complete and incomplete information, using a game form that belongs to the class of elementary mechanisms. In the second chapter, we partially solves a boundary problem prominent in the implementation literature of Walrasian Equilibrium, using a sequential mechanism. Finally, chapter 3 uses an experimental approach to efficiency. We study various communications and punishments devices in voluntary contribution to public goods mechanisms as a mean to enhance cooperation within groups. We identify which device is the most effective.