What are the effects of beliefs, sentiment, and uncertainty, over the business cycle? To answer this question, we develop a behavioral New Keynesian macroeconomic model, in which we relax the assumption of rational expectations. Agents are, instead, boundedly rational: they have a...

This chapter studies how incomplete information helps accommodate frictions in coordination, leading to novel insights on the joint determination of expectations and macroeconomic outcomes. We review and synthesize recent work on global games, beauty contests, and their applications. We...

Economists, observers and policy-makers often emphasize the role of sentiment as a potential driver of the business cycle. In this paper we provide three contributions to this debate. First, we critically survey the existing literature on sentiment (considering both confidence and uncertainty)...