The main goal of this thesis is to investigate the reasons why firms do often adopt inefficient technologies even when superior ones are widely available, and to assess their consequences. From a macroeconomic perspective it has been emphasized that differences in the adoption and diffusion...

This paper considers a dynamic matching model with imperfectly observable worker effort. In equilibrium, the wage distribution is truncated from below by a no-shirking condition. This downward wage rigidity induces the same type of inefficient churning and "contractual fragility" as in Ramey and...

Inflation expectations have been of great interest to economists because they predict how agents in an economy set prices and react to changes in various macroeconomic variables. The existence of Keynesian liquidity traps in Japan and the United States have helped emphasize the importance of...