We consider a simple model of market structure determination with discrete product differentiation and strategic interaction between firms. Our equilibrium concept is based on a set of relatively weak conditions that describe the profits of active and potential firms in a market. In our model,...

We provide a framework for inference in discrete games that involve multiple decision makers and use it to study airline market structure in the US. We make inferences on a ``class of models'' rather that looking for point identifying assumptions that pin down a unique model. We extend the...

When a large number of agents play a game with strategic complementarity, information choices exhibit strategic complementarity as well: If an agent wants to do what others do, then they want to know what others know. Likewise, strategic substitutability in actions produces strategic...

Labour markets in different regions or countries vary significantly with respect to turnover rates, remuneration practices, investment in general and firm-specific human capital, and the frequency of employee-driven start-ups. Examples include the Silicon Valley versus Route 128 in the US, and...

We consider a generic environment with (potentially) multiple equilibria and analyze conditions for identification of the structural parameters. We then study conditions that allow for the estimation of both the structural parameters and the “selected equilibriumâ€. We focus on a...

We augment a standard global coordination game along the lines of Morris and Shin (1998) by an asset market where prices are determined in a noisy Rational Expectations Equilibrium. We study the implications of information aggregation through prices for equilibrium selection arguments in global...

In a frictional labor market, when an employee receives an outside offer, his employer is naturally tempted to compete to retain him. Casual observation in the labor market, however, suggests that this type of ex post competition is rare. As a consequence, employers often let valuable employees...

Several recent papers (Shimer 2003a, 2003b; Costain and Reiter 2003; Hall 2003) have shown that general equilibrium labor market models have a hard time generating the degree of cyclical volatility in unemployment and vacancies that is observed in the data. These papers have suggested that rigid wages...