Medicare has recently experienced the largest expansion of benefits since its inception: the inclusion of prescription drug coverage tinder the Medicare Prescription Drug, Improvement and Modernization Act of 2003. The policy debate has mainly focused on estimating the cost of implementing the...

This Paper studies the identification problem in infinite horizon Markovian games and proposes a generally applicable estimation method. Every period firms simultaneously select an action from a finite set. We characterize the set of Markov equilibria. Period profits are a linear function of...

This paper studies the identification problem in infinite horizon Markovian games and proposes a generally applicable estimation method. Every period firms simultaneously select an action from a finite set. We characterize the set of Markov equilibria. Period profits are a linear function of...

We seek to estimate the causes and magnitudes of network externalitiesfor the automated clearinghouse (ACH) electronic payments system, usinga panel data set on individual bank usage of ACH. We construct anequilibrium model of consumer and bank adoption of ACH in the presenceof a network. The...

We estimate a structural model of the market for automatic tellermachines (ATMs) in order to evaluate the implications of regulating ATMsurcharges on ATM entry and consumer and producer surplus. We estimatethe model using data on firm and consumer locations, and identify theparameters of the...