This study characterizes the corporate leniency policy that minimizes the frequency with which collusion occurs. Though it can be optimal to provide only partial leniency, plausible sufficient conditions are provided whereby the antitrust authority should waive all penalties for the first firm...

This paper proposes a nonparametric method of estimating marginal treatment effects in heterogeneous populations. Building upon an insight of Heckman and Vytlacil, the conventional treatment effects model with heterogeneous effects is shown to imply that outcomes are a nonlinear function of...

We analyze the impact of unemployment benefits and minimum wages using an equilibrium search model which allows for dispersion of benefits and productivity levels job-to-job transitions and structural and frictional unemployment The estimation method uses readily available aggregate data on...

This paper distills and organizes facts about cartels from about 20 European Commission decisions over 1999-2004. It describes the properties of a collusive outcome, monitoring and punishment methods for enforcing it, the frequency of meetings, the organizational structure of cartels, and what...

We develop econometric models of ascending (English) auctions which allow for both bidder asymmetries as well as common and/or private value components in bidders' underlying valuations We show that the equilibrium inverse bid functions in each round of the auction are implicitly defined...

This paper presents a new estimator for the mixed proportional hazard model that allows for a nonparametric baseline hazard and time-varying regressors. In particular, this paper allows for discrete measurement of the durations as happens often in practice. The integrated baseline hazard and all...

Recent research has shown that 'rich' households save at much higher rates than others (see Carroll (2000); Dynan Skinner and Zeldes (1996); Gentry and Hubbard (1998); Huggett (1996); Quadrini (1999)) This paper documents another large difference between the rich and the rest of the population:...

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