Adverse Selection in Competitive Search Equilibrium
AbstractWe extend the concept of competitive search equilibrium to environments with private information, and in particular adverse selection. Principals (e.g. employers or agents who want to buy assets) post contracts, which we model as revelation mechanisms. Agents (e.g. workers, or asset holders) have private information about the potential gains from trade. Agents observe the posted contracts and decide where to apply, trading off the contracts' terms of trade against the probability of matching, which depends in general on the principals' capacity constraints and market search frictions. We characterize equilibrium as the solution to a constrained optimization problem, and prove that principals offer separating contracts to attract different types of agents. We then present a series of applications, including models of signaling, insurance, and lemons. These illustrate the usefulness and generality of the approach, and serve to contrast our findings with standard results in both the contract and search literatures.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 14915.
Date of creation: Apr 2009
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Other versions of this item:
- Veronica Guerrieri & Robert Shimer & Randall Wright, 2010. "Adverse Selection in Competitive Search Equilibrium," Econometrica, Econometric Society, vol. 78(6), pages 1823-1862, November.
- Robert Shimer & Randall Wright & Veronica Guerrieri, 2009. "Adverse Selection in Competitive Search Equilibrium," 2009 Meeting Papers 139, Society for Economic Dynamics.
- D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
- E24 - Macroeconomics and Monetary Economics - - Macroeconomics: Consumption, Saving, Production, Employment, and Investment - - - Employment; Unemployment; Wages; Intergenerational Income Distribution
- J6 - Labor and Demographic Economics - - Mobility, Unemployment, and Vacancies
This paper has been announced in the following NEP Reports:
- NEP-ALL-2009-04-25 (All new papers)
- NEP-CTA-2009-04-25 (Contract Theory & Applications)
- NEP-DGE-2009-04-25 (Dynamic General Equilibrium)
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