Sorting and Decentralized Price Competition
Abstract
We investigate the role of search frictions in markets with price competition and how it leads to sorting of heterogeneous agents. There are two aspects of value creation: the match value when two agents actually trade and the probability of trading governed by the search technology. We show that positive assortative matching obtains when complementarities in the former outweigh complementarities in the latter. This happens if and only if the match-value function is root-supermodular, that is, its nth root is supermodular, where n reflects the elasticity of substitution of the search technology. This condition is weaker than the condition required for positive assortative matching in markets with random search. Copyright 2010 The Econometric Society.Download Info
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Article provided by Econometric Society in its journal Econometrica.
Volume (Year): 78 (2010)
Issue (Month): 2 (03)
Pages: 539-574
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Keywords:Other versions of this item:
- Jan Eeckhout & Philipp Kircher, 2008. "Sorting and Decentralized Price Competition," PIER Working Paper Archive 08-020, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania.
- Eeckhout, Jan & Kircher, Philipp, 2010. "Sorting and decentralized price competition," Open Access publications from London School of Economics and Political Science http://eprints.lse.ac.uk/, London School of Economics and Political Science.
- J64 - Labor and Demographic Economics - - Mobility, Unemployment, and Vacancies - - - Unemployment: Models, Duration, Incidence, and Job Search
- C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
- D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information
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