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Search with Learning from Prices: Does Increased Inflationary Uncertainty Lead to Higher Markups?

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  • Benabou, Roland
  • Gertner, Robert

Abstract

Aggregate cost uncertainty, arising from real shocks or unanticipated inflation, reduces the informativeness of prices by scrambling relative and aggregate variations. But when agents can acquire additional information, such increased noise may in fact lea d them to become better informed and price competition will intensify. The authors examine these issues in a model of search with learning where consumers search optimally from an unknown price distribution while firms price optimally given consumers' search rules. They show that the decisive factor in whether inflation variability increases or reduces the incentive to search, and thereby market efficiency, is t he size of informational costs. Copyright 1993 by The Review of Economic Studies Limited.

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Bibliographic Info

Article provided by Wiley Blackwell in its journal Review of Economic Studies.

Volume (Year): 60 (1993)
Issue (Month): 1 (January)
Pages: 69-94

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Handle: RePEc:bla:restud:v:60:y:1993:i:1:p:69-94

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References

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  1. Zvi Hercowitz, 1980. "Money and the Dispersion of Relative Prices," NBER Working Papers 0431, National Bureau of Economic Research, Inc.
  2. Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
  3. Stanley Fischer, 1981. "Relative Shocks, Relative Price Variability, and Inflation," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 12(2), pages 381-442.
  4. Barro, Robert J., 1976. "Rational expectations and the role of monetary policy," Journal of Monetary Economics, Elsevier, vol. 2(1), pages 1-32, January.
  5. Cukierman, Alex, 1978. "The Relationship Between Relative Prices and the General Price Level: A Suggested Interpretation," Working Papers 78-11, C.V. Starr Center for Applied Economics, New York University.
  6. Milgrom, Paul R & Weber, Robert J, 1982. "A Theory of Auctions and Competitive Bidding," Econometrica, Econometric Society, vol. 50(5), pages 1089-1122, September.
  7. Fudenberg, Drew & Tirole, Jean, 1991. "Perfect Bayesian equilibrium and sequential equilibrium," Journal of Economic Theory, Elsevier, vol. 53(2), pages 236-260, April.
  8. Lucas, Robert E, Jr, 1973. "Some International Evidence on Output-Inflation Tradeoffs," American Economic Review, American Economic Association, vol. 63(3), pages 326-34, June.
  9. Parks, Richard W, 1978. "Inflation and Relative Price Variability," Journal of Political Economy, University of Chicago Press, vol. 86(1), pages 79-95, February.
  10. Rosenfield, Donald B. & Shapiro, Roy D., 1981. "Optimal adaptive price search," Journal of Economic Theory, Elsevier, vol. 25(1), pages 1-20, August.
  11. Vining, Daniel R, Jr & Elwertowski, Thomas C, 1976. "The Relationship between Relative Prices and the General Price Level," American Economic Review, American Economic Association, vol. 66(4), pages 699-708, September.
  12. Pagan, A R & Hall, A D & Trivedi, P K, 1983. "Assessing the Variability of Inflation," Review of Economic Studies, Wiley Blackwell, vol. 50(4), pages 585-96, October.
  13. Benabou, Roland, 1992. "Inflation and Efficiency in Search Markets," Review of Economic Studies, Wiley Blackwell, vol. 59(2), pages 299-329, April.
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