The Informativeness of Prices: Search With Learning and Cost Uncertainty
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 lead them to become better informed, and price competition will intensify. We 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. We show that the decisive factor in whether inflation variability increases or reduces the incentive to search, and thereby market efficiency, is the size of informational costs.
|Date of creation:||Sep 1991|
|Date of revision:|
|Publication status:||published as "Search with Learning from Prices: Does Increased Inflationary Uncertainty Lead to High Markups?", Review of Economic Studies, 60, (1993), p. 65-95|
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- Zvi Hercowitz, 1980.
"Money and the Dispersion of Relative Prices,"
NBER Working Papers
0431, National Bureau of Economic Research, Inc.
- Rosenfield, Donald B. & Shapiro, Roy D., 1981. "Optimal adaptive price search," Journal of Economic Theory, Elsevier, vol. 25(1), pages 1-20, August.
- 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.
- Benabou, Roland, 1988. "Search, Price Setting and Inflation," Review of Economic Studies, Wiley Blackwell, vol. 55(3), pages 353-76, July.
- Rothschild, Michael, 1974. "Searching for the Lowest Price When the Distribution of Prices Is Unknown," Journal of Political Economy, University of Chicago Press, vol. 82(4), pages 689-711, July/Aug..
- 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.
- Cukierman, Alex, 1983. "Relative price variability and inflation: A survey and further results," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 19(1), pages 103-157, January.
- Parks, Richard W, 1978. "Inflation and Relative Price Variability," Journal of Political Economy, University of Chicago Press, vol. 86(1), pages 79-95, February.
- Fudenberg, Drew & Tirole, Jean, 1991. "Perfect Bayesian equilibrium and sequential equilibrium," Journal of Economic Theory, Elsevier, vol. 53(2), pages 236-260, April.
- Barro, Robert J., 1976. "Rational expectations and the role of monetary policy," Journal of Monetary Economics, Elsevier, vol. 2(1), pages 1-32, January.
- Milgrom, Paul R & Weber, Robert J, 1982.
"A Theory of Auctions and Competitive Bidding,"
Econometric Society, vol. 50(5), pages 1089-1122, September.
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