IDEAS home Printed from https://ideas.repec.org/p/sef/csefwp/55.html
   My bibliography  Save this paper

Competitive Prices in Markets with Search and Information Frictions

Author

Abstract

This paper introduces directed search into the sequential search model of Diamond (1971) by allowing buyers to observe the distribution of prices charged by two (or more) distinct subgroups of firms in the market. This enables buyers to direct their searches towards the most desirable group of firms. Search within groups remains random since price information about each of the groups is imperfect, as in a standard setup. I find that competitive pricing is then the unique equilibrium outcome. This holds even when different buyers observe very different groups of firms and face different and strictly positive levels of search costs. Considering an explicit learning scheme the paper shows that convergence of prices to competitive equilibrium depends crucially on the level of search costs and the number of groups observed by buyers. Lower search costs and a higher number of observed groups generate a higher price elasticity of demand and thereby favor the emergence of competitive prices.

Suggested Citation

  • Klaus Adam, 2001. "Competitive Prices in Markets with Search and Information Frictions," CSEF Working Papers 55, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
    • Handle: RePEc:sef:csefwp:55
    as

    Download full text from publisher

    File URL: http://www.csef.it/WP/wp55.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Stigler, George J., 2011. "Economics of Information," Ekonomicheskaya Politika / Economic Policy, Russian Presidential Academy of National Economy and Public Administration, vol. 5, pages 35-49.
    2. John W. Pratt & David A. Wise & Richard Zeckhauser, 1979. "Price Differences in almost Competitive Markets," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 93(2), pages 189-211.
    3. Martin Sefton & Abdullah Yavas & Eric Abrams, 2000. "An experimental comparison of two search models," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 16(3), pages 735-749.
    4. Ed Hopkins & Robert M. Seymour, 2002. "The Stability of Price Dispersion under Seller and Consumer Learning," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 43(4), pages 1157-1190, November.
    5. Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-969, July.
    6. Weitzman, Martin L, 1979. "Optimal Search for the Best Alternative," Econometrica, Econometric Society, vol. 47(3), pages 641-654, May.
    7. Rafael Rob, 1985. "Equilibrium Price Distributions," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 52(3), pages 487-504.
    8. Diamond, Peter A., 1971. "A model of price adjustment," Journal of Economic Theory, Elsevier, vol. 3(2), pages 156-168, June.
    9. Butters, Gerard R., 1977. "Market allocation through search: Equilibrium adjustment and price dispersion: Comment," Journal of Economic Theory, Elsevier, vol. 15(1), pages 225-227, June.
    10. David, Douglas D & Holt, Charles A, 1996. "Consumer Search Costs and Market Performance," Economic Inquiry, Western Economic Association International, vol. 34(1), pages 133-151, January.
    11. Adam, Klaus, 2001. "Learning While Searching for the Best Alternative," Journal of Economic Theory, Elsevier, vol. 101(1), pages 252-280, November.
    12. Michael R. Baye & John Morgan, 2001. "Information Gatekeepers on the Internet and the Competitiveness of Homogeneous Product Markets," American Economic Review, American Economic Association, vol. 91(3), pages 454-474, June.
    13. Stiglitz, Joseph E, 1987. "Competition and the Number of Firms in a Market: Are Duopolies More Competitive than Atomistic Markets?," Journal of Political Economy, University of Chicago Press, vol. 95(5), pages 1041-1061, October.
    14. Bradley J. Ruffle, 2000. "Some factors affecting demand withholding in posted-offer markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 16(3), pages 529-544.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Cason, Timothy N. & Friedman, Daniel, 2003. "Buyer search and price dispersion: a laboratory study," Journal of Economic Theory, Elsevier, vol. 112(2), pages 232-260, October.
    2. ANDERSON, Simon & de PALMA, André, 2003. "Price dispersion," LIDAM Discussion Papers CORE 2003032, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    3. José Tudón, 2021. "Can price dispersion be supported solely by information frictions?," Economic Theory Bulletin, Springer;Society for the Advancement of Economic Theory (SAET), vol. 9(1), pages 75-90, April.
    4. Michael R. Baye & John Morgan, 2004. "Price Dispersion in the Lab and on the Internet: Theory and Evidence," RAND Journal of Economics, The RAND Corporation, vol. 35(3), pages 448-466, Autumn.
    5. Cason, Timothy N. & Datta, Shakun, 2006. "An experimental study of price dispersion in an optimal search model with advertising," International Journal of Industrial Organization, Elsevier, vol. 24(3), pages 639-665, May.
    6. Dutta, Champa Bati & Das, Debasish Kumar, 2017. "What drives consumers' online information search behavior? Evidence from England," Journal of Retailing and Consumer Services, Elsevier, vol. 35(C), pages 36-45.
    7. Fishman, Arthur & Simhon, Avi, 2003. "Can Income Equality Increase Competitiveness?," Discussion Papers 14983, Hebrew University of Jerusalem, Department of Agricultural Economics and Management.
    8. Burdett, Ken & Smith, Eric, 2010. "Price distributions and competition," Economics Letters, Elsevier, vol. 106(3), pages 180-183, March.
    9. Greg Kaplan & Guido Menzio & Leena Rudanko & Nicholas Trachter, 2019. "Relative Price Dispersion: Evidence and Theory," American Economic Journal: Microeconomics, American Economic Association, vol. 11(3), pages 68-124, August.
    10. Ralph-C Bayer & Changxia Ke, 2010. "Rockets and Feathers in the Laboratory," School of Economics and Public Policy Working Papers 2010-20, University of Adelaide, School of Economics and Public Policy.
    11. Bruce I. Carlin & Florian Ederer, 2019. "Search Fatigue," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 54(3), pages 485-508, May.
    12. Rauh, Michael T., 2009. "Strategic complementarities and search market equilibrium," Games and Economic Behavior, Elsevier, vol. 66(2), pages 959-978, July.
    13. repec:smu:ecowpa:1301 is not listed on IDEAS
    14. Maarten C.W. Janssen & Jose Luis Moraga-Gonzalez & Matthijs R. Wildenbeest, 2004. "Consumer Search and Oligopolistic Pricing: An Empirical Investigation," Tinbergen Institute Discussion Papers 04-071/1, Tinbergen Institute.
    15. Jeffrey R. Brown & Austan Goolsbee, 2002. "Does the Internet Make Markets More Competitive? Evidence from the Life Insurance Industry," Journal of Political Economy, University of Chicago Press, vol. 110(3), pages 481-507, June.
    16. Timothy N. Cason & Shakun D. Mago, 2010. "Costly Buyer Search In Laboratory Markets With Seller Advertising," Journal of Industrial Economics, Wiley Blackwell, vol. 58(2), pages 424-449, June.
    17. Álvarez, Francisco & Rey, José-Manuel, 2019. "(Quasi) uniqueness and restoring dynamics of price-dispersion market equilibria under search cost," Journal of Mathematical Economics, Elsevier, vol. 81(C), pages 1-13.
    18. Zhuang, Hejun & Popkowski Leszczyc, Peter T.L. & Lin, Yuanfang, 2018. "Why is Price Dispersion Higher Online than Offline? The Impact of Retailer Type and Shopping Risk on Price Dispersion," Journal of Retailing, Elsevier, vol. 94(2), pages 136-153.
    19. Stahl, Dale O., 1996. "Oligopolistic pricing with heterogeneous consumer search," International Journal of Industrial Organization, Elsevier, vol. 14(2), pages 243-268.
    20. Menzio, Guido & Trachter, Nicholas, 2015. "Equilibrium price dispersion with sequential search," Journal of Economic Theory, Elsevier, vol. 160(C), pages 188-215.
    21. George Alessandria, 2005. "Consumer search, price dispersion, and international relative price volatility," Working Papers 05-9, Federal Reserve Bank of Philadelphia.

    More about this item

    Keywords

    Diamond paradox; competitive pricing; random and directed sequential search; equilibrium search model; learning;
    All these keywords.

    JEL classification:

    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:sef:csefwp:55. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Dr. Maria Carannante (email available below). General contact details of provider: https://edirc.repec.org/data/cssalit.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.