IDEAS home Printed from https://ideas.repec.org/p/net/wpaper/0512.html
   My bibliography  Save this paper

Competing Against Simulated Equilibrium Price Dispersions: An Experiment On Internet-Assisted Search Markets

Author

Listed:
  • Aurora García-Gallego

    () (Universitat Jaume I)

  • Nikolaos Georgantzís

    () (Universitat Jaume I)

  • Pedro Pereira

    () (Autoridade da Concorrência)

  • José C. Pernías-Cerrillo

    () (LINEEX, Universitat de Valencia)

Abstract

In a four-treatment experiment, we test some of the hypotheses in García-Gallego et al. (2004) concerning competition among a number of firms of which some (or all) are indexed by a price-comparison engine facilitating buyers’ search process. In this paper, we isolate individual behavior from noise due to other players’ actions and learning, facing each subject with simulated rivals whose prices are extracted from mixed strategy equilibrium distributions. We find systematic deviations from both theoretical distributions and previous data obtained in sessions where all players were human. Specifically, departures of experimental data from the corresponding theoretical predictions are enhanced in this setting as compared to our previous research in which all agents were represented by human players. This suggests that the divergence between theoretical and observed price reported there should not be attributed to noisy learning and strategic uncertainty due to subjects’ interaction with other players. Furthermore, economic tests on players’ risk attitudes organize pricing behavior in meaningful, although not always compatible, ways.

Suggested Citation

  • Aurora García-Gallego & Nikolaos Georgantzís & Pedro Pereira & José C. Pernías-Cerrillo, 2005. "Competing Against Simulated Equilibrium Price Dispersions: An Experiment On Internet-Assisted Search Markets," Working Papers 05-12, NET Institute.
  • Handle: RePEc:net:wpaper:0512
    as

    Download full text from publisher

    File URL: http://www.netinst.org/Georgantzis.pdf
    Download Restriction: no

    References listed on IDEAS

    as
    1. Baye, Michael R. & Kovenock, Dan & de Vries, Casper G., 1992. "It takes two to tango: Equilibria in a model of sales," Games and Economic Behavior, Elsevier, vol. 4(4), pages 493-510, October.
    2. 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.
    3. Guimaraes, Paulo, 1996. "Search Intensity in Oligopoly," Journal of Industrial Economics, Wiley Blackwell, vol. 44(4), pages 415-426, December.
    4. Varian, Hal R, 1980. "A Model of Sales," American Economic Review, American Economic Association, vol. 70(4), pages 651-659, September.
    5. Diamond, Peter A., 1971. "A model of price adjustment," Journal of Economic Theory, Elsevier, vol. 3(2), pages 156-168, June.
    6. Rosenthal, Robert W, 1980. "A Model in Which an Increase in the Number of Sellers Leads to a Higher Price," Econometrica, Econometric Society, vol. 48(6), pages 1575-1579, September.
    7. 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.
    8. Samuelson, Larry & Zhang, Jianbo, 1992. "Search costs and prices," Economics Letters, Elsevier, vol. 38(1), pages 55-60, January.
    9. Pereira, Pedro, 2005. "Do lower search costs reduce prices and price dispersion?," Information Economics and Policy, Elsevier, vol. 17(1), pages 61-72, January.
    10. Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
    11. Sabater-Grande, Gerardo & Georgantzis, Nikolaos, 2002. "Accounting for risk aversion in repeated prisoners' dilemma games: an experimental test," Journal of Economic Behavior & Organization, Elsevier, vol. 48(1), pages 37-50, May.
    12. Aurora García-Gallego & Nikolaos Georgantzís & Pedro Pereira & José C. Pernías-Cerrillo, 2004. "Risk Attitudes and Internet Search Engines: Theory and Experimental Evidence," Working Papers 04-03, NET Institute, revised Oct 2004.
    13. Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-969, July.
    14. Timothy N. Cason & Shakun Datta, 2008. "Costly Buyer Search in Laboratory Markets with Seller Advertising," Purdue University Economics Working Papers 1212, Purdue University, Department of Economics.
    15. Stahl, Dale O, II, 1989. "Oligopolistic Pricing with Sequential Consumer Search," American Economic Review, American Economic Association, vol. 79(4), pages 700-712, September.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Aurora García-Gallego & Nikolaos Georgantzís & Ainhoa Jaramillo-Gutiérrez & Melanie Parravano, 2010. "The lottery-panel task for bi-dimensional parameter-free elicitation of risk attitudes," ThE Papers 10/12, Department of Economic Theory and Economic History of the University of Granada..

    More about this item

    JEL classification:

    • C91 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Individual Behavior
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

    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:net:wpaper:0512. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Nicholas Economides). General contact details of provider: http://www.NETinst.org/ .

    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 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.

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

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.