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Biased Beliefs in Search Markets

Author

Listed:
  • Gamp, Tobias

    (HU Berlin)

  • Krähmer, Daniel

    (University of Bonn)

Abstract

We study the implications of biased consumer beliefs for search market outcomes in the seminal framework due to Diamond (1971). Biased consumers base their search strategy on a belief function which specifies for any (true) distribution of utility offers in the market a possibly incorrect distribution of utility offers. If biased consumers overestimate the best offer in the market, a novel type of equilibrium may emerge in which firms make exceptionally favourable offers in order to meet biased consumers' unreasonable high expectations which then become partially self-fulfilling. Consequently, the presence of biased consumers may improve the welfare of all consumers.

Suggested Citation

  • Gamp, Tobias & Krähmer, Daniel, 2022. "Biased Beliefs in Search Markets," Rationality and Competition Discussion Paper Series 365, CRC TRR 190 Rationality and Competition.
    • Handle: RePEc:rco:dpaper:365
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    References listed on IDEAS

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    1. Ignacio Esponda & Demian Pouzo, 2016. "Berk–Nash Equilibrium: A Framework for Modeling Agents With Misspecified Models," Econometrica, Econometric Society, vol. 84, pages 1093-1130, May.
    2. Mark Armstrong & Yongmin Chen, 2009. "Inattentive Consumers and Product Quality," Journal of the European Economic Association, MIT Press, vol. 7(2-3), pages 411-422, 04-05.
    3. Stiglitz, J E, 1979. "Equilibrium in Product Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 69(2), pages 339-345, May.
    4. Alexei Parakhonyak & Anton Sobolev, 2015. "Non‐Reservation Price Equilibrium and Search without Priors," Economic Journal, Royal Economic Society, vol. 0(584), pages 887-909, May.
    5. Steven Salop & Joseph Stiglitz, 1977. "Bargains and Ripoffs: A Model of Monopolistically Competitive Price Dispersion," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 44(3), pages 493-510.
    6. Benjamin Enke & Florian Zimmermann, 2019. "Correlation Neglect in Belief Formation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 86(1), pages 313-332.
    7. Stephan Lauermann & Wolfram Merzyn & Gábor Virág, 2018. "Learning and Price Discovery in a Search Market," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 85(2), pages 1159-1192.
    8. Maarten Janssen & Sandro Shelegia, 2020. "Beliefs and Consumer Search in a Vertical Industry [Can Small Deviations from Rationality Make Significant Differences to Economic Equilibria?]," Journal of the European Economic Association, European Economic Association, vol. 18(5), pages 2359-2393.
    9. Varian, Hal R, 1980. "A Model of Sales," American Economic Review, American Economic Association, vol. 70(4), pages 651-659, September.
    10. Jehiel, Philippe, 2005. "Analogy-based expectation equilibrium," Journal of Economic Theory, Elsevier, vol. 123(2), pages 81-104, August.
    11. Daniel Garcia & Sandro Shelegia, 2018. "Consumer search with observational learning," RAND Journal of Economics, RAND Corporation, vol. 49(1), pages 224-253, March.
    12. Diamond, Peter A., 1971. "A model of price adjustment," Journal of Economic Theory, Elsevier, vol. 3(2), pages 156-168, June.
    13. Zhou, Jidong, 2009. "Prominence and Consumer Search: The Case With Multiple Prominent Firms," MPRA Paper 12554, University Library of Munich, Germany.
    14. Janssen, Maarten C.W. & Parakhonyak, Alexei & Parakhonyak, Anastasia, 2017. "Non-reservation price equilibria and consumer search," Journal of Economic Theory, Elsevier, vol. 172(C), pages 120-162.
    15. Mark Armstrong & John Vickers & Jidong Zhou, 2009. "Prominence and consumer search," RAND Journal of Economics, RAND Corporation, vol. 40(2), pages 209-233, June.
    16. Asher Wolinsky, 1986. "True Monopolistic Competition as a Result of Imperfect Information," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 101(3), pages 493-511.
    17. Catherine Waddams Price & Minyan Zhu, 2016. "Empirical Evidence Of Consumer Response In Regulated Markets," Journal of Competition Law and Economics, Oxford University Press, vol. 12(1), pages 113-149.
    18. Michael Grubb, 2015. "Failing to Choose the Best Price: Theory, Evidence, and Policy," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 47(3), pages 303-340, November.
    19. Simon P. Anderson & Regis Renault, 1999. "Pricing, Product Diversity, and Search Costs: A Bertrand-Chamberlin-Diamond Model," RAND Journal of Economics, The RAND Corporation, vol. 30(4), pages 719-735, Winter.
    20. Heidhues, Paul & Koszegi, Botond & Strack, Philipp, 2021. "Convergence in models of misspecified learning," Theoretical Economics, Econometric Society, vol. 16(1), January.
    21. Matsumoto, Brett & Spence, Forrest, 2016. "Price beliefs and experience: Do consumers’ beliefs converge to empirical distributions with repeated purchases?," Journal of Economic Behavior & Organization, Elsevier, vol. 126(PA), pages 243-254.
    22. Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-969, July.
    23. Dana, James D, Jr, 1994. "Learning in an Equilibrium Search Model," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 35(3), pages 745-771, August.
    24. Kohn, Meir G. & Shavell, Steven, 1974. "The theory of search," Journal of Economic Theory, Elsevier, vol. 9(2), pages 93-123, October.
    25. Stahl, Dale O, II, 1989. "Oligopolistic Pricing with Sequential Consumer Search," American Economic Review, American Economic Association, vol. 79(4), pages 700-712, September.
    26. Roland Bénabou & Robert Gertner, 1993. "Search with Learning from Prices: Does Increased Inflationary Uncertainty Lead to Higher Markups?," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 60(1), pages 69-93.
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    More about this item

    Keywords

    consumer search; bounded rationality; cursed beliefs;
    All these keywords.

    JEL classification:

    • D18 - Microeconomics - - Household Behavior - - - Consumer Protection
    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • 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

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