Individual Rationality and Market Efficiency
AbstractThe demonstration by Smith  that prices and allocations quickly converge to the competitive equilibrium in the continuous double auction (CDA) was one of the first – and remains one of the most important results in experimental economics. His initial experiment, subsequent market experiments, and models of price adjustment and exchange have added considerably to our knowledge of how markets reach equilibrium, and how they respond to disruptions. Perhaps the best known model of exchange in CDA market experiments is the random behavior in the “zero-intelligence” (ZI) model by Gode and Sunder . They conclude that even without trader rationality the CDA generates efficient allocations and “convergence of transaction prices to the proximity of the theoretical equilibrium price,” provided only that agents meet their budget constraints. We demonstrate that – by any reasonable measure – prices don’t converge in their simulations. Their budget constraint requires that a buyer’s currency never exceeds her value for the commodity, which is an unnatural restriction. Their conclusion that market efficiency results from the structure of the CDA independent of traders’ profit seeking behavior rests on their claim that the constraints that they impose are a part of the market institution, but this is not so. We show that they in effect impose individual rationality, which is an aspect of agents' behavior. Researchers on learning in markets have been misled by their interpretation of the ZI simulations, with deleterious effects on the debate on market adjustment processes.
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Bibliographic InfoPaper provided by Purdue University, Department of Economics in its series Purdue University Economics Working Papers with number 1204.
Length: 11 pages
Date of creation: Aug 2007
Date of revision:
Bounded rationality; double auction; exchange economy; experimental economics; market experiment; "zero intelligence" model;
Find related papers by JEL classification:
- C70 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - General
- C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
- D44 - Microeconomics - - Market Structure and Pricing - - - Auctions
- D51 - Microeconomics - - General Equilibrium and Disequilibrium - - - Exchange and Production Economies
This paper has been announced in the following NEP Reports:
- NEP-ALL-2007-08-27 (All new papers)
- NEP-CBE-2007-08-27 (Cognitive & Behavioural Economics)
- NEP-CMP-2007-08-27 (Computational Economics)
- NEP-EXP-2007-08-27 (Experimental Economics)
- NEP-HPE-2007-08-27 (History & Philosophy of Economics)
- NEP-KNM-2007-08-27 (Knowledge Management & Knowledge Economy)
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- Vernon L. Smith, 1962.
"An Experimental Study of Competitive Market Behavior,"
Journal of Political Economy,
University of Chicago Press, vol. 70, pages 322.
- Vernon L. Smith, 1962. "An Experimental Study of Competitive Market Behavior," Journal of Political Economy, University of Chicago Press, vol. 70, pages 111.
- Evans, Dorla A, 1997. "The Role of Markets in Reducing Expected Utility Violations," Journal of Political Economy, University of Chicago Press, vol. 105(3), pages 622-36, June.
- Hurwicz, Leonid & Radner, Roy & Reiter, Stanley, 1975.
"A Stochastic Decentralized Resource Allocation Process: Part II,"
Econometric Society, vol. 43(3), pages 363-93, May.
- Hurwicz, Leonid & Radner, Roy & Reiter, Stanley, 1975. "A Stochastic Decentralized Resource Allocation Process: Part I," Econometrica, Econometric Society, vol. 43(2), pages 187-221, March.
- Daniel Friedman, 1982.
"Price Formation in Double Auction Markets,"
UCLA Economics Working Papers
278, UCLA Department of Economics.
- John A. List, 2004.
"Testing Neoclassical Competitive Theory in Multilateral Decentralized Markets,"
Journal of Political Economy,
University of Chicago Press, vol. 112(5), pages 1131-1156, October.
- John List, 2004. "Testing neoclassical competitive theory in multi-lateral decentralized markets," Framed Field Experiments 00176, The Field Experiments Website.
- Joaquim Silvestre & Antoni Bosch-Domenech, 2004.
"Credit Constraints In General Equilibrium: Experimental Results,"
957, University of California, Davis, Department of Economics.
- Bosch-Domenech, Antoni & Silvestre, Joaquim, 1997. "Credit Constraints in General Equilibrium: Experimental Results," Economic Journal, Royal Economic Society, vol. 107(444), pages 1445-64, September.
- Bosch-Domenech, A. & Silvestre, J., 1995. "Credit Constraint in General Equilibrium: Experimental Results," Papers 95-07, California Davis - Institute of Governmental Affairs.
- Antoni Bosch-Domènech & Joaquim Silvestre, 1996. "Credit constraints in general equilibrium: Experimental results," Economics Working Papers 105, Department of Economics and Business, Universitat Pompeu Fabra.
- Bosch-Domenech, A. & Silvestre, J., 1995. "Credit Constraint in General Equilibrium: Experimental Results," Department of Economics 95-07, California Davis - Department of Economics.
- Markose, Sheri & Arifovic, Jasmina & Sunder, Shyam, 2007. "Advances in experimental and agent-based modelling: Asset markets, economic networks, computational mechanism design and evolutionary game dynamics," Journal of Economic Dynamics and Control, Elsevier, vol. 31(6), pages 1801-1807, June.
- Tesfatsion, Leigh S., 2002. "Agent-Based Computational Economics: Growing Economies from the Bottom Up," Staff General Research Papers 5075, Iowa State University, Department of Economics.
- John Conlisk, 1996. "Why Bounded Rationality?," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 669-700, June.
- Gjerstad, S., 2006.
"The Competitive Market Paradox,"
Purdue University Economics Working Papers
1180, Purdue University, Department of Economics.
- Steven Gjerstad & John Dickhaut, 2003.
"Price Formation in Double Auctions,"
- Smith, Vernon L, 1982. "Microeconomic Systems as an Experimental Science," American Economic Review, American Economic Association, vol. 72(5), pages 923-55, December.
- Easley, David & Ledyard, John., . "Theories of Price Formation and Exchange in Double Oral Auctions," Working Papers 611, California Institute of Technology, Division of the Humanities and Social Sciences.
- Giuseppe Attanasi & Samuele Centorrino & Ivan Moscati, 2011. "Double Auction Equilibrium and Efficiency in a Classroom Experimental Search Market," LERNA Working Papers 11.03.337, LERNA, University of Toulouse.
- Steven Gjerstad, 2013.
"Price dynamics in an exchange economy,"
Springer, vol. 52(2), pages 461-500, March.
- Marco LiCalzi & Paolo Pellizzari, 2008. "Zero-Intelligence Trading without Resampling," Working Papers 164, Department of Applied Mathematics, Università Ca' Foscari Venezia.
- Jakob Grazzini, 2012. "Analysis of the Emergent Properties: Stationarity and Ergodicity," Journal of Artificial Societies and Social Simulation, Journal of Artificial Societies and Social Simulation, vol. 15(2), pages 7.
- Mikhail Anufriev & Jasmina Arifovic & John Ledyard & Valentyn Panchenko, 2013.
"Efficiency of continuous double auctions under individual evolutionary learning with full or limited information,"
Journal of Evolutionary Economics,
Springer, vol. 23(3), pages 539-573, July.
- Anufriev, M. & Arifovic, J. & Ledyard, D. & Panchenko, V., 2010. "Efficiency of Continuous Double Auctions under Individual Evolutionary Learning with Full or Limited Information," CeNDEF Working Papers 10-01, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.
- Grazzini, J., 2011. "Experimental Based, Agent Based Stock Market," CeNDEF Working Papers 11-07, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.
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