Competitive Behavior in Market Games: Evidence and Theory
We explore whether competitive outcomes arise in an experimental implementation of a market game, introduced by Shubik (1972). Market games obtain Pareto inferior (strict) Nash equilibria, in which some markets are closed. We find that subjects do not coordinate on autarkic Nash equilibria, but favor more efficient Nash equilibria in which all markets are open. As the number of subjects participating in the market game increases, the Nash equilibrium they achieve approximates the associated Walrasian equilibrium of the underlying economy. Motivated by these findings, we investigate theoretically whether evolutionary forces lead to Walrasian outcomes in market games. We introduce a strong version of evolutionary stable strategies (SESS) for finite populations. Our concept requires stability against deviations by coalitions of agents. A small coalition of trading agents is sufficient for Pareto-improving trade to be generated. In addition, provided that agents lack market power, Nash equilibria corresponding to approximate competitive outcomes constitute the only approximate SESS.
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|Date of revision:||Mar 2009|
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- Dubey, Pradeep & Shubik, Martin, 1978. "A theory of money and financial institutions. 28. The non-cooperative equilibria of a closed trading economy with market supply and bidding strategies," Journal of Economic Theory, Elsevier, vol. 17(1), pages 1-20, February.
- Jorgen W. Weibull, 1997. "Evolutionary Game Theory," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262731215, June.
- Holt, Charles A & Langan, Loren W & Villamil, Anne P, 1986. "Market Power in Oral Double Auctions," Economic Inquiry, Western Economic Association International, vol. 24(1), pages 107-23, January.
- Postlewaite, A & Schmeidler, David, 1978. "Approximate Efficiency of Non-Walrasian Nash Equilibria," Econometrica, Econometric Society, vol. 46(1), pages 127-35, January.
- Isaac, R. Mark & Plott, Charles R., 1981.
"The opportunity for conspiracy in restraint of trade : An experimental study,"
Journal of Economic Behavior & Organization,
Elsevier, vol. 2(1), pages 1-30, March.
- Isaac, R. Mark & Plott, Charles R., . "The Opportunity for Conspiracy in Restraint of Trade: An Experimental Study," Working Papers 255, California Institute of Technology, Division of the Humanities and Social Sciences.
- Gale, Douglas M, 1986. "Bargaining and Competition Part I: Characterization," Econometrica, Econometric Society, vol. 54(4), pages 785-806, July.
- Dubey, Pradeep & Shubik, Martin, 1977.
"A closed economic system with production and exchange modelled as a game of strategy,"
Journal of Mathematical Economics,
Elsevier, vol. 4(3), pages 253-287, December.
- Pradeep Dubey & Martin Shubik, 1976. "A Closed Economic System with Production and Exchange Modelled as a Game of Strategy," Cowles Foundation Discussion Papers 429, Cowles Foundation for Research in Economics, Yale University.
- Peck, James & Shell, Karl & Spear, Stephen E., 1992. "The market game: existence and structure of equilibrium," Journal of Mathematical Economics, Elsevier, vol. 21(3), pages 271-299.
- Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer, vol. 10(2), pages 171-178, June.
- Armen A. Alchian, 1950. "Uncertainty, Evolution, and Economic Theory," Journal of Political Economy, University of Chicago Press, vol. 58, pages 211.
- Peck, James & Shell, Karl, 1990. "Liquid markets and competition," Games and Economic Behavior, Elsevier, vol. 2(4), pages 362-377, December.
- Fernando Vega Redondo, 1996.
"The evolution of walrasian behavior,"
Working Papers. Serie AD
1996-05, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
- Shapley, Lloyd S & Shubik, Martin, 1977. "Trade Using One Commodity as a Means of Payment," Journal of Political Economy, University of Chicago Press, vol. 85(5), pages 937-68, October.
- Smith, Vernon L, 1982. "Microeconomic Systems as an Experimental Science," American Economic Review, American Economic Association, vol. 72(5), pages 923-55, December.
- Schaffer, Mark E., 1989. "Are profit-maximisers the best survivors? : A Darwinian model of economic natural selection," Journal of Economic Behavior & Organization, Elsevier, vol. 12(1), pages 29-45, August.
- Mark A. Satterthwaite & Steven R. Williams, 2002. "The Optimality of a Simple Market Mechanism," Econometrica, Econometric Society, vol. 70(5), pages 1841-1863, September.
- Timothy N. Cason & Daniel Friedman, 1997. "Price Formation in Single Call Markets," Econometrica, Econometric Society, vol. 65(2), pages 311-346, March.
- Sayantan Ghosal & Massimo Morelli, 2002.
"Retrading in Market Games,"
Economics Working Papers
0012, Institute for Advanced Study, School of Social Science.
- Friedman, Daniel & Ostroy, Joseph, 1995. "Competitivity in Auction Markets: An Experimental and Theoretical Investigation," Economic Journal, Royal Economic Society, vol. 105(428), pages 22-53, January.
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