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Is individual rationality essential to market price formation? The contribution of zero‐intelligence agent trading models

By Paola Tubaro

Abstract

The paper investigates the minimum level of individual rationality that is needed for market prices to converge toward their equilibrium level. It does so by examining the theoretical and methodological foundations of the ‘zerointelligence’ (ZI) agent trading approach, with which Gode and Sunder (1993a) claimed that weak individual rationality requirements suffice to obtain equilibrium prices. The paper shows that ZI agents are endowed with a higher degree of rationality than previously believed. Though not maximizing utility, they exhibit utility-improving behavior, and their decision-making rules fulfill important predictions of the theory of choice based on maximization, namely downward-sloping individual demand and upward-sloping individual supply. Additional cognitive skills would be required, were some simplifying assumptions of the basic model removed. Gode and Sunder’s analysis supports a nonneoclassical rational choice theory, in which optimization can be replaced by a variety of behavioral rules, while still preserving mportant results on the functioning of markets

Topics: BF, HB
Publisher: Routledge / Taylor & Francis Group
Year: 2009
OAI identifier: oai:gala.gre.ac.uk:5244

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Citations

  1. (1992). An Empirical Analysis of Price Formation in Double Auction Markets”,
  2. (1948). An Experimental Imperfect Market”,
  3. (1962). An Experimental Study of Competitive Market Behavior”, doi
  4. Determinants of Economic Interaction: Behavior or Structure”,
  5. Economic Theory: Structural Abstraction or Behavioral Reduction”, doi
  6. (1976). Experimental Economics: Induced Value Theory”,
  7. Exploring Market Structures with Zero-Intelligence Agents”, lecture at the Intensive Course in Agent-Based Finance,
  8. (1971). General Competitive Analysis,
  9. (1962). Irrational Behavior and Economic Theory”,
  10. (1994). L'intérêt limite de l'hypothèse de rationalité individuelle”, Cahiers d’économie politique,
  11. (2008). Learning Competitive Equilibrium
  12. (2007). Learning Competitive Equilibrium”,
  13. (2004). Markets as Artifacts: Aggregate Efficiency from Zero-Intelligence Traders”, in Models of a Man: Essays in Memory of Herbert
  14. (1982). Microeconomic Systems as an Experimental Science”,
  15. (1997). Minimal Intelligence Agents for Bargaining Behaviors in Marketbased Environments”,
  16. (1997). More than Zero-Intelligence Needed for Continuous Double Auction Trading”,
  17. (1959). Theory of Value,

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