Asset price bubbles and crashes with near-zero-intelligence traders |
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Authors: | John Duffy M. Utku Ünver |
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Affiliation: | (1) Department of Economics, University of Pittsburgh, PA 15260 Pittsburgh, USA;(2) Department of Economics, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, TURKEY |
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Abstract: | Summary. We examine whether a simple agent-based model can generate asset price bubbles and crashes of the type observed in a series of laboratory asset market experiments beginning with the work of Smith, Suchanek and Williams (1988). We follow the methodology of Gode and Sunder (1993, 1997) and examine the outcomes that obtain when populations of zero-intelligence (ZI) budget constrained, artificial agents are placed in the various laboratory market environments that have given rise to price bubbles. We have to put more structure on the behavior of the ZI-agents in order to address features of the laboratory asset bubble environment. We show that our model of near-zero-intelligence traders, operating in the same double auction environments used in several different laboratory studies, generates asset price bubbles and crashes comparable to those observed in laboratory experiments and can also match other, more subtle features of the experimental data.Received: 15 July 2003, Revised: 28 September 2004, JEL Classification Numbers: D83, D84, G12. Correspondence to: John DuffyWe would like to thank an Anonymous referee, Guillaume Frechette, David Laibson, Al Roth and participants in Harvard Experimental and Behavioral Economics Workshop for their comments, and Charles Noussair for providing his data set. |
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Keywords: | Bubbles Zero-intelligence traders Double auction Agent-based models Experimental economics. |
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