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American Economic Review: Vol. 95 No. 5 (December 2005)

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Herding and Contrarian Behavior in Financial Markets: An Internet Experiment

Article Citation

Drehmann, Mathias, Jörg Oechssler, and Andreas Roider. 2005. "Herding and Contrarian Behavior in Financial Markets: An Internet Experiment." American Economic Review, 95(5): 1403-1426.

DOI: 10.1257/000282805775014317

Abstract

We report results of an Internet experiment designed to test the theory of informational cascades in financial markets (Christopher Avery and Peter Zemsky, 1998). More than 6,400 subjects, including a subsample of 267 consultants from an international consulting firm, participated in the experiment. We find that the presence of a flexible market price prevents herding. The presence of contrarian behavior distorts prices, however, and even after 20 decisions, convergence to the fundamental value is rare. We also report some interesting differences with respect to subjects' fields of study. Reassuringly, the behavior of the consultants turns out to be not significantly different from that of the remaining subjects.

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Authors

Drehmann, Mathias
Oechssler, Jörg
Roider, Andreas


American Economic Review


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