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Effect of Uncertainty about Others' Rationality in Experimental Asset Markets: An Experimental Analysis

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Author Info

  • Eizo Akiyama

    ()
    (Faculty of Engineering, Information and Systems, University of Tsukuba - University of Tsukuba)

  • Nobuyuki Hanaki

    ()
    (AMSE - Aix-Marseille School of Economics - Aix-Marseille Univ. - Centre national de la recherche scientifique (CNRS) - Ecole des Hautes Etudes en Sciences Sociales (EHESS) - Ecole Centrale Marseille (ECM))

  • Ryuichiro Ishikawa

    ()
    (Faculty of Engineering, Information and Systems, University of Tsukuba - University of Tsukuba)

Abstract

We investigate the extent to which price deviations from fundamental values in an experimental asset market are due to the uncertainty of subjects regarding others' rationality. We do so by comparing the price forecasts submitted by subjects in two market environments: (a) all six traders are human subjects (6H), and (b) one human subject interacts with five profit-maximizing computer traders who assume all the traders are also maximizing profit (1H5C). The subjects are told explicitly about the behavioral assumption of the computer traders (in both 6H and 1H5C) as well as which environment they are in. Results from our experiments show that there is no significant difference between the distributions of the initial deviations of the forecast prices from the fundamental values in the two markets. However, as subjects learn by observing the realized prices, the magnitude of deviations becomes significantly smaller in 1H5C than in 6H markets. We also conduct additional experiments where subjects who have experienced the 1H5C market interact with five inexperienced subjects. The price forecasts initially submitted by the experienced subjects follow the fundamental value despite the fact that the subjects are explicitly told that the five other traders in the market are inexperienced subjects. These findings do not support the hypothesis that uncertainty about others' rationality plays a major role in causing substantial deviation of forecast prices from the fundamental values in these asset market experiments.

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Bibliographic Info

Paper provided by HAL in its series Working Papers with number halshs-00793613.

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Date of creation: Nov 2012
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Handle: RePEc:hal:wpaper:halshs-00793613

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Related research

Keywords: Rationality; Common knowledge; Experiment; Asset Markets; Computer Traders;

References

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  1. Miguel Costa-Gomes & Vincent P. Crawford, 2004. "Cognition And Behavior In Two-Person Guessing Games: An Experimental Study," Levine's Bibliography 122247000000000143, UCLA Department of Economics.
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  13. Jürgen Huber & Michael Kirchler, 2012. "The impact of instructions and procedure on reducing confusion and bubbles in experimental asset markets," Experimental Economics, Springer, vol. 15(1), pages 89-105, March.
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Citations

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Cited by:
  1. Eizo Akiyama & Nobuyuki Hanaki & Ryuichiro Ishikawa, 2013. "How Do Experienced Traders Respond to Inflows of Inexperienced Traders? An Experimental Analysis," Working Papers halshs-00920413, HAL.
  2. Bao, T. & Hommes, C.H. & Makarewicz, T.A., 2014. "Bubble Formation and (In)efficient Markets in Learning-to-Forecast and -Optimize Experiments," CeNDEF Working Papers 14-01, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.
  3. John Duffy & Te Bao, 2013. "Adaptive vs. Eductive Learning: Theory and Evidence," Working Papers 518, University of Pittsburgh, Department of Economics, revised Dec 2013.
  4. Eizo Akiyama & Nobuyuki Hanaki & Ryuichiro Ishikawa, 2013. "It is Not Just Confusion! Strategic Uncertainty in an Experimental Asset Market," AMSE Working Papers 1340, Aix-Marseille School of Economics, Marseille, France, revised 08 Aug 2013.

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