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Two Heads Are Less Bubbly than One: Team Decision-Making in an Experimental Asset Market

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  • Cheung, Stephen L.

    () (University of Sydney)

  • Palan, Stefan

    () (University of Graz)

Abstract

We study the effect of team decision-making on bubbles and crashes in experimental asset markets of the kind introduced by Smith, Suchanek and Williams (1988). We find that populating such markets with teams of size two instead of individuals significantly reduces the severity of mispricing. In particular we observe that under our teams treatment, deviations in prices away from intrinsic value are significantly smaller in magnitude, shorter in duration and associated with lower volume and price volatility. We also find an unexpected gender effect in team composition, manifesting itself in more extreme – though not consistently more profitable – behaviour by all-male teams. Since these effects are not observed among male participants generally, we conjecture that they may be due to factors specific to the psychology of decision-making in male-dominated environments.

Suggested Citation

  • Cheung, Stephen L. & Palan, Stefan, 2009. "Two Heads Are Less Bubbly than One: Team Decision-Making in an Experimental Asset Market," IZA Discussion Papers 4507, Institute for the Study of Labor (IZA).
  • Handle: RePEc:iza:izadps:dp4507
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    Cited by:

    1. Rau, Holger A., 2015. "The disposition effect in team investment decisions: Experimental evidence," Center for European, Governance and Economic Development Research Discussion Papers 256, University of Goettingen, Department of Economics.
    2. Baethge, Caroline, 2016. "Performance in the beauty contest: How strategic discussion enhances team reasoning," Passauer Diskussionspapiere, Betriebswirtschaftliche Reihe B-17-16, University of Passau, Faculty of Business and Economics.
    3. Haoran He & Marie Claire Villeval, 2014. "Are teams less inequality averse than individuals?," Post-Print halshs-01077253, HAL.
    4. repec:eee:jeborg:v:138:y:2017:i:c:p:111-124 is not listed on IDEAS
    5. John Griffin, 2015. "Risk Premia and Knightian Uncertainty in an Experimental Market Featuring a Long-Lived Asset," Fordham Economics Discussion Paper Series dp2015-01er:dp2015-01, Fordham University, Department of Economics.
    6. repec:eee:eecrev:v:100:y:2017:i:c:p:72-94 is not listed on IDEAS
    7. Haoran He & Marie Claire Villeval, 2014. "Are team members less inequality averse than individual decision makers?," Working Papers halshs-00996545, HAL.
    8. Cheung, Stephen L. & Hedegaard, Morten & Palan, Stefan, 2014. "To see is to believe: Common expectations in experimental asset markets," European Economic Review, Elsevier, vol. 66(C), pages 84-96.
    9. Owen Powell & Natalia Shestakova, 2017. "The robustness of mispricing results in experimental asset markets," Vienna Economics Papers 1702, University of Vienna, Department of Economics.
    10. He, Haoran & Villeval, Marie Claire, 2017. "Are group members less inequality averse than individual decision makers?," Journal of Economic Behavior & Organization, Elsevier, vol. 138(C), pages 111-124.
    11. Matthias Weber & John Duffy & Arthur Schram, 2016. "An Experimental Study of Bond Market Pricing," Tinbergen Institute Discussion Papers 16-059/I, Tinbergen Institute.
    12. Füllbrunn, Sascha & Rau, Holger A. & Weitzel, Utz, 2014. "Does ambiguity aversion survive in experimental asset markets?," Journal of Economic Behavior & Organization, Elsevier, vol. 107(PB), pages 810-826.
    13. Rau, Holger A., 2015. "The disposition effect in team investment decisions: Experimental evidence," Journal of Banking & Finance, Elsevier, vol. 61(C), pages 272-282.
    14. Füllbrunn, Sascha & Rau, Holger & Weitzel, Utz, 2013. "Do ambiguity effects survive in experimental asset markets?," MPRA Paper 44700, University Library of Munich, Germany.
    15. Tamar Kugler & Edgar E. Kausel & Martin G. Kocher, 2012. "Are Groups more Rational than Individuals? A Review of Interactive Decision Making in Groups," CESifo Working Paper Series 3701, CESifo Group Munich.
    16. Jingjing Zhang, 2012. "Communication in asymmetric group competition over public goods," ECON - Working Papers 069, Department of Economics - University of Zurich.
    17. Stefan Palan, 2014. "A Software for Asset Market Experiments," Working Paper Series, Social and Economic Sciences 2014-01, Faculty of Social and Economic Sciences, Karl-Franzens-University Graz.
    18. Giovanni Giusti & Janet Hua Jiang & Yiping Xu, 2014. "Interest on Cash, Fundamental Value Process and Bubble Formation on Experimental Asset Markets," Staff Working Papers 14-18, Bank of Canada.
    19. Stefan Palan, 2013. "A Review of Research into Smith, Suchanek and Williams Markets," Working Paper Series, Social and Economic Sciences 2013-04, Faculty of Social and Economic Sciences, Karl-Franzens-University Graz.
    20. Stéphane Robin & Katerina Straznicka & Marie Claire Villeval, 2012. "Bubbles and Incentives : An Experiment on Asset Markets," Working Papers halshs-00768434, HAL.
    21. Butler, David & Cheung, Stephen L., 2018. "Mind, Body, Bubble! Psychological and Biophysical Dimensions of Behavior in Experimental Asset Markets," IZA Discussion Papers 11563, Institute for the Study of Labor (IZA).
    22. Praveen Kujal & Owen Powell, 2017. "Bubbles in Experimental Asset Markets," Working Papers 17-01, Chapman University, Economic Science Institute.
    23. John Griffin, 2015. "Risk Premia and Knightian Uncertainty in an Experimental Market Featuring a Long-Lived Asset," Fordham Economics Discussion Paper Series dp2015-01, Fordham University, Department of Economics.

    More about this item

    Keywords

    gender composition of teams; asset market experiments; group decision-making; price bubbles;

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D70 - Microeconomics - - Analysis of Collective Decision-Making - - - General
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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