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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.

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Bibliographic Info

Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 4507.

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Length: 42 pages
Date of creation: Oct 2009
Date of revision:
Handle: RePEc:iza:izadps:dp4507

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

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References

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  1. David J. Cooper & John H. Kagel, 2005. "Are Two Heads Better Than One? Team versus Individual Play in Signaling Games," American Economic Review, American Economic Association, vol. 95(3), pages 477-509, June.
  2. Robert S. Shupp & Arlington Williams, 2003. "Risk Preference Differentials of Small Groups and Individuals," Working Papers 200301, Ball State University, Department of Economics, revised Apr 2006.
  3. Ronald J. Baker II & Susan K. Laury & Arlington W. Williams, 2008. "Comparing Small-Group and Individual Behavior in Lottery-Choice Experiments," Southern Economic Journal, Southern Economic Association, vol. 75(2), pages 367-382, October.
  4. Kocher, Martin G. & Sutter, Matthias, 2005. "The decision maker matters: Individual versus group behaviour in experimental beauty-contest games," Munich Reprints in Economics 18213, University of Munich, Department of Economics.
  5. Bone, John & Hey, John & Suckling, John, 1999. "Are Groups More (or Less) Consistent Than Individuals?," Journal of Risk and Uncertainty, Springer, vol. 18(1), pages 63-81, April.
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  21. James Cox & Stephen Hayne, 2006. "Barking up the right tree: Are small groups rational agents?," Experimental Economics, Springer, vol. 9(3), pages 209-222, September.
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Citations

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Cited by:
  1. Stéphane Robin & Katerina Straznicka & Marie-Claire Villeval, 2012. "Bubbles and Incentives : An Experiment on Asset Markets," Working Papers halshs-00768434, HAL.
  2. He, Haoran & Villeval, Marie Claire, 2014. "Are Teams Less Inequality Averse than Individuals?," IZA Discussion Papers 8217, Institute for the Study of Labor (IZA).
  3. Cheung, Stephen L. & Hedegaard, Morten & Palan, Stefan, 2012. "To See Is To Believe: Common Expectations in Experimental Asset Markets," IZA Discussion Papers 6922, Institute for the Study of Labor (IZA).
  4. 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.
  5. 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.
  6. Powell, O.R., 2010. "Essays on experimental bubble markets," Open Access publications from Tilburg University urn:nbn:nl:ui:12-4219264, Tilburg University.
  7. Giovanni Giusti & Janet Hua Jiang & Yiping Xu, 2014. "Interest on Cash, Fundamental Value Process and Bubble Formation on Experimental Asset Markets," Working Papers 14-18, Bank of Canada.
  8. Füllbrunn, Sascha & Rau, Holger & Weitzel, Utz, 2013. "Do ambiguity effects survive in experimental asset markets?," MPRA Paper 44700, University Library of Munich, Germany.
  9. Jingjing Zhang, 2012. "Communication in asymmetric group competition over public goods," ECON - Working Papers 069, Department of Economics - University of Zurich.
  10. 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.

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