Illusion of control as a source of poor diversification: An experimental approach
This paper investigates factors influencing individual portfolio allocations with particular focus on the role of illusion of control. By forming their portfolio of two risky lotteries and one risk-less alternative, subjects are requested to reach a target investment profit, whereby equal diversification between the two risky lotteries is part of the solution space. Subjects however excessively invest in the lottery for which they can determine the outcome by rolling the die themselves indicating that they are prone to illusion of control. However, the effect vanishes with experience. In contrast, presenting random sequences of prior outcomes reduces biased investments. In line with the excessive extrapolation hypothesis, the more positive outcomes observed from past draws, the more likely is a positive prediction for this lottery, which is then followed by higher investment. Also, offering a default portfolio strongly determines final allocations.
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- Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
- Gur Huberman & Sheena Iyengar & Wei Jiang, 2007. "Defined Contribution Pension Plans: Determinants of Participation and Contributions Rates," Journal of Financial Services Research, Springer, vol. 31(1), pages 1-32, February.
- Charness, Gary & Gneezy, Uri, 2003.
"Portfolio Choice and Risk Attitudes: An Experiment,"
University of California at Santa Barbara, Economics Working Paper Series
qt7vz7w609, Department of Economics, UC Santa Barbara.
- Gary Charness & Uri Gneezy, 2010. "Portfolio Choice And Risk Attitudes: An Experiment," Economic Inquiry, Western Economic Association International, vol. 48(1), pages 133-146, 01.
- Lucy F. Ackert & Narat Charupat & Bryan K. Church & James Tompkins & Richard Deaves, 2003.
"An experimental examination of the house money effect in a multi-period setting,"
FRB Atlanta Working Paper
2003-13, Federal Reserve Bank of Atlanta.
- Lucy Ackert & Narat Charupat & Bryan Church & Richard Deaves, 2006. "An experimental examination of the house money effect in a multi-period setting," Experimental Economics, Springer, vol. 9(1), pages 5-16, April.
- Richard H. Thaler & Shlomo Benartzi, 2001. "Naive Diversification Strategies in Defined Contribution Saving Plans," American Economic Review, American Economic Association, vol. 91(1), pages 79-98, March.
- De Bondt, Werner F. M., 1998. "A portrait of the individual investor," European Economic Review, Elsevier, vol. 42(3-5), pages 831-844, May.
- De Bondt, Werner P. M., 1993. "Betting on trends: Intuitive forecasts of financial risk and return," International Journal of Forecasting, Elsevier, vol. 9(3), pages 355-371, November.
- Sendhil Mullainathan & Richard H. Thaler, 2000. "Behavioral Economics," NBER Working Papers 7948, National Bureau of Economic Research, Inc.
- Huberman, Gur, 2001. "Familiarity Breeds Investment," Review of Financial Studies, Society for Financial Studies, vol. 14(3), pages 659-80.
- Glaser, Markus & Langer, Thomas & Weber, Martin, 2003.
"On the Trend Recognition and Forecasting Ability of Professional Traders,"
CEPR Discussion Papers
3904, C.E.P.R. Discussion Papers.
- Glaser, Markus & Langer, Thomas & Weber, Martin, 2003. "On the trend recognition and forecasting ability of professional traders," Sonderforschungsbereich 504 Publications 03-06, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
- Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer, vol. 10(2), pages 171-178, June.
- Heath, Chip & Tversky, Amos, 1991. " Preference and Belief: Ambiguity and Competence in Choice under Uncertainty," Journal of Risk and Uncertainty, Springer, vol. 4(1), pages 5-28, January.
- Werner F. M. De Bondt & Richard H. Thaler, 1994. "Financial Decision-Making in Markets and Firms: A Behavioral Perspective," NBER Working Papers 4777, National Bureau of Economic Research, Inc.
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