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True overconfidence: The inability of rational information processing to account for apparent overconfidence

  • Merkle, Christoph
  • Weber, Martin

The better-than-average effect describes the tendency of people to perceive their skills and virtues as being above average. We derive a new experimental paradigm to distinguish between two possible explanations for the effect, namely rational information processing and overconfidence. Experiment participants evaluate their relative position within the population by stating their complete belief distribution. This approach sidesteps recent methodology concerns associated with previous research. We find that people hold beliefs about their abilities in different domains and tasks which are inconsistent with rational information processing. Both on an aggregated and an individual level, they show considerable overplacement. We conclude that overconfidence is not only apparent overconfidence but rather the consequence of a psychological bias.

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Article provided by Elsevier in its journal Organizational Behavior and Human Decision Processes.

Volume (Year): 116 (2011)
Issue (Month): 2 ()
Pages: 262-271

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Handle: RePEc:eee:jobhdp:v:116:y:2011:i:2:p:262-271
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  1. Cooper, Arnold C. & Woo, Carolyn Y. & Dunkelberg, William C., 1988. "Entrepreneurs' perceived chances for success," Journal of Business Venturing, Elsevier, vol. 3(2), pages 97-108.
  2. Glaser, Markus & Weber, Martin, 2003. "Overconfidence and Trading Volume," Sonderforschungsbereich 504 Publications 03-07, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
  3. Olivier Compte & Andrew Postlewaite, 2001. "Confidence-Enhanced Performance," PIER Working Paper Archive 04-023, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania, revised 01 May 2003.
  4. Klayman, Joshua & Soll, Jack B. & Gonzalez-Vallejo, Claudia & Barlas, Sema, 1999. "Overconfidence: It Depends on How, What, and Whom You Ask, , , , , , , , ," Organizational Behavior and Human Decision Processes, Elsevier, vol. 79(3), pages 216-247, September.
  5. Ulrike Malmendier & Geoffrey Tate, 2005. "CEO Overconfidence and Corporate Investment," Journal of Finance, American Finance Association, vol. 60(6), pages 2661-2700, December.
  6. Terrance Odean, 1998. "Volume, Volatility, Price and Profit When All Traders Are Above Average," Finance 9803001, EconWPA.
  7. Greiner, Ben, 2004. "An Online Recruitment System for Economic Experiments," MPRA Paper 13513, University Library of Munich, Germany.
  8. Benoît, Jean-Pierre & Dubra, Juan, 2008. "Overconfidence?," MPRA Paper 765, University Library of Munich, Germany.
  9. Camerer, Colin F. & Hogarth, Robin M., 1999. "The Effects of Financial Incentives in Experiments: A Review and Capital-Labor-Production Framework," Working Papers 1059, California Institute of Technology, Division of the Humanities and Social Sciences.
  10. Reinhard Selten, 1998. "Axiomatic Characterization of the Quadratic Scoring Rule," Experimental Economics, Springer, vol. 1(1), pages 43-61, June.
  11. Terrance Odean, 1998. "Volume, Volatility, Price, and Profit When All Traders Are Above Average," Journal of Finance, American Finance Association, vol. 53(6), pages 1887-1934, December.
  12. Dawes, Robyn M. & Mulford, Matthew, 1996. "The False Consensus Effect and Overconfidence: Flaws in Judgment or Flaws in How We Study Judgment?," Organizational Behavior and Human Decision Processes, Elsevier, vol. 65(3), pages 201-211, March.
  13. Eric Van den Steen, 2004. "Rational Overoptimism (and Other Biases)," American Economic Review, American Economic Association, vol. 94(4), pages 1141-1151, September.
  14. Lu�s Santos-Pinto & Joel Sobel, 2005. "A Model of Positive Self-Image in Subjective Assessments," American Economic Review, American Economic Association, vol. 95(5), pages 1386-1402, December.
  15. Jose A. Scheinkman & Wei Xiong, 2003. "Overconfidence and Speculative Bubbles," Journal of Political Economy, University of Chicago Press, vol. 111(6), pages 1183-1219, December.
  16. Moore, Don A. & Cain, Daylian M., 2007. "Overconfidence and underconfidence: When and why people underestimate (and overestimate) the competition," Organizational Behavior and Human Decision Processes, Elsevier, vol. 103(2), pages 197-213, July.
  17. Botond Köszegi, 2006. "Ego Utility, Overconfidence, and Task Choice," Journal of the European Economic Association, MIT Press, vol. 4(4), pages 673-707, 06.
  18. Kent Daniel & David Hirshleifer & Avanidhar Subrahmanyam, 1998. "Investor Psychology and Security Market Under- and Overreactions," Journal of Finance, American Finance Association, vol. 53(6), pages 1839-1885, December.
  19. Juslin, Peter, 1994. "The Overconfidence Phenomenon as a Consequence of Informal Experimenter-Guided Selection of Almanac Items," Organizational Behavior and Human Decision Processes, Elsevier, vol. 57(2), pages 226-246, February.
  20. Larrick, Richard P. & Burson, Katherine A. & Soll, Jack B., 2007. "Social comparison and confidence: When thinking you're better than average predicts overconfidence (and when it does not)," Organizational Behavior and Human Decision Processes, Elsevier, vol. 102(1), pages 76-94, January.
  21. repec:oup:qjecon:v:117:y:2002:i:3:p:871-915 is not listed on IDEAS
  22. Ehrlinger, Joyce & Johnson, Kerri & Banner, Matthew & Dunning, David & Kruger, Justin, 2008. "Why the unskilled are unaware: Further explorations of (absent) self-insight among the incompetent," Organizational Behavior and Human Decision Processes, Elsevier, vol. 105(1), pages 98-121, January.
  23. Brocas, Isabelle & Carrillo, Juan D, 2002. "Are We All Better Drivers than Average? Self-Perception and Biased Behaviour," CEPR Discussion Papers 3603, C.E.P.R. Discussion Papers.
  24. Brad M. Barber & Terrance Odean, 2000. "Trading Is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors," Journal of Finance, American Finance Association, vol. 55(2), pages 773-806, 04.
  25. Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer, vol. 10(2), pages 171-178, June.
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