Overconfident for real? Proper scoring for confidence intervals
AbstractStudies show that people tend to provide overly narrow confidence intervals for unknown values. Such a form of overconfidence would have an important impact on financial markets, among other domains, leading i.a. to excessive trading. The present study is one of the very few that try to incentivize reporting correct confidence intervals. To this end, a reward scheme is proposed, based on a combination of asymmetric loss functions minimized by appropriate quantiles of a probability distribution. In the experiment I find that incentivized subjects provide wider confidence intervals, obtaining a higher hit rate than the control group. The effect is stronger than that of feedback and explicit warning. These findings suggest that the overly narrow confidence intervals reported elsewhere are partly due to an insufficient mental effort that subjects exert and that they can be induced to do so by the proposed incentive scheme.
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Bibliographic InfoPaper provided by Faculty of Economic Sciences, University of Warsaw in its series Working Papers with number 2011-15.
Length: 23 pages
Date of creation: 2011
Date of revision:
overconfidence; calibration; confidence intervals; proper scoring rules;
Find related papers by JEL classification:
- C44 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Operations Research; Statistical Decision Theory
- C91 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Individual Behavior
- D03 - Microeconomics - - General - - - Behavioral Economics; Underlying Principles
- D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations
- G17 - Financial Economics - - General Financial Markets - - - Financial Forecasting and Simulation
This paper has been announced in the following NEP Reports:
- NEP-ALL-2011-10-09 (All new papers)
- NEP-CBE-2011-10-09 (Cognitive & Behavioural Economics)
- NEP-EXP-2011-10-09 (Experimental Economics)
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- Marie-Pierre Dargnies & Guillaume Hollard, 2008.
"Incentives to learn calibration : a gender-dependent impact,"
Documents de travail du Centre d'Economie de la Sorbonne
v08088, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
- Marie-pierre Dargnies & Guillaume Hollard, 2009. "Incentives to learn calibration: a gender-dependent impact," Economics Bulletin, AccessEcon, vol. 29(3), pages 1820-1828.
- Marie-Pierre Dargnies & Guillaume Hollard, 2008. "Incentives to Learn Calibration : a Gender-Dependent Impact," UniversitÃ© Paris1 PanthÃ©on-Sorbonne (Post-Print and Working Papers) halshs-00348826, HAL.
- Kahneman, Daniel & Tversky, Amos, 1979.
"Prospect Theory: An Analysis of Decision under Risk,"
Econometric Society, vol. 47(2), pages 263-91, March.
- Amos Tversky & Daniel Kahneman, 1979. "Prospect Theory: An Analysis of Decision under Risk," Levine's Working Paper Archive 7656, David K. Levine.
- Ben-David, Itzhak & Graham, John R. & Harvey, Campbell R., 2010.
Working Paper Series
2010-12, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
- Biais, Bruno & Hilton, Denis & Mazurier, Karine & Pouget, Sébastien, 2005.
"Judgmental Overconfidence, Self-Monitoring and Trading Performance in an Experimental Financial Market,"
Open Access publications from University of Toulouse 1 Capitole
http://neeo.univ-tlse1.fr, University of Toulouse 1 Capitole.
- Bruno Biais & Denis Hilton & Karine Mazurier & Sébastien Pouget, 2005. "Judgemental Overconfidence, Self-Monitoring, and Trading Performance in an Experimental Financial Market," Review of Economic Studies, Oxford University Press, vol. 72(2), pages 287-312.
- Biais, Bruno & Hilton, Denis & Mazurier, Karine & Pouget, Sébastien, 2004. "Judgmental Overconfidence, Self-Monitoring and Trading Performance in an Experimental Financial Market," IDEI Working Papers 259, Institut d'Économie Industrielle (IDEI), Toulouse.
- Karl Schlag & Joël van der Weele, 2009. "Efficient interval scoring rules," Economics Working Papers 1176, Department of Economics and Business, Universitat Pompeu Fabra.
- Smith, Vernon L & Walker, James M, 1993. "Monetary Rewards and Decision Cost in Experimental Economics," Economic Inquiry, Western Economic Association International, vol. 31(2), pages 245-61, April.
- Murphy, James J. & Stevens, Thomas H., 2004. "Contingent Valuation, Hypothetical Bias, and Experimental Economics," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 33(2), October.
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