Correlation Neglect in Belief Formation
A frequent feature of information structures is that they generate signals which are not mutually independent, but rather rely on a common set of underlying information. Using a simple experimental design, we show that in such contexts many people neglect correlations in the updating process, leading to systematically "overshooting" beliefs. This finding lends direct support to recent models of boundedly rational learning in social networks. In an experimental market setting, correlation neglect not only drives overoptimism and overpessimism at the individual level, but also affects aggregate outcomes in a systematic manner. In particular, the excessive confidence swings produced by correlated information structures translate into predictable price bubbles and crashes. Finally, we show the robustness of correlation neglect in a naturally occurring informational environment, in which subjects predict GDP growth on the basis of real news reports.
|Date of creation:||2013|
|Date of revision:|
|Contact details of provider:|| Web page: http://www.socialpolitik.org/|
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- repec:kap:expeco:v:1:y:1998:i:1:p:43-62 is not listed on IDEAS
- Uri Gneezy & Arie Kapteyn & Jan Potters, 2003.
"Evaluation Periods and Asset Prices in a Market Experiment,"
Journal of Finance,
American Finance Association, vol. 58(2), pages 821-838, 04.
- Gneezy, U. & Kapteyn, A. & Potters, J.J.M., 2002. "Evaluation Periods and Asset Prices in a Market Experiment," Discussion Paper 2002-8, Tilburg University, Center for Economic Research.
- Uri Gneezy & Arie Kapteyn & Jan Potters, 2002. "Evaluation Periods and Assett Prices in a Market Experiment," Working Papers 02-02, RAND Corporation Publications Department.
- Oechssler, Jörg & Roider, Andreas & Schmitz, Patrick W., 2008.
"Cognitive Abilities and Behavioral Biases,"
Sonderforschungsbereich 504 Publications
08-05, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
- Oechssler, Jörg & Roider, Andreas & Schmitz, Patrick W., 2008. "Cognitive Abilities and Behavioral Biases," IZA Discussion Papers 3481, Institute for the Study of Labor (IZA).
- Oechssler, Jörg & Roider, Andreas & Schmitz, Patrick W., 2009. "Cognitive Abilities and Behavioral Biases," Working Papers 0465, University of Heidelberg, Department of Economics.
- Andrei Shleifer & Nicola Gennaioli & Pedro Bordalo, 2011.
"Salience theory of choice under risk,"
2011 Meeting Papers
1442, Society for Economic Dynamics.
- Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, . "Salience Theory of Choice Under Risk," Working Paper 29210, Harvard University OpenScholar.
- Shleifer, Andrei & Bordalo, Pedro & Gennaioli, Nicola, 2012. "Salience Theory of Choice Under Risk," Scholarly Articles 10636303, Harvard University Department of Economics.
- Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, 2010. "Salience Theory of Choice Under Risk," NBER Working Papers 16387, National Bureau of Economic Research, Inc.
- Reinhard Selten, 1998.
"Axiomatic Characterization of the Quadratic Scoring Rule,"
Springer, vol. 1(1), pages 43-61, June.
- Selten, Reinhard, 1996. "Axiomatic Characterization of the Quadratic Scoring Rule," Discussion Paper Serie B 390, University of Bonn, Germany.
- Smith, Vernon L & Suchanek, Gerry L & Williams, Arlington W, 1988. "Bubbles, Crashes, and Endogenous Expectations in Experimental Spot Asset Markets," Econometrica, Econometric Society, vol. 56(5), pages 1119-51, September.
- Brian D. Kluger & Steve B. Wyatt, 2004. "Are Judgment Errors Reflected in Market Prices and Allocations? Experimental Evidence Based on the Monty Hall Problem," Journal of Finance, American Finance Association, vol. 59(3), pages 969-998, 06.
- George A. Akerlof, 2009. "How Human Psychology Drives the Economy and Why It Matters," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 91(5), pages 1175-1175.
- Tim Grebe & Julia Schmid & Andreas Stiehler, 2006.
"Do Individuals Recognize Cascade Behavior of Others? - An Experimental Study -,"
SFB 649 Discussion Papers
SFB649DP2006-079, Sonderforschungsbereich 649, Humboldt University, Berlin, Germany.
- Grebe, Tim & Schmid, Julia & Stiehler, Andreas, 2008. "Do individuals recognize cascade behavior of others? - An experimental study," Journal of Economic Psychology, Elsevier, vol. 29(2), pages 197-209, April.
- Grebe, Tim & Schmid, Julia & Stiehler, Andreas, 2006. "Do individuals recognize cascade behavior of others? An Experimental Study," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 180, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
- Luca Corazzini & Filippo Pavesi & Beatrice Petrovich & Luca Stanca, 2010.
"Influential Listeners: An Experiment on Persuasion Bias in Social Networks,"
196, University of Milano-Bicocca, Department of Economics, revised Aug 2010.
- Corazzini, Luca & Pavesi, Filippo & Petrovich, Beatrice & Stanca, Luca, 2012. "Influential listeners: An experiment on persuasion bias in social networks," European Economic Review, Elsevier, vol. 56(6), pages 1276-1288.
- Camerer, Colin F, 1987. "Do Biases in Probability Judgment Matter in Markets? Experimental Evidence," American Economic Review, American Economic Association, vol. 77(5), pages 981-97, December.
- Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer, vol. 10(2), pages 171-178, June.
When requesting a correction, please mention this item's handle: RePEc:zbw:vfsc13:79900. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (ZBW - German National Library of Economics)
If references are entirely missing, you can add them using this form.