Correlation Neglect in Belief Formation
Many information structures generate correlated rather than mutually independent signals, the news media being a prime example. This paper shows experimentally that in such contexts many people neglect these correlations in the updating process and treat correlated information as independent. In consequence, people's beliefs are excessively sensitive to well-connected information sources, implying a pattern of "overshooting" beliefs. Additionally, in an experimental asset market, 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 caused by correlated signals give rise to predictable price bubbles and crashes. These findings are reminiscent of popular narratives according to which aggregate booms and busts might be driven by the spread of "stories". Our results also lend direct support to recent models of boundedly rational social learning.
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- Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, 2012.
"Salience Theory of Choice Under Risk,"
The Quarterly Journal of Economics,
Oxford University Press, vol. 127(3), pages 1243-1285.
- Pedro Bordalo & Nicola Gennaioli & Andrei Shleifer, . "Salience Theory of Choice Under Risk," Working Paper 29210, Harvard University OpenScholar.
- 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, 2010. "Salience Theory of Choice Under Risk," NBER Working Papers 16387, National Bureau of Economic Research, Inc.
- Shleifer, Andrei & Bordalo, Pedro & Gennaioli, Nicola, 2012. "Salience Theory of Choice Under Risk," Scholarly Articles 10636303, Harvard University Department of Economics.
- Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer, vol. 10(2), pages 171-178, June.
- Selten, Reinhard, 1996.
"Axiomatic Characterization of the Quadratic Scoring Rule,"
Discussion Paper Serie B
390, University of Bonn, Germany.
- Reinhard Selten, 1998. "Axiomatic Characterization of the Quadratic Scoring Rule," Experimental Economics, Springer, vol. 1(1), pages 43-61, June.
- 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.
- 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, 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.
- 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., 2009. "Cognitive Abilities and Behavioral Biases," Working Papers 0465, University of Heidelberg, Department of Economics.
- Oechssler, Jörg & Roider, Andreas & Schmitz, Patrick W., 2008. "Cognitive Abilities and Behavioral Biases," IZA Discussion Papers 3481, Institute for the Study of Labor (IZA).
- 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.
- repec:kap:expeco:v:1:y:1998:i:1:p:43-62 is not listed on IDEAS
- 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.
- 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.
- 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.
- Gneezy, U. & Kapteyn, A. & Potters, J.J.M., 2002.
"Evaluation Periods and Asset Prices in a Market Experiment,"
2002-8, Tilburg University, Center for Economic Research.
- 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.
- Uri Gneezy & Arie Kapteyn & Jan Potters, 2002. "Evaluation Periods and Assett Prices in a Market Experiment," Working Papers 02-02, RAND Corporation Publications Department.
- 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.
- Luca Corazzini & Filippo Pavesi & Beatrice Petrovich & Luca Stanca, 2010. "Influential Listeners: An Experiment on Persuasion Bias in Social Networks," Working Papers 196, University of Milano-Bicocca, Department of Economics, revised Aug 2010.
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