This article studies the causal effect of individuals' overconfidence and bounded rationality on information aggregation by using a new multiperiod game in which agents are rewarded for submitting accurate estimates of an unknown asset's value based on (i) their private information and (ii) others' past estimates. By carrying out laboratory sessions of this game in which subjects' overconfidence is a treatment variable, I find that overconfidence affects the information aggregation process by increasing the dispersion of estimates and decreasing the rate of estimates' convergence. However, even when subjects are not overconfident, qualitatively similar deviations from the fully rational model predictions are observed. I show that this can be explained by subjects' strategic response to errors. The Author 2008. Published by Oxford University Press on behalf of The Society for Financial Studies. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.
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Article provided by Oxford University Press for Society for Financial Studies in its journal The Review of Financial Studies.
Volume (Year): 22 (2009) Issue (Month): 5 (May) Pages: 1889-1914 Download reference. The following formats are available: HTML
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