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Acquisition of information and share prices: An empirical investigation of cognitive dissonance

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Elena Argentese
Helmut Luetkepohl
Massimo Motta

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Abstract

This paper deals with the determinants of agents’ acquisition of information. Our econometric evidence shows that the general index of Italian share-prices and the series of Italy’s financial newspaper sales are cointegrated, and the former series Granger-causes the latter, thereby giving support to the cognitive dissonance hypothesis: (non-professional) agents tend to buy the newspaper when share prices are high and not to buy it when share prices are low. Instead, we do not find support for the hypothesis that the agents acquire information in order to trade in the stock-market: we find no relationship between quantities exchanged in the market and newspaper sales, nor between stock market volatility and newspaper sales.

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Paper provided by European University Institute in its series Economics Working Papers with number ECO2006/32.

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Date of creation: 2006
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Handle: RePEc:eui:euiwps:eco2006/32

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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.:
  1. Roland Bénabou & Jean Tirole, 2002. "Self-Confidence And Personal Motivation," The Quarterly Journal of Economics, MIT Press, vol. 117(3), pages 871-915, August. [Downloadable!] (restricted)
  2. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-74, September. [Downloadable!] (restricted)
  3. Matthew Rabin, 1998. "Psychology and Economics," Journal of Economic Literature, American Economic Association, vol. 36(1), pages 11-46, March. [Downloadable!] (restricted)
  4. Terrance Odean, 1998. "Are Investors Reluctant to Realize Their Losses?," Journal of Finance, American Finance Association, vol. 53(5), pages 1775-1798, October. [Downloadable!] (restricted)
  5. Toda, Hiro Y & Phillips, Peter C B, 1993. "Vector Autoregressions and Causality," Econometrica, Econometric Society, vol. 61(6), pages 1367-93, November. [Downloadable!] (restricted)
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  6. Joël Peress, 2004. "Wealth, Information Acquisition, and Portfolio Choice," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 17(3), pages 879-914. [Downloadable!] (restricted)
  7. Granger, C W J, 1969. "Investigating Causal Relations by Econometric Models and Cross-Spectral Methods," Econometrica, Econometric Society, vol. 37(3), pages 424-38, July. [Downloadable!] (restricted)
  8. Juan Dolado & Helmut Lütkepohl, 1996. "Making wald tests work for cointegrated VAR systems," Econometric Reviews, Taylor and Francis Journals, vol. 15(4), pages 369-386. [Downloadable!] (restricted)
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  9. Leeat Yariv, 2002. "I'll See It When I Believe It - A Simple Model of Cognitive Consistency," Cowles Foundation Discussion Papers 1352, Cowles Foundation, Yale University. [Downloadable!]
  10. Akerlof, George A & Dickens, William T, 1982. "The Economic Consequences of Cognitive Dissonance," American Economic Review, American Economic Association, vol. 72(3), pages 307-19, June. [Downloadable!] (restricted)
  11. Rabin, Matthew, 2002. "A perspective on psychology and economics," European Economic Review, Elsevier, vol. 46(4-5), pages 657-685, May. [Downloadable!] (restricted)
  12. Matthew Rabin, 2002. "A Perspective on Psychology and Economics," Department of Economics, Working Paper Series 1003, Department of Economics, Institute for Business and Economic Research, UC Berkeley. [Downloadable!]
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  1. Riccardo Ferretti & Francesco Pattarin, 2008. "Is public information really public? The role of newspapers," Centro Studi di Banca e Finanza (CEFIN) (Center for Studies in Banking and Finance) 08013, Universita di Modena e Reggio Emilia, Facoltà di Economia "Marco Biagi". [Downloadable!]
  2. Menno Middeldorp & Stephanie Rosenkranz, 2008. "Information acquisition in an experimental asset market," Working Papers 08-25, Utrecht School of Economics. [Downloadable!]
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