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A Model of Near-Rational Exuberance

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  • James Bullard

    ()

  • George W. Evans

    ()

  • Seppo Honkapohja

    ()

Abstract

We study how the use of judgement or “add-factors?in forecasting may disturb the set of equilibrium outcomes when agents learn using recursive methods. We isolate conditions under which new phenomena, which we call exuberance equilibria, can exist in a standard self-referential environment. Local indeterminacy is not a requirement for existence. We construct a simple asset pricing example and find that exuberance equilibria, when they exist, can be extremely volatile relative to fundamental equilibria. learning, recurrent hyperinflations, and macroeconomic policy to combat liquidity traps and deflation.

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File URL: http://www.st-andrews.ac.uk/economics/CDMA/papers/wp0902.pdf
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Bibliographic Info

Paper provided by Centre for Dynamic Macroeconomic Analysis in its series CDMA Working Paper Series with number 200902.

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Date of creation: 15 Feb 2009
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Handle: RePEc:san:cdmawp:0902

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Keywords: Learning; expectations; excess volatility; bounded rationality.;

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  1. Lars E.O. Svensson, 2002. "What Is Wrong with Taylor Rules? Using Judgment in Monetary Policy through Targeting Rules," Working Papers 118, Princeton University, Department of Economics, Center for Economic Policy Studies..
  2. Laurence Ball, 2000. "Near-Rationality and Inflation in Two Monetary Regimes," NBER Working Papers 7988, National Bureau of Economic Research, Inc.
  3. Brock, William A. & Hommes, Cars H., 1998. "Heterogeneous beliefs and routes to chaos in a simple asset pricing model," Journal of Economic Dynamics and Control, Elsevier, vol. 22(8-9), pages 1235-1274, August.
  4. Sargent, Thomas J., 1991. "Equilibrium with signal extraction from endogenous variables," Journal of Economic Dynamics and Control, Elsevier, vol. 15(2), pages 245-273, April.
  5. Ottaviani, Marco & Sorensen, Peter Norman, 2006. "The strategy of professional forecasting," Journal of Financial Economics, Elsevier, vol. 81(2), pages 441-466, August.
  6. Svensson, Lars O & Tetlow, Robert J, 2005. "Optimal Policy Projections," MPRA Paper 839, University Library of Munich, Germany.
  7. Svensson, Lars E O, 2005. "Monetary Policy with Judgement: Forecast Targeting," CEPR Discussion Papers 5072, C.E.P.R. Discussion Papers.
  8. Branch, William A. & McGough, Bruce, 2005. "Consistent expectations and misspecification in stochastic non-linear economies," Journal of Economic Dynamics and Control, Elsevier, vol. 29(4), pages 659-676, April.
  9. Thomas Sargent & Noah Williams & Tao Zha, 2006. "The conquest of South American inflation," Working Paper 2006-20, Federal Reserve Bank of Atlanta.
  10. Albert Marcet & Thomas J. Sargent, 1992. "Speed of convergence of recursive least squares learning with ARMA perceptions," Economics Working Papers 15, Department of Economics and Business, Universitat Pompeu Fabra.
  11. Shiller, Robert J, 1981. "Do Stock Prices Move Too Much to be Justified by Subsequent Changes in Dividends?," American Economic Review, American Economic Association, vol. 71(3), pages 421-36, June.
  12. Roger Lagunoff & Stacey L. Schreft, 1999. "Financial Fragility with Rational and Irrational Exuberance," Macroeconomics 9904011, EconWPA.
  13. George W. Evans & Seppo Honkapohja, . "Economic Dynamics with Learning: New Stability Results," Computing in Economics and Finance 1997 51, Society for Computational Economics.
  14. Evans, George W. & Honkapohja, Seppo, 1999. "Learning dynamics," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 7, pages 449-542 Elsevier.
  15. Reifschneider, David L. & Stockton, David J. & Wilcox, David W., 1997. "Econometric models and the monetary policy process," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 47(1), pages 1-37, December.
  16. Ricardo J. Caballero, 1992. "Near-Rationality, Heterogeneity and Aggregate Consumption," NBER Working Papers 4035, National Bureau of Economic Research, Inc.
  17. Akerlof, George A & Yellen, Janet L, 1985. "A Near-rational Model of the Business Cycle, with Wage and Price Intertia," The Quarterly Journal of Economics, MIT Press, vol. 100(5), pages 823-38, Supp..
  18. Evans, George W. & Honkapohja, Seppo & Honkapohja, Seppo, 1994. "Learning, convergence, and stability with multiple rational expectations equilibria," European Economic Review, Elsevier, vol. 38(5), pages 1071-1098, May.
  19. Hommes, Cars & Sorger, Gerhard, 1998. "Consistent Expectations Equilibria," Macroeconomic Dynamics, Cambridge University Press, vol. 2(03), pages 287-321, September.
  20. Benhabib, Jess & Farmer, Roger E.A., 1999. "Indeterminacy and sunspots in macroeconomics," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 6, pages 387-448 Elsevier.
  21. repec:cup:macdyn:v:2:y:1998:i:3:p:287-321 is not listed on IDEAS
  22. James Bullard & George W. Evans & Seppo Honkapohja, 2008. "Monetary Policy, Judgment, and Near-Rational Exuberance," American Economic Review, American Economic Association, vol. 98(3), pages 1163-77, June.
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Cited by:
  1. Roger E.A. Farmer & Carine Nourry & Alain Venditti, 2012. "The Inefficient Markets Hypothesis: Why Financial Markets Do Not Work Well in the Real World," NBER Working Papers 18647, National Bureau of Economic Research, Inc.
  2. Hommes, C.H. & Zhu, M., 2012. "Behavioral Learning Equilibria," CeNDEF Working Papers 12-09, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.
  3. Hellwig, Christian & Veldkamp, Laura, 2007. "Knowing What Others Know: Coordination Motives in Information Acquisition," CEPR Discussion Papers 6506, C.E.P.R. Discussion Papers.
  4. Cars Hommes & Mei Zhu, 2013. "Behavioral Learning Equilibria," Tinbergen Institute Discussion Papers 13-014/II, Tinbergen Institute.
  5. Murray, James, 2011. "Learning and judgment shocks in U.S. business cycles," MPRA Paper 29257, University Library of Munich, Germany.
  6. Volha Audzei, 2012. "Efficiency of Central Bank Policy During the Crisis : Role of Expectations in Reinforcing Hoarding Behavior," CERGE-EI Working Papers wp477, The Center for Economic Research and Graduate Education - Economic Institute, Prague.
  7. Georges, Christophre, 2008. "Staggered updating in an artificial financial market," Journal of Economic Dynamics and Control, Elsevier, vol. 32(9), pages 2809-2825, September.
  8. Gaballo, G., 2012. "Good Luck or Good Policy? An Expectational Theory of Macro-Volatility Switches," Working papers 402, Banque de France.

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