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Optimal monetary policy with imperfect common knowledge

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Author Info
Klaus Adam () (European Central Bank, Postfach 160319, 60311 Frankfurt am Main, Germany.)

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Abstract

We study optimal nominal demand policy in an economy with monopolistic competition and flexible prices when firms have imperfect common knowledge about the shocks hitting the economy. Information imperfections emerge endogenously because firms are assumed to have finite (Shannon) capacity to process information. We then ask how policy that minimizes a quadratic objective in output and prices depends on firms' processing capacity. When price setting decisions are strategic complements, for a large range of capacity values optimal policy nominally accommodates mark-up shocks in the short-run. This holds even if the policy maker observes shocks imperfectly or is uncertain about firms' capacity parameter. With persistent mark-up shocks accommodation may increase in the medium term, but decreases in the long-run thereby generating a hump-shaped price response and a slow reduction in output. JEL Classification: E31; E52; D82.

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Paper provided by European Central Bank in its series Working Paper Series with number 223.

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Length: 38 pages
Date of creation: Apr 2003
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Handle: RePEc:ecb:ecbwps:20030223

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Related research
Keywords: Optimal policy information frictions imperfect common knowledge higher order beliefs Shannon capacity.

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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.:
  1. Michael Woodford, 2001. "Inflation Stabilization and Welfare," NBER Working Papers 8071, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  2. Atsushi Kajii & Stephen Morris, 1997. "The Robustness of Equilibria to Incomplete Information," Econometrica, Econometric Society, vol. 65(6), pages 1283-1310, November.
    Other versions:
  3. Jeffery Amato & Hyun Song Shin, 2003. "Public and Private Information in Monetary Policy Models," Levine's Bibliography 666156000000000092, UCLA Department of Economics. [Downloadable!]
  4. Stephen Morris & Hyun S Shin, 2001. "Global Games: Theory and Applications," Levine's Working Paper Archive 122247000000001080, UCLA Department of Economics. [Downloadable!]
    Other versions:
  5. Bacchetta, Philippe & van Wincoop, Eric, 2003. "Can Information Heterogeneity Explain the Exchange Rate Determination Puzzle?," CEPR Discussion Papers 3808, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
  6. Hyun Song Shin & Jeffery D. Amato, 2003. "Public and private information in monetary policy models," BIS Working Papers 138, Bank for International Settlements. [Downloadable!]
  7. Laurence Ball & N Gregory Mankiw & Ricardo Reis, 2003. "Monetary Policy for Inattentive Economies," Economics Working Paper Archive 491, The Johns Hopkins University,Department of Economics. [Downloadable!]
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  8. Sims, Christopher A., 2003. "Implications of rational inattention," Journal of Monetary Economics, Elsevier, vol. 50(3), pages 665-690, April. [Downloadable!] (restricted)
  9. 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. [Downloadable!] (restricted)
  10. Svensson, Lars E. O. & Woodford, Michael, 2004. "Indicator variables for optimal policy under asymmetric information," Journal of Economic Dynamics and Control, Elsevier, vol. 28(4), pages 661-690, January. [Downloadable!] (restricted)
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  11. Lucas, Robert Jr., 1972. "Expectations and the neutrality of money," Journal of Economic Theory, Elsevier, vol. 4(2), pages 103-124, April. [Downloadable!] (restricted)
  12. Kenneth Kasa, 2000. "Forecasting the Forecasts of Others in the Frequency Domain," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 3(4), pages 726-756, October. [Downloadable!] (restricted)
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  13. Christian Hellwig, 2002. "Public Announcements, Adjustment Delays, and the Business Cycle (November 2002)," UCLA Economics Online Papers 208, UCLA Department of Economics. [Downloadable!]
  14. Binder, Michael & Pesaran, M Hashem, 1998. "Decision Making in the Presence of Heterogeneous Information and Social Interactions," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 39(4), pages 1027-52, November.
    Other versions:
  15. Hyun Song Shin & Jeffery D. Amato, 2003. "Public and Private Information in Monetary Policy Models," Computing in Economics and Finance 2003 38, Society for Computational Economics. [Downloadable!]
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Cited by:
(explanations, 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. Baeriswyl, Romain & Cornand, Camille, 2007. "Can Opacity of a Credible Central Bank Explain Excessive Inflation?," Discussion Papers in Economics 1376, University of Munich, Department of Economics. [Downloadable!]
  2. Mackowiak, Bartosz Adam & Wiederholt, Mirko, 2007. "Optimal Sticky Prices under Rational Inattention," CEPR Discussion Papers 6243, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
  3. Pengfei Wang & Yi Wen, 2007. "Incomplete information and self-fulfilling prophecies," Working Papers 2007-033, Federal Reserve Bank of St. Louis. [Downloadable!]
  4. Sophocles N. Brissimis & Nicholas S. Magginas, 2008. "Inflation Forecasts and the New Keynesian Phillips Curve," International Journal of Central Banking, International Journal of Central Banking, vol. 4(2), pages 1-22, June. [Downloadable!]
    Other versions:
  5. Ernst Fehr & Jean-Robert Tyran, . "Expectations and the Effects of Money Illusion," DNB Staff Reports (discontinued) 115, Netherlands Central Bank. [Downloadable!]
  6. Hyun Song Shin & Jeffery D. Amato, 2003. "Public and Private Information in Monetary Policy Models," Computing in Economics and Finance 2003 38, Society for Computational Economics. [Downloadable!]
  7. Jeffery Amato & Hyun Song Shin, 2003. "Public and Private Information in Monetary Policy Models," Levine's Bibliography 666156000000000092, UCLA Department of Economics. [Downloadable!]
  8. Jeffery D. Amato & Hyun Song Shin, . "Public and Private Information in Monetary Policy Models," DNB Staff Reports (discontinued) 117, Netherlands Central Bank. [Downloadable!]
  9. Otmar Issing, 2005. "Communication, transparency, accountability: monetary policy in the twenty-first century," Review, Federal Reserve Bank of St. Louis, issue Mar, pages 65-83. [Downloadable!]
  10. Guido Lorenzoni, 2007. "News Shocks and Optimal Monetary Policy," NBER Working Papers 12898, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  11. Paloviita , Maritta, 2005. "Comparing alternative Phillips curve specifications: European results with survey-based expectations," Research Discussion Papers 22/2005, Bank of Finland. [Downloadable!]
  12. Baeriswyl, Romain, 2007. "Central Bank's Action and Communication," Discussion Papers in Economics 1381, University of Munich, Department of Economics. [Downloadable!]
  13. Paloviita, Maritta, 2007. "Estimating a small DSGE model under rational and measured expectations: some comparisons," Research Discussion Papers 14/2007, Bank of Finland. [Downloadable!]
  14. Levy, Daniel & Lee, Dongwon & Chen, Allan (Haipeng) & Kauffman, Robert & Bergen, Mark, 2007. "Price Points and Price Rigidity," MPRA Paper 1472, University Library of Munich, Germany. [Downloadable!]
    Other versions:
  15. Fabià Gumbau-Brisa, 2005. "Heterogeneous beliefs and inflation dynamics: a general equilibrium approach," Working Papers 05-16, Federal Reserve Bank of Boston. [Downloadable!]
  16. Kristoffer P. Nimark, 2005. "Calvo pricing and imperfect common knowledge - a forward looking model of rational inflation inertia," Working Paper Series 474, European Central Bank. [Downloadable!]
  17. Romain Baeriswyl & Camille Cornand, 2007. "Monetary policy and its informative value," Proceedings, Federal Reserve Bank of San Francisco. [Downloadable!]
  18. Michael Ehrmann, 2006. "Rational inattention, inflation developments and perceptions after the euro cash changeover," Working Paper Series 588, European Central Bank. [Downloadable!]
  19. Guido Lorenzoni, 2006. "A Theory of Demand Shocks," NBER Working Papers 12477, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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