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Imprecision of Central Bank Announcements and Credibility


  • Daniel Laskar

    () (PSE - Paris School of Economics, PSE - Paris-Jourdan Sciences Economiques - ENS Paris - École normale supérieure - Paris - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique)


We consider a model where the central bank faces a credibility problem in its announcements, but also cares about its credibility and, therefore, wants to make truthful announcements. We show that, although the central bank would be able to perfectly transmit its information to the private sector through precise announcements, the central bank may nonetheless prefer to make imprecise announcements. This choice of the central bank would be suboptimal from the point of view of society. However, if the central bank gives enough weight to making truthful announcements, this suboptimality disappears, because the central bank would then prefer precise announcements to imprecise announcements.

Suggested Citation

  • Daniel Laskar, 2010. "Imprecision of Central Bank Announcements and Credibility," PSE Working Papers halshs-00562595, HAL.
  • Handle: RePEc:hal:psewpa:halshs-00562595
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    References listed on IDEAS

    1. Barro, Robert J & Gordon, David B, 1983. "A Positive Theory of Monetary Policy in a Natural Rate Model," Journal of Political Economy, University of Chicago Press, vol. 91(4), pages 589-610, August.
    2. Alan S. Blinder & Michael Ehrmann & Marcel Fratzscher & Jakob De Haan & David-Jan Jansen, 2008. "Central Bank Communication and Monetary Policy: A Survey of Theory and Evidence," Journal of Economic Literature, American Economic Association, vol. 46(4), pages 910-945, December.
    3. Mark Gertler & Jordi Gali & Richard Clarida, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," Journal of Economic Literature, American Economic Association, vol. 37(4), pages 1661-1707, December.
    4. Alan S. Blinder, 2000. "Central-Bank Credibility: Why Do We Care? How Do We Build It?," American Economic Review, American Economic Association, vol. 90(5), pages 1421-1431, December.
    5. van der Cruijsen, C.A.B. & Eijffinger, S.C.W., 2007. "The Economic Impact of Central Bank Transparency : A Survey," Discussion Paper 2007-06, Tilburg University, Center for Economic Research.
    6. Hans Gersbach & Volker Hahn, 2008. "Forward Guidance for Monetary Policy: Is It Desirable?," CER-ETH Economics working paper series 08/84, CER-ETH - Center of Economic Research (CER-ETH) at ETH Zurich.
    7. Vickers, John, 1986. "Signalling in a Model of Monetary Policy with Incomplete Information," Oxford Economic Papers, Oxford University Press, vol. 38(3), pages 443-455, November.
    8. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-1451, November.
    9. Stein, Jeremy C, 1989. "Cheap Talk and the Fed: A Theory of Imprecise Policy Announcements," American Economic Review, American Economic Association, vol. 79(1), pages 32-42, March.
    10. Kydland, Finn E & Prescott, Edward C, 1977. "Rules Rather Than Discretion: The Inconsistency of Optimal Plans," Journal of Political Economy, University of Chicago Press, vol. 85(3), pages 473-491, June.
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