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Unconventional Policy Instruments in the New Keynesian Model

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  • Zineddine Alla
  • Raphael A Espinoza
  • Atish R. Ghosh

Abstract

This paper analyzes the use of unconventional policy instruments in New Keynesian setups in which the ‘divine coincidence’ breaks down. The paper discusses the role of a second instrument and its coordination with conventional interest rate policy, and presents theoretical results on equilibrium determinacy, the inflation bias, the stabilization bias, and the optimal central banker’s preferences when both instruments are available. We show that the use of an unconventional instrument can help reduce the zone of equilibrium indeterminacy and the volatility of the economy. However, in some circumstances, committing not to use the second instrument may be welfare improving (a result akin to Rogoff (1985a) example of counterproductive coordination). We further show that the optimal central banker should be both aggressive against inflation, and interventionist in using the unconventional policy instrument. As long as price setting depends on expectations about the future, there are gains from establishing credibility by using any instrument that affects these expectations.

Suggested Citation

  • Zineddine Alla & Raphael A Espinoza & Atish R. Ghosh, 2016. "Unconventional Policy Instruments in the New Keynesian Model," IMF Working Papers 16/58, International Monetary Fund.
  • Handle: RePEc:imf:imfwpa:16/58
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    References listed on IDEAS

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    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. Olivier Blanchard & Jordi Galí, 2007. "Real Wage Rigidities and the New Keynesian Model," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(s1), pages 35-65, February.
    5. Cúrdia, Vasco & Woodford, Michael, 2011. "The central-bank balance sheet as an instrument of monetarypolicy," Journal of Monetary Economics, Elsevier, vol. 58(1), pages 54-79, January.
    6. Taylor, John B, 1979. "Estimation and Control of a Macroeconomic Model with Rational Expectations," Econometrica, Econometric Society, vol. 47(5), pages 1267-1286, September.
    7. Vasco Curdia & Michael Woodford, 2010. "Credit Spreads and Monetary Policy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 42(s1), pages 3-35, September.
    8. Emmanuel Farhi & Iván Werning, 2014. "Dilemma Not Trilemma? Capital Controls and Exchange Rates with Volatile Capital Flows," IMF Economic Review, Palgrave Macmillan;International Monetary Fund, vol. 62(4), pages 569-605, November.
    9. King, Mervyn, 1997. "Changes in UK monetary policy: Rules and discretion in practice," Journal of Monetary Economics, Elsevier, vol. 39(1), pages 81-97, June.
    10. 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.
    11. Lars E.O. Svensson, 2014. "Inflation Targeting and "Leaning against the Wind"," International Journal of Central Banking, International Journal of Central Banking, vol. 10(2), pages 103-114, June.
    12. 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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    Cited by:

    1. Zineddine Alla, 2017. "Optimal policies in International Macroeconomics," Sciences Po publications info:hdl:2441/6kvjk9o32n8, Sciences Po.

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