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The elusive welfare economics of price stability as a monetary policy objective: why New Keynesian central bankers should validate core inflation

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  • Buiter, Willem H.

Abstract

The paper studies the inflation rate associated with optimal monetary and fiscal policy in a number of standard dynamic stochastic general equilibrium models with nominal price rigidities. While the focus is on Calvo-style nominal price contracts with a range of indexation rules for constrained price setters, the conclusions have much wider validity: (1) Regardless of whether nominal price and/or wage rigidities are due to New-Keynesian, Old-Keynesian or sticky-information Phillips curves, optimal inflation policy requires the validation, that is, the full accommodation of core producer inflation by actual producer price inflation;(2) Optimal monetary policy implements Bailey-Friedman optimal quantity of money rule. No welfare-economics based argument for price stability as an objective (let alone the overriding objective) of monetary policy can be established for the class of DSGE models with nominal rigidities for which they have been proposed by Woodford and others. JEL Classification: E3, E4, E5, E6

Suggested Citation

  • Buiter, Willem H., 2006. "The elusive welfare economics of price stability as a monetary policy objective: why New Keynesian central bankers should validate core inflation," Working Paper Series 609, European Central Bank.
  • Handle: RePEc:ecb:ecbwps:2006609
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    2. Willem H. Buiter, 2007. "Is Numerairology the Future of Monetary Economics? Unbundling numeraire and medium of exchange through a virtual currency and a shadow exchange rate," NBER Working Papers 12839, National Bureau of Economic Research, Inc.
    3. Willem Buiter, 2007. "Is Numérairology the Future of Monetary Economics?," Open Economies Review, Springer, vol. 18(2), pages 127-156, April.

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    More about this item

    Keywords

    DSGE.; inflation targeting; New Keynesian macroeconomics; nominal price rigidities;
    All these keywords.

    JEL classification:

    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • E4 - Macroeconomics and Monetary Economics - - Money and Interest Rates
    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • E6 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook

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