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The monetary instrument matters

  • William T. Gavin
  • Benjamin D. Keen
  • Michael R. Pakko

This paper revisits the debate over the money supply versus the interest rate as the instrument of monetary policy. Using a dynamic stochastic general equilibrium framework, the authors examine the effects of alternative monetary policy rules on inflation persistence, the information content of monetary data, and real variables. They show that inflation persistence and the variability of inflation relative to money growth depend on whether the central bank follows a money growth rule or an interest rate rule. With a money growth rule, inflation is not persistent and the price level is much more volatile than the money supply. Those counterfactual implications are eliminated by the use of interest rate rules whether prices are sticky or not. A central bank's use of interest rate rules, however, obscures the information content of monetary aggregates and also leads to subtle problems for econometricians trying to estimate money demand functions or to identify shocks to the trend and cycle components of the money stock.

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Article provided by Federal Reserve Bank of St. Louis in its journal Review.

Volume (Year): (2005)
Issue (Month): Sep ()
Pages: 633-658

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Handle: RePEc:fip:fedlrv:y:2005:i:sep:p:633-658:n:v.87no.5
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