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Monetary policy and inflation dynamics

  • John M. Roberts

Since the early 1980s, the United States economy has changed in some important ways: Inflation now rises considerably less when unemployment falls and the volatility of output and inflation have fallen sharply. This paper examines whether changes in monetary policy can account for these phenomena. The results suggest that changes in the parameters and shock volatility of monetary policy reaction functions can account for most or all of the change in the inflation-unemployment relationship. As in other work, monetary-policy changes can explain only a small portion of the output growth volatility decline. However, changes in policy can explain a large proportion of the reduction in the volatility of the output gap. In addition, a broader concept of monetary-policy changes--one that includes improvements in the central bank's ability to measure potential output--enhances the ability of monetary policy to account for the changes in the economy.

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Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series Finance and Economics Discussion Series with number 2004-62.

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Date of creation: 2004
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Handle: RePEc:fip:fedgfe:2004-62
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