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Determinacy and Identification with Taylor Rules

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  • John H. Cochrane
Abstract
The new-Keynesian, Taylor-rule theory of inflation determination relies on explosive dynamics. By raising interest rates in response to inflation, the Fed induces ever-larger inflation or deflation, unless inflation jumps to one particular value on each date. However, economics does not rule out inflationary or deflationary equilibria. Attempts to fix this problem assume that people believe the government will choose to blow up the economy if alternative equilibria emerge, by following policies we usually consider impossible. Therefore, inflation is just as indeterminate under "active" interest rate targets as it is under fixed interest rate targets. If one accepts the new-Keynesian solution, the parameters of the Taylor rule relating interest rates to inflation and other variables are not identified without unrealistic assumptions. Thus, Taylor rule regressions cannot be used to argue that the Fed conquered inflation by moving from a "passive" to an "active" policy in the early 1980s.

Suggested Citation

  • John H. Cochrane, 2007. "Determinacy and Identification with Taylor Rules," NBER Working Papers 13410, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:13410
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    More about this item

    JEL classification:

    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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