Department of Economics. University of Melbourne. Parkville Victoria
3052 Australia
ABSTRACT
The Fisher equation predicts that nominal interest rates and inflation
should move together one-for-one. Recently published work argues that both
nominal interest rates and inflation are non-linear. The evidence in this
paper suggests that nominal interest rates are well described as two-regime
threshold unit root processes. However, inflation and real interest rates
appear to be stationary threshold processes. This is consistent with a
threshold processes. This is consistent with a threshold cointegrating
relationship between nominal interest rates and inflation. The long run
Fisher equation describes the relationship between real interest rate inflation
in periods of high inflation. In the low inflation regime shocks to real
interest rates are highly persistent.
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