We empirically investigate the effects of inflation uncertainty on
output growth for the US using both monthly and quarterly data over
1985-2009. Employing a Markov regime switching approach to model
output dynamics, we show that inflation uncertainty obtained from a
Markov regime switching GARCH model exerts a negative and regime
dependant impact on output growth. In particular, we show that the
negative impact of inflation uncertainty on output growth is almost
4.5 times higher during the low growth regime than that during the
high growth regime. We verify the robustness of our findings using
quarterly data
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