Comments on &amp;quot;Trend Inflation, Indexation, and Inflation Persistence in the New Keynesian Phillips Curve&amp;quot
Fabià Gumbau-Brisa and
Denny Lie ()
No 2015-13, Working Papers from University of Sydney, School of Economics
This comment reexamines the finding in Cogley and Sbordone (&amp;quot;Trend Inflation, Indexation,and Inflation Persistence in the New Keynesian Phillips Curve,&amp;quot; American Economic Review98(5): 2101-26, 2008) that the New Keynesian Phillips curve is purely forward-looking once time-varying trend inflation is accounted for. We perform various types of robustness analysis involving the second-stage estimation procedure, the number of indexation lags, and the vantage point of expectations. All in all, our estimates show that the main result in Cogley and Sbordone is not robust to these seemingly innocuous modifications.
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