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Are State- and Time-Dependent Models Really Different?
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DOI：10.1086/690243.png)
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Abstract
En 中文
Yes, state- and time-dependent models are really different, but only for large monetary shocks. In particular, we show that in a broad class of models where shocks have continuous paths, the propagation of a monetary impulse is independent of the nature of the sticky price friction when shocks are small. The propagation of large shocks instead depends on the nature of the friction: the impulse response of inflation to monetary shocks is independent of the shock size in time-dependent models, while it is nonlinear in state-dependent models. We use data on exchange rate devaluations and inflation for a panel of countries from 1974 to 2014 to test for the presence of state-dependent decision rules. We present some evidence of a nonlinear effect of exchange rate changes on prices in a sample of flexible exchange rate countries with low inflation. We discuss the dimensions in which this finding is robust and the ones in which it is not.
Keywords:
MENU COSTS
MONETARY NONNEUTRALITY
OPTIMAL INATTENTION
MULTIPRODUCT FIRMS
PASS-THROUGH
INFLATION
DYNAMICS
PRICES
SHOCKS
INFORMATION
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10.7
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238
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