We compare the Calvo and Rotemberg price-setting mechanisms in a New Keynesian model with trend inflation. We show that: the long-run relationship between inflation and output is positive in Rotemberg and negative in Calvo; the dynamics of the two models differ even to a first-order approximation; positive trend inflation enlarges the determinacy region in the Rotemberg model, whereas it shrinks it in the Calvo model; the responses of output and inflation to technology shocks are amplified by trend inflation in Calvo, whereas they are dampened in Rotemberg; the two models imply differing non-linear adjustments after a disinflation.

Trend Inflation and Firms Price-Setting: Rotemberg vs. Calvo

ASCARI, GUIDO;ROSSI, LORENZA
2012-01-01

Abstract

We compare the Calvo and Rotemberg price-setting mechanisms in a New Keynesian model with trend inflation. We show that: the long-run relationship between inflation and output is positive in Rotemberg and negative in Calvo; the dynamics of the two models differ even to a first-order approximation; positive trend inflation enlarges the determinacy region in the Rotemberg model, whereas it shrinks it in the Calvo model; the responses of output and inflation to technology shocks are amplified by trend inflation in Calvo, whereas they are dampened in Rotemberg; the two models imply differing non-linear adjustments after a disinflation.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/319112
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