Changes in the effects of monetary policy on disaggregate price dynamics
نویسندگان
چکیده
Based on a time-varying factor-augmented vector autoregression, we demonstrate that the propagation mechanism of monetary policy disturbances differs across disaggregate components of personal consumption expenditures. While many disaggregate prices rise temporarily in response to a monetary tightening in the early part of the sample, there is no evidence of a price puzzle at the aggregate level. The share of disaggregate prices that exhibit the price puzzle diminishes from the early 1980s onwards. There also is evidence of a substantial decline in the dispersion of disaggregate price responses over time. This gradual decrease in cross-sectional heterogeneity of disaggregate price responses is associated with a dampening effect on aggregate real economic activity and a stronger effect on the aggregate price level. We illustrate by means of a multisector sticky-price model augmented by a cost channel how key structural parameters would have had to change to match this evolution of sectoral price dynamics. Crown Copyright & 2012 Published by Elsevier B.V. All rights reserved.
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