The global component of inflation volatility
Francesco Corsello () and
No 1170, Temi di discussione (Economic working papers) from Bank of Italy, Economic Research and International Relations Area
Global developments play an important role in domestic inflation rates. Previous literature has found that a substantial amount of the variation in a large set of national inflation rates can be explained by a single global factor. However, inflation volatility has been typically neglected, while it is clearly relevant both from a policy point of view and for structural analysis and forecasting purposes. We study the evolution of inflation rates in several countries, using a novel model that allows for commonality in both levels and volatilities, in addition to country-specific components. We find that inflation stochastic volatility is indeed important, and a substantial share of it can be attributed to a global factor that also drives the levels and persistence of inflation. While various phenomena may contribute to global inflation dynamics, it turns out that since the early 1990s, the estimated global factor is correlated with China’s PPI and with oil inflation levels and volatilities. The extent of commonality among core inflation rates and volatilities is substantially smaller than for overall inflation, which leaves scope for national monetary policies.
Keywords: inflation; volatility; global factors; large datasets; multivariate autoregressive index models; reduced rank regressions; forecasting (search for similar items in EconPapers)
JEL-codes: E31 F62 C32 E37 C53 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-cba, nep-cna, nep-mac and nep-mon
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Working Paper: The Global Component of Inflation Volatility (2019)
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Persistent link: https://EconPapers.repec.org/RePEc:bdi:wptemi:td_1170_18
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