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Monetary Policy Regime Change and Regional Inflation Dynamics: Looking through the Lens of Sector-Level Data for Korea

Author

Listed:
  • Chi-Young Choi

    (Economics Department, University of Texas at Arlington)

  • Joo Yong Lee

    (Economic Research Institute, The Bank of Korea)

  • Róisín O'Sullivan

    (Department of Economics, Smith College)

Abstract
This paper explores the impact of the adoption of inflation targeting (IT) on the dynamics of city-level inflation in Korea using both aggregate and sector-level data. When looking at aggregate regional inflation, we find that the mean, volatility and persistence fell in all cities in the wake of the monetary policy regime change, consistent with other evidence in the literature. We also note a narrowing of the dispersion of regional inflation across cities and a greater degree of regional co-movement. Delving more deeply into the disaggregate data reveals additional insights however. For most of the changes we observe in the dynamics of regional inflation, we find that the aggregate effects are being driven primarily by sectors that fall into the 'Services' category. We posit that the impact of better anchored inflationary expectations is primarily on the less-traded services sectors of the economy, where the domestic monetary policy framework has a relatively larger influence compared with globally-traded commodities. When it comes to the increased co-movement observed across regions under IT regime, however, it is the 'Commodities' sectors rather than 'Services' that are responsible, probably because services inflation becomes relatively more influenced by local factors once it has stabilized within the target range. We show that this sectoral heterogeneity can be explained by the difference in price stickiness such that sectors in which prices are adjusted less frequently tend to have a larger response under the new monetary policy regime.

Suggested Citation

  • Chi-Young Choi & Joo Yong Lee & Róisín O'Sullivan, 2015. "Monetary Policy Regime Change and Regional Inflation Dynamics: Looking through the Lens of Sector-Level Data for Korea," Working Papers 2015-20, Economic Research Institute, Bank of Korea.
    • Handle: RePEc:bok:wpaper:1520
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    References listed on IDEAS

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    More about this item

    Keywords

    Regional inflation; Inflation targeting (IT); Inflation dynamics; Heterogeneity; Korean cities; Disaggregate CPI;
    All these keywords.

    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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