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VECM estimations of the PPP reversion rate revisited: The conventional role of relative price adjustment restored

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  • Kim, Hyeongwoo

Abstract

Cheung et al. (2004) use a vector error correction model (VECM) for the current float nominal exchange rate and relative price data and claim that the sluggish purchasing power parity (PPP) reversion is primarily driven by the nominal exchange rate, not by relative price adjustment, which is at odds with the conventional sticky-price models. Our major findings are as follows. First, we suggest cases where VECMs are of limited usefulness, even when all the variables in the system are not weakly exogenous. Second, using century-long exchange rates, we find that the relative price plays an important role for PPP reversion when real shocks occur. Third, protracted hump-shaped responses of real exchange rates are frequently observed when there is a relative price shock, leading to sluggish adjustments toward PPP. Nominal exchange rate shocks generate humped dynamics much less frequently.

Suggested Citation

  • Kim, Hyeongwoo, 2012. "VECM estimations of the PPP reversion rate revisited: The conventional role of relative price adjustment restored," Journal of Macroeconomics, Elsevier, vol. 34(1), pages 223-238.
  • Handle: RePEc:eee:jmacro:v:34:y:2012:i:1:p:223-238 DOI: 10.1016/j.jmacro.2011.10.004
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    Cited by:

    1. Bergin, Paul R. & Glick, Reuven & Wu, Jyh-Lin, 2014. "Mussa redux and conditional PPP," Journal of Monetary Economics, Elsevier, vol. 68(C), pages 101-114.
    2. Woo, Kai-Yin & Lee, Shu-Kam & Chan, Alan, 2014. "Non-linear adjustments to intranational PPP," Journal of Macroeconomics, Elsevier, pages 360-371.

    More about this item

    Keywords

    Purchasing power parity; Convergence rate; Half-life; Up-life; Quarter-life; Hump-shaped response; Variance decomposition;

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • F31 - International Economics - - International Finance - - - Foreign Exchange

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