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Convergence of Prices and Rates of Inflation

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Author Info
Fabio Busetti
Silvia Fabiani
Andrew Harvey

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Abstract

We consider how unit-root and stationarity tests can be used to study the convergence of prices and rates of inflation. We show how the joint use of these tests in levels and first differences allows the researcher to distinguish between series that are converging and series that have already converged, and we set out a strategy to establish whether convergence occurs in relative prices or just in rates of inflation. Special attention is paid to the issue of whether a mean should be extracted in carrying out tests in first differences and whether there is an advantage to adopting a (Dickey-Fuller) unit-root test based on deviations from the last observation. The asymptotic distribution of this last test statistic is given and Monte Carlo simulation experiments show that the test yields considerable power gains for highly persistent autoregressive processes with 'relatively large' initial conditions. The tests are applied to the monthly series of the consumer price index in the Italian regional capitals over the period 1970-2003. Copyright 2006 Blackwell Publishing Ltd.

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File URL: http://www.blackwell-synergy.com/doi/abs/10.1111/j.1468-0084.2006.00460.x
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Article provided by Department of Economics, University of Oxford in its journal Oxford Bulletin of Economics and Statistics.

Volume (Year): 68 (2006)
Issue (Month): s1 (December)
Pages: 863-877
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Handle: RePEc:bla:obuest:v:68:y:2006:i:s1:p:863-877

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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  5. Banerjee, Anindya, 1999. " Panel Data Unit Roots and Cointegration: An Overview," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 61(0), pages 607-29, Special I. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Elena Pesavento & Barbara Rossi, 2006. "Impulse Responses Confidence Intervals for Persistent Data: What Have We Learned?," Emory Economics 0603, Department of Economics, Emory University (Atlanta). [Downloadable!]
    Other versions:
  2. Christian Dreger & Reinhold Kosfeld, 2007. "Do Regional Price Levels Converge?: Paneleconometric Evidence Based on German Districts," Discussion Papers of DIW Berlin 754, DIW Berlin, German Institute for Economic Research. [Downloadable!]
  3. Carla Massidda & Paolo Mattana, 2008. "Regional productivity and relative prices dynamics: the case of Italy," The Annals of Regional Science, Springer, vol. 42(4), pages 945-966, December. [Downloadable!] (restricted)
  4. Yilmazkuday, Hakan, 2009. "Inflation Targeting and Inflation Convergence within Turkey," MPRA Paper 16770, University Library of Munich, Germany. [Downloadable!]
  5. Andrea Vaona & Guido Ascari, 2007. "Regional Inflation Persistence: Evidence from Italy," Quaderni della facoltà di Scienze economiche dell'Università di Lugano 0807, Biblioteca universitaria di Lugano (University Library of Lugano). [Downloadable!]
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