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Some methodological comments on 'Sources of fluctuations in exchange rates: a structural VAR analysis' by N. Apergis and C. Karfakis

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  • Haluk Erlat
  • Guzin Erlat

Abstract

In this comment we note that the methodology used by Apergis and Karfakis (1996) (a) leads to restricting the contemporaneous impact matrix not the long-run impact matrix in identifying their SVAR model, contrary to to their stated objective, and (b) that the Bernanke-Sims procedure of identification and the conventional Cholesky-decomposition based analysis of a VAR lead exactly to the same results as long as the impact matrix is restricted to be lower triangle.

Suggested Citation

  • Haluk Erlat & Guzin Erlat, 1998. "Some methodological comments on 'Sources of fluctuations in exchange rates: a structural VAR analysis' by N. Apergis and C. Karfakis," Applied Economics Letters, Taylor & Francis Journals, vol. 5(4), pages 269-270.
    • Handle: RePEc:taf:apeclt:v:5:y:1998:i:4:p:269-270
    DOI: 10.1080/135048598354960
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    1. Bernanke, Ben S., 1986. "Alternative explanations of the money-income correlation," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 25(1), pages 49-99, January.
    2. Lastrapes, William D, 1992. "Sources of Fluctuations in Real and Nominal Exchange Rates," The Review of Economics and Statistics, MIT Press, vol. 74(3), pages 530-539, August.
    3. Sims, Christopher A, 1980. "Macroeconomics and Reality," Econometrica, Econometric Society, vol. 48(1), pages 1-48, January.
    4. Nicos Apergis & Costas Karfakis, 1996. "Sources of fluctuations in exchange rates: a structural VAR analysis," Applied Economics Letters, Taylor & Francis Journals, vol. 3(4), pages 251-254.
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