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The Real Exchange Rate and Real Interest Differentials: The Role of the Trend-Cycle Decomposition

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  • Wada, Tatsuma

Abstract

We propose an alternative model and method to reconcile the puzzling feature in the relationship between the real exchange rate and real interest rate differentials. Our simple two-country model with preset prices, along with firms’ misperception about the future exchange rate, implies that the real exchange rate follows an ARIMA(0,1,p) process. This allows us to compute the exact Beveridge-Nelson decomposition, which is a model-consistent decomposition. In accordance with our model, unit roots in the real exchange rates are found; and statistical inference is partially found to be affirmative regarding the link between the real exchange rate detrended by the Beveridge-Nelson decomposition and corresponding real interest differentials.

Suggested Citation

  • Wada, Tatsuma, 2011. "The Real Exchange Rate and Real Interest Differentials: The Role of the Trend-Cycle Decomposition," MPRA Paper 41755, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:41755
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    References listed on IDEAS

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    1. Asea, Patrick K & Reinhart, Carmen M, 1996. "Economic Growth and Economic Consequences of External Shocks in Sub-Saharan Africa: Introduction," Journal of African Economies, Centre for the Study of African Economies, vol. 5(3), pages 1-6, October.
    2. Beveridge, Stephen & Nelson, Charles R., 1981. "A new approach to decomposition of economic time series into permanent and transitory components with particular attention to measurement of the `business cycle'," Journal of Monetary Economics, Elsevier, vol. 7(2), pages 151-174.
    3. Morley, James C., 2002. "A state-space approach to calculating the Beveridge-Nelson decomposition," Economics Letters, Elsevier, vol. 75(1), pages 123-127, March.
    4. Nakagawa, Hironobu, 2002. "Real exchange rates and real interest differentials: implications of nonlinear adjustment in real exchange rates," Journal of Monetary Economics, Elsevier, vol. 49(3), pages 629-649, April.
    5. Devereux, Michael B. & Engel, Charles, 2002. "Exchange rate pass-through, exchange rate volatility, and exchange rate disconnect," Journal of Monetary Economics, Elsevier, vol. 49(5), pages 913-940, July.
    6. Baxter, Marianne, 1994. "Real exchange rates and real interest differentials: Have we missed the business-cycle relationship?," Journal of Monetary Economics, Elsevier, vol. 33(1), pages 5-37, February.
    7. Nelson C. Mark & Young-Kyu Moh, 2005. "The real exchange rate and real interest differentials: the role of nonlinearities," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 10(4), pages 323-335.
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    Cited by:

    1. Works, Richard Floyd, 2016. "Econometric modeling of exchange rate determinants by market classification: An empirical analysis of Japan and South Korea using the sticky-price monetary theory," MPRA Paper 76382, University Library of Munich, Germany.
    2. Wada, Tatsuma, 2022. "Out-of-sample forecasting of foreign exchange rates: The band spectral regression and LASSO," Journal of International Money and Finance, Elsevier, vol. 128(C).

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    More about this item

    Keywords

    Trend-Cycle Decomposition; Real Interest Parity; Sticky Price Model; Beveridge-Nelson Decomposition;
    All these keywords.

    JEL classification:

    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
    • F31 - International Economics - - International Finance - - - Foreign Exchange

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