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Assessment of Monetary Union in SADC: Evidence from Cointegration and Panel Unit Root Tests

Author

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  • Mulatu F. Zehirun

    (Department of Economics, Faculty of Economics and Finance, Tshwane University of Technology)

  • Marthinus C. Breitenbach

    (Department of Economics, University of Pretoria)

  • Francis M. Kemegue

    (Department of Economics, University of Pretoria)

Abstract

In this paper we investigate the likelihood of a proposed monetary union in the Southern African Development Community (SADC) being successful from the viewpoint of the Generalised Purchasing Power Parity (GPPP) hypothesis and optimum currency area (OCA) theory. We apply Johansen’s multivariate co-integration technique, panel unit root tests, Pedroni’s residual cointegration test and error correction based panel cointegration tests. The findings from this study confirm that GPPP holds among SADC member countries included in this study on account of cointegration and stationarity in real exchange rate series. The South African rand normalised long run beta coefficients of all the real exchange rates are below one except in the case of the Mauritian rupee and all bear negative signs except in the case of the Angolan New Kwanza and Mauritian rupee. This evidence support monetary union in the region except for Angola and Mauritius. However, the absolute magnitudes of the short run adjustment coefficients of SADC countries’ real exchange rates are low and bear positive signs in some cases. This finding implies that the observed slow speed of adjustment for the (log) real exchange rate of SADC member states might constrain the effectiveness of stabilization policies in the wake of external shocks, rendering SADC countries vulnerable to macroeconomic instability in the region. This result has important policy implications for the proposed monetary union in SADC.

Suggested Citation

  • Mulatu F. Zehirun & Marthinus C. Breitenbach & Francis M. Kemegue, 2015. "Assessment of Monetary Union in SADC: Evidence from Cointegration and Panel Unit Root Tests," Working Papers 201502, University of Pretoria, Department of Economics.
    • Handle: RePEc:pre:wpaper:201502
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    Cited by:

    1. Simplice Asongu & Oludele Folarin & Nicholas Biekpe, 2019. "The stability of demand for money in the proposed Southern African Monetary Union," International Journal of Emerging Markets, Emerald Group Publishing Limited, vol. 15(2), pages 222-244, August.
    2. Wörgötter, Andreas & Brixiova, Zuzana, 2020. "Monetary Unions of Small Currencies and a Dominating Member: What Policies Work Best for Benefiting from the CMA?," IZA Policy Papers 163, Institute of Labor Economics (IZA).
    3. Krzysztof Beck & Ntokozo Patrick Nzimande, 2023. "Labor mobility and business cycle synchronization in Southern Africa," Economic Change and Restructuring, Springer, vol. 56(1), pages 159-179, February.
    4. Samba Diop & Simplice A. Asongu, 2020. "An Index of African Monetary Integration (IAMI)," Working Papers 20/003, European Xtramile Centre of African Studies (EXCAS).
    5. Simplice Asongu & Jacinta Nwachukwu & Vanessa Tchamyou, 2017. "A Literature Survey On Proposed African Monetary Unions," Journal of Economic Surveys, Wiley Blackwell, vol. 31(3), pages 878-902, July.
    6. Asongu, Simplice & Nwachukwu, Jacinta & Tchamyou, Vanessa, 2017. "A summary of a survey on proposed African monetary unions," MPRA Paper 79637, University Library of Munich, Germany.
    7. Anokye M. Adam & Kwabena Kyei & Simiso Moyo & Ryan Gill & Emmanuel N. Gyamfi, 2022. "Multifrequency network for SADC exchange rate markets using EEMD-based DCCA," Journal of Economics and Finance, Springer;Academy of Economics and Finance, vol. 46(1), pages 145-166, January.

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    More about this item

    Keywords

    SADC; OCA; GPPP; real exchange rate; cointegration; panel unit root;
    All these keywords.

    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
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • F15 - International Economics - - Trade - - - Economic Integration
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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