Nominal and Real Exchange Rate Models in South Africa: How Robust Are They?
No 2012-18, EconomiX Working Papers from University of Paris Nanterre, EconomiX
This paper addresses difficulties in modelling exchange rates in South Africa. Real exchange rate models of earlier research seem to be sensitive to the sample period considered, alternative variable definition, data frequency and estimation methods. Alternative exchange rate models proposed in this paper including the stock-flow approach and variants of the monetary model are not fully robust to data frequency and alternative estimation periods, either. Nevertheless, adding openness to the stock-flow approach and augmenting the monetary model with share prices and the country risk premium improves significantly the fit of the models around the large (nominal and real) depreciation episodes of 2002 and 2008. Interestingly, real commodity prices do not help explain the large depreciations. While these models do a reasonably good job in-sample, their out-of-sample forecasting properties remain poor.
Keywords: exchange rate; real exchange rate; nominal exchange rate; commodity; Balassa-Samuelson; productivity; monetary model; stock-flow approach; openness; country risk (search for similar items in EconPapers)
JEL-codes: E31 F31 O11 P17 (search for similar items in EconPapers)
Pages: 22 pages
New Economics Papers: this item is included in nep-afr, nep-cba, nep-for, nep-mac and nep-mon
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Working Paper: Nominal and Real Exchange Rate Models in South Africa: How Robust are they? (2012)
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Persistent link: https://EconPapers.repec.org/RePEc:drm:wpaper:2012-18
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