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Testing the Monetary Model for Exchange Rate Determination in South Africa: Evidence from 101 Years of Data

Riane de Bruyn (), Rangan Gupta () and Lardo Stander ()
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Riane de Bruyn: Department of Economics, University of Pretoria

No 201134, Working Papers from University of Pretoria, Department of Economics

Abstract: Evidence in favour of the monetary model of exchange rate determination for the South African Rand is at best mixed. A co-integrating relationship between the nominal exchange rate and fundamentals forms the basis of the monetary model. With the econometric literature suggesting that it is the span of the data, and not the frequency, that determines the power of the co-integration tests, and all the studies on South Africa using short-span data of the post-Bretton Woods era, we decided to test the long-run monetary model of exchange rate determination for the South African Rand relative to the US Dollar, using annual data from 1910 – 2010. The results provide some support for the monetary model in the sense that long-run co-integration is found between the nominal exchange rate and the output and money supply deviations. However, the theoretical restrictions required by the monetary model are rejected. A vector errorcorrection model identifies both the nominal exchange rate and the monetary fundamentals as the channel for the adjustment process of deviations from the long-run equilibrium exchange rate. A subsequent comparison of nominal exchange rate forecasts based on the monetary model with those of the random walk model, suggests that the forecasting performance of the monetary model is superior.

Keywords: Nominal exchange rate; monetary model; long-span data; forecasting (search for similar items in EconPapers)
JEL-codes: C22 C32 C53 F31 F47 (search for similar items in EconPapers)
Pages: 22 pages
Date: 2011-12
New Economics Papers: this item is included in nep-afr, nep-cba, nep-for and nep-mon
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