Modelling the US$/A$ Exchange Rate Using Cointegration Techniques

Costas Karfakis and Anthony Phipps

No 238, Working Papers from University of Sydney, School of Economics

Abstract: Recent evidence indicates that Australia's real effective exchange rate, its terms of trade and a long-term real interest rate differential form a cointegrating relationship. This paper uses this evidence to analyse the nominal US$/A$ exchange rate. The US$/A$ rate is found to be cointegrated with the terms of trade and relative price levels. However, interest rate differentials appear to add nothing to this long-run relationship. Estimated error correction models suggest that there is a substantial two-way relationship between nominal exchange rate changes and changes in the terms of trade. This evidence indicates that the small, open-economy assumption of exogenously given terms of trade may be inappropriate when modelling movements in the US$/A$ exchange rate. Changes in a long-run interest rate differential, possibly reflecting differences in expected inflation rates, contribute significantly to an explanation of short-run changes in the nominal exchange rate.

Keywords: Cointegration; Exchange Rates; Terms of Trade; Interest Parity; Purchasing Power Parity (search for similar items in EconPapers)
Date: 1996-09
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Journal Article: Modelling the US$/A$ Exchange Rate Using Cointegration Techniques (1998)
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