Food prices and long-run purchasing power parity in Africa

Joseph Kargbo

Development Southern Africa, 2003, vol. 20, issue 3, 321-336

Abstract: The purchasing power parity (PPP) theory is a cornerstone of exchange rate models in international economics. PPP is very important for two main reasons: first, it can serve as a prediction model for exchange rates, and second, it can serve as a benchmark in judging the level of exchange rate movements. This article utilised the Johansen cointegration technique in examining whether or not there is empirical support for long-run PPP in Africa. Annual data were used for exchange rates and food price indices in 25 countries covering the 1958-97 period. The empirical evidence showed strong support for long-run PPP in Africa, thereby providing wider acceptance for the applicability of PPP in exchange rate and other macroeconomic adjustment policies.

Date: 2003
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DOI: 10.1080/0376835032000108158

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