THE PURCHASING POWER PARITY THEORY AND RICARDO'S THEORY OF VALUE

Pablo Ruiz-Nápoles

Contributions to Political Economy, 2004, vol. 23, issue 1, 65-80

Abstract: In this paper the Purchasing Power Parity (PPP) theory and its criticisms are analysed. The majority of studies show that in most cases, the PPP indicator is not a good predictor for nominal exchange rate changes, nor a good indicator of relative competitiveness between countries. Instead, orthodox and non-orthodox economists use relative labour costs to represent real exchange rates. This has interesting implications for the currently accepted price determination theory. In turn, this also allows us to use a Ricardian model as developed by Pasinetti to calculate the ratio of real, vertically integrated unit labour costs between countries as a real exchange rate determination theory and as a sectoral relative competitiveness indicator as well. Copyright 2004, Oxford University Press.

Date: 2004
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