PPP: a disaggreagated view

• Autores: Christopher Fischer
• Localización: Applied financial economics, ISSN 0960-3107, Vol. 16, Nº. 1-2, 2006 (Ejemplar dedicado a: Special Issue: Purchasing Power Parity and Real Exchange Rates), págs. 93-108
• Idioma: inglés
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• Resumen

  • By disaggregating price indices, it becames apparent that the real exchange rate consists of the real exchange rate for a single good and a weighted sum of relative prices between goods. When applying a battery of panel unit root tests to this sum and its components, it is found that both the sum and the relative prices are non-stationary. This implies that PPP is invalid even if the LOP holds for all goods. The findings contrast with the result from panel unit root tests that real exchange rates as a whole are stationary. Several suggestions for solving the conflict are discussed.