DP2913 | Purchasing Power Parity and the Real Exchange Rate

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We assess the progress made by the profession in understanding real exchange rate behaviour, through a selective and critical but nonetheless expository review of the literature. Our reading of the literature leads us to the main conclusions that purchasing power parity might be viewed as a valid long-run international parity condition when applied to bilateral exchange rates among major industrialized countries and that also means reversion in real exchange rates displays significant non-linearities. Further work investigating the effects of real shocks on the long-run equilibrium level also seems warranted.