A reappraisal of parity reversion for UK real exchange rates

Abstract

We apply a new approach to test the long-run purchasing power parity theory of real exchange rate movements for the UK. The question of whether real exchange rates have a unit root or are mean reverting is set in the more general framework of fractionally differenced time-series models. Our results suggest that in the current period of floating rates, UK real exchange rates return to parity in the long run.