The conventional view, as expounded by sticky-price models, is that price adjustment determines the PPP reversion rate …. This study examines the mechanism by which PPP deviations are corrected. Nominal exchange rate adjustment, not price … adjustment, is shown to be the key engine governing the speed of PPP convergence. Moreover, nominal exchange rates are found to …

This study investigates whether exchange rate flexibility aids real exchange rate adjustment based on intra-period data … produces faster or slower real exchange rate adjustment than the much less flexible official rate does. Half-life estimates of … adjustment speeds are obtained using fractional time series analysis. We find no systematic evidence that greater exchange rate …