We propose a new methodology for decomposing the persistence of deviations from purchasing power parity (PPP). By directly comparing the impulse response function (IRF) of a vector autoregressive (VAR) model, where the real exchange rate is Granger caused by a set of candidate variables, with...

This paper employs a new methodology for measuring the contribution of growth and interest rate differentials to the half-life of deviations from Purchasing Power Parity (PPP). Our method is based on directly comparing the impulse response function of a VAR model, where the real exchange rate is...

This paper investigates the Purchasing Power Parity Puzzle in the context of a Vector Autoregressive(VAR) model, where the real exchange rate is Granger caused by macroeconomic variables, suggested by 'sticky-price' theories of exchange rate determination. By doing this, we are able to discern...