U.S. Dollar Asymmetry And Exchange Rate Volatility

Abstract

he paper explores the stochastic behavior of six exchange rates three EMS and three non-EMS during the U.S. dollar appreciation (before 1985) and depreciation (after 1985) using Exponential GARCH-M model. The results showed that high volatility in all rates was present before 1985, increased dramatically thereafter, and decreased later for the non-EMS rates. In general, U.S. dollar depreciations increased the volatility more than appreciations did for the French franc, the Italian lira, and the German mark.