The exchange value of the dollar and the U.S. trade balance: An empirical investigation based on cointegradon and Granger causality tests

This article performs tests of Granger causality in the relationships between the nominal ad real exchange rates of the dollar and the U.S. trade balance as well as its price and quantity components over the period 1973:IIQ–1989:IIIQ. Our results suggest: (i) weak statistical evidence of unidirectional causality running from the nominal exchange rate to import prices and nominal trade balance (ii) no statistical support for the proposition that the real exchange rate simply “accommodates” changes in the real trade balance, and (iii) strong (no) causal links between the nominal and real exchange rates and export (import) volume. We tentatively conclude that movements in the exchange rate have a rather limited effect on the trade balance and that this effect is more likely to materialize on the export side of the trade balance.