Talks, financial operations or both? Generalizing central banks' FX reaction functions

摘要

This paper generalizes central banks’ FX interventions reaction functions to include oral interventions alongside actual ones. Using Japanese data for the 1991-2004 period, we estimate an ordered probit explaining the occurrence of each type of intervention and evaluating the extent to which oral and actual interventions are substitutes or complements. Our results indicate that monetary authorities tend to adopt progressively stronger measures as the exchange rate behaves in an increasingly unfavorable way. This suggests that words and acts are used as complements only in extreme cases.