The transmission of monetary policy across borders is central to many open economy models. Research has tried to evaluate the “impossible trinity” through estimating international interest rate linkages under alternative exchange rate regimes using realized base country interest rates. Such interest rates include anticipated and endogenous elements, which need not propagate internationally. We compare international interest rate responses under pegged and non-pegged regimes to identified, unanticipated and exogenous U.S. interest rate changes and realized U.S. interest rate changes. We find important differences in estimated transmission from the two sets of measures – identified interest rate changes demonstrate a greater concordance with the impossible trinity than realized rate change
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