This paper studies the role of the yen/dollar exchange rate in the Bank of Japan’s monetary policy reaction function. In contrast to prior estimations of reaction functions based on the Taylor-rule, we allow for regime shifts by estimating rolling coefficients from January 1974 to March 1999....

Before the 1997-98 crisis, the East Asian economies—except for Japan—informally pegged their currencies to the dollar. These soft pegs made them vulnerable to a depreciating yen thereby aggravating the crisis. To limit future misalignments, the IMF wants East Asian currencies to float...