A critical question for emerging-market policymakers is how to adjust to monetary policy changes in the center. A core tenet of modern macroeconomic theory is that countries should let their exchange rate float when financial conditions abroad change. This allows the nominal and real exchange rates ...

Ever since David Hume introduced his price-specie flow mechanism in 1752, the question of external adjustment has been a classic issue for international macroeconomists. In 1968 Robert Mundell asked “To what extent should surplus countries expand, to what extent should deficit countries contract?” ...