Central banks were not always as ubiquitous as they are today. Their functions were circumscribed, their mandates ambiguous, and their allegiances once divided. The inter-war period saw the establishment of twenty-eight new central banks - most in what are now called emerging markets and...

Recent crises in emerging markets have been heavily driven by balance-sheet or net-worth effects. Episodes in countries as far-flung as Indonesia and Argentina have shown that exchange rate adjustments that would normally help to restore balance can be destabilizing, even catastrophic, for...