What is the optimal number of currencies in the world? Common currencies affect trading costs and, thereby, the amounts of trade, output, and consumption. From the perspective of monetary policy, the adoption of another country's currency trades off the benefits of commitment to price stability...

This book brings together a diverse group of experts on international monetary policy to examine the basic conceptual issues of currency unions and other monetary regimes, including flexible and fixed exchange rates, and assess the available empirical evidence on the performance of these...

This paper provides a critical survey of the literature on politico-institutional determinants of the government budget. We organize our discussion around two questions: Why did certain OECD countries, but not others, accumulate large public debts? Why did these fiscal imbalances appear in the...