This lecture presents a broad overview of postwar analytical thinking on international macroeconomics, culminating in a more detailed discussion of very recent progress. Along the way, it reviews important empirical evidence that has inspired alternative modeling approaches, as well as...

This short note emphasizes and illustrates two basic points: (1) The private costs of unemployment, i.e., the costs borne by the unemployed themselves, vary substantially and are often extremely low. This low private cost is an important cause of the permanently high unemployment rate in the...

Much of the economics literature on epidemics assumes that people know their current health state. Under this assumption, there is no role for testing. To study the general equilibrium e§ects of testing on economic outcomes, we develop a model of epidemics in which people who are not tested are...

Although nation-based systems of financial regulation constitute a second-best approach to global welfare maximization, treacherous accountability problems must be acknowledged and resolved before regulatory cooperation can deal fairly and efficiently with cross-border issues. To track and...

The conventional wisdom is that taxing individuals rather than households is superior from an efficiency point of view under progressive income taxation. This is because it leads to secondary workers, whose labour supply elasticity is high, being taxed at a lower marginal rate than primary...