What do climate change, global financial crises, pandemics, and fragility and conflict have in common? They are all examples of global risks that can cross geographical and generational boundaries and whose mismanagement can reverse gains in development and jeopardize the well-being of...

The interaction between credit frictions, financial innovation, and a switch from optimistic to pessimistic beliefs played a central role in the 2008 financial crisis. This paper develops a quantitative general equilibrium framework in which this interaction drives the financial amplification...

Welfare economics, scope and performance of government, externalities, public goods, cost-benefit analysis, subsidies economize on spending without losing effectiveness by modifying the conceptual framework guiding state expenditures. The familiar framework says that state intervention is...

This paper studies a novel type of misallocation of credit between investments of varying liquidity. One type of investment is more liquid, i.e., its return is more pledgeable, and the other is more productive. Low liquidities of both investment types imply that the allocation of credit is...

The paper explains how a country can fall into a quot;low-skill, bad-job trap,quot; in which workers acquire insufficient training and firms provide insufficient skilled vacancies. In particular, the paper argues that in countries where a large proportion of the workforce is unskilled, firms...

How can a society's well-being be measured to include not only average incomes but alsotheir distribution? How can the effects of policies be assessed by considering both equity andefficiency? This primer outlines the seminal contributions of influential economists of thepast, including Arthur...

Classic models of fire-sales that emphasize liquidity-constrained natural buyers can-notfully account for the asset fire-sales during the Financial Crisis of 2008. I present a modelto demonstrate that fire-sales may happen even when there is a sizable pool of naturalbuyers and in the absence of...

We consider how fear of model misspecification on the part of the planner and/or the households affects welfare gains from optimal macroprudential taxes in an economy with occasionally binding collateral constraints as in Bianchi (2011). On the one hand, there exist welfare gains from...

World trade contracted dramatically during the global economic crisis induced by the COVID-19 pandemic. Disruptions in international supply chains were widely reported as governments imposed containment measures (lockdowns) to halt the spread of the disease. At the same time, demand declined as...

We introduce two types of agent heterogeneity in a calibrated epidemiological search model. First, some agents cannot afford staying home to minimize their virus exposure, while others can. Our results show that these poor agents bear most of the epidemic's health costs. Moreover, we show that...