We examine the effectiveness of capital controls versus macroprudential regulation in reducing financial fragility in a small open economy model in which there is excessive borrowing because of externalities associated with financial crises and contractionary exchange rate depreciations. We find...

Financial regulation is often framed as a question of economic efficiency. This paper, by contrast, puts the distributive implications of financial regulation center stage. We develop a model in which the financial sector benefits from risk-taking by earning greater expected returns. However,...

The 1990s Sudden Stops in emerging markets were a harbinger for the 2008 global financial crisis. During Sudden Stops, countries lost access to credit, causing abrupt current account reversals, and suffered Great Recessions. This paper reviews a class of models that yields quantitative...

We study the interplay of optimal ex-ante (macroprudential) and ex-post (monetary or fiscal stimulus) measures to respond to systemic financial crises in a tractable model of fire sales. We find that it is generally optimal to use both, rejecting the Greenspan doctrine to only intervene ex post....

We study a dynamic model in which the interaction between debt accumulation and asset prices magnifies credit booms and busts. We find that borrowers do not internalize these feedback effects and therefore suffer from excessively large booms and busts in both credit flows and asset prices. We...

Traditional economic models have had difficulty explaining the non-monotonic real effects of credit booms and, in particular, why they have predictable negative after-effects for up to a decade. We provide a systematic transmission mechanism by focusing on the flows of resources between...

Macroeconomics has not done well in recent years: The standard models didn't predict the Great Recession; and even said it couldn't happen. After the bubble burst, the models did not predict the full consequences

An iconic model with high leverage and overvalued collateral assets is used to illustrate the amplification mechanism driving asset prices to 'overshoot' equilibrium when an asset bubble bursts--threatening widespread insolvency and what Richard Koo calls a 'balance sheet recession'

This paper develops a framework to analyze the consequences of alternative designs for interbank networks, in which a failure of one bank may lead to others. Earlier work had suggested that, provided shocks were not too large (or too correlated), denser networks were preferred to more sparsely...

The concentration of risk within the financial system leads to systemic instability. We propose a theory to explain the structure of the financial system and show how it alters the risk taking incentives of financial institutions when the government optimally intervenes during crises. By issuing...