We live in a new world economy characterized by financial globalization and historically low interest rates. This environment is conducive to countries experiencing credit bubbles that have large macroeconomic effects at home and are quickly propagated abroad. In previous work, we built on the...

We study a dynamic economy where credit is limited by insufficient collateral and, as a result, investment and output are too low. In this environment, changes in investor sentiment or market expectations can give rise to credit bubbles, that is, expansions in credit that are backed not by...

We live in a new world economy characterized by financial globalization and historically low interest rates. This paper presents a simple analytical framework that helps us understand how this new world economy works from the perspective of an emerging economy. Financial globalization gives rise...

We explore a view of the crisis as a shock to investor sentiment that led to the collapse of a bubble or pyramid scheme in financial markets. We embed this view in a standard model of the financial accelerator and explore its empirical and policy implications. In particular, we show how the...

We develop a stylized model of economic growth with bubbles. In this model, changes in investor sentiment lead to the appearance and collapse of macroeconomic bubbles or pyramid schemes. We show how these bubbles mitigate the effects of financial frictions. During bubbly episodes, unproductive...

I develop an overlapping-generations framework in which changes in lending standards generate endogenous cycles. In my economy, entrepreneurs who are privately informed about the quality of their projects need to borrow funds. Intermediaries screen entrepreneurs both through the amount of...