The paper proposes an instrumental variables version of the Huber estimator as an alternative to the IV-Krasker Welsch estimator. The IV-Huber estimator is analytically and computationally much simpler than IV-Krasker Welsch. In the context of an empirical study of the importance of borrowing...

We show that an estimated tractable 'buffer stock saving' model can match the 30-year decline in the U.S. saving rate leading up to 2007, the sharp increase during the Great Recession, and much of the intervening business cycle variation. In the model, saving depends on the gap between 'target'...

This paper explores how different types of financial regulation could combat many of the phenomena that were observed in the financial crisis of 2007 to 2009. The primary contribution is the introduction of a model that includes both a banking system and a "shadow banking system" that each help...

Housing is a major component of wealth. Since house prices fluctuate considerably over time, it is important to understand how these fluctuations affect households' consumption decisions. Rising house prices may stimulate consumption by increasing households' perceived wealth, or by relaxing...

Recent empirical studies have found that consumption is more sensitive to current income than the life-cycle, permanent income hypothesis would predict.The present paper studies a model in which the fraction of consumers exhibiting excess sensitivity is endogenously determined. The presence of...

We study the severity of liquidity constraints in the U.S. housing market using a life-cycle model with uninsurable idiosyncratic risks in which houses are illiquid, but agents have the option to extract home equity by refinancing their long-term mortgages. The model implies that three quarters...

We quantify the role of heterogeneity in households' financial constraints in explaining the large decline in consumption between 2006 and 2009. Using household-level data, we show that in addition to a direct effect of changes in house prices, there are sizable indirect effects from general...

Economists working with numerical solutions to the optimal consumption/saving problem under uncertainty have long known that there are quantitatively important interactions between liquidity constraints and precautionary saving behavior. This paper provides the analytical basis for those...