between social security and Medicaid. As a result of these interactions, we find that the US social security significantly lowers the cost of financing Medicaid and other welfare programs for the elderly as it reduces the fraction of households who choose to rely on means-tested transfers to...

Poor health, large acute and long-term care medical expenses, and spousal death are significant drivers of impoverishment among retirees. We document these facts and build a rich, overlapping generations model that reproduces them. We use the model to assess the incentive and welfare effects of...

are the computation of the density of the capital stock in the neoclassical growth model and the computation of the wealth density in an incomplete market economy.

The Rouwenhorst method of approximating stationary AR(1) processes has been overlooked by much of the literature despite having many desirable properties unmatched by other methods. In particular, we prove that it can match the conditional and unconditional mean and variance, and the first-order...

In 1910 the average American city was a small and densely populated place where the dominant form of intracity transportation was the electric streetcar. Despite the release of the Model T in 1908, less than one percent of Americans owned a car. In contrast, by 1970, almost every family in the...

We evaluate the joint effects of social security and Medicaid on labor supply, savings, economic inequality, and welfare in an environment with idiosyncratic risk in labor earnings, health expenses, and survival. The model features households consisting males and females; a progressive social...

This paper re-examines the Rouwenhorst method of approximating first-order autoregressive processes. This method is appealing because it can match the conditional and unconditional mean, the conditional and unconditional variance and the first-order autocorrelation of any AR(1) process. This...

Suburbanization in the United States between 1910 and 1970 was concurrent with the diffusion of the automobile. A circular city model is developed in order to access quantitatively the contribution of automobiles and rising incomes to suburbanization. The model incorporates a number of driving...

We consider a life-cycle model with idiosyncratic risk in earnings, out-of-pocket medical and nursing home expenses, and survival. Partial insurance is available through welfare, Medicaid, and social security. Calibrating the model to the United States we show that savings for old-age,...