The response of aggregate labor supply to various changes in the economic environment is central to many economic issues, especially the optimal design of tax policies. Conventional wisdom based on studies in the 1980s and 1990s has long held that the analysis of micro data leads one to conclude...

The response of aggregate labor supply to various changes in the economic environment is central to many economic issues, especially the optimal design of tax policies. This paper surveys recent work that uses structural models and micro data to evaluate the size of this response. Whereas the...

One of the core goals of a universal health care system is to eliminate discrimination on the basis of socioeconomic status. We test for discrimination using patient waiting times for non-emergency treatment in public hospitals. Waiting time should reflect patients’ clinical need with priority...

In 1971 Fortuin, Kasteleyn and Ginibre proved a correlation inequality for monotone functions on certain partially ordered sets. This inequality has become a standard tool in the rigorous analysis of diverse stochastic models, such as those arising in percolation theory, statistical mechanics of...

In a series of papers culminating in the dissertation of the second author under the direction of P.W Kasteleyn, several rigorous results have been obtained concerning the color sequence seen by a random walker on a stochastically black-white colored lattice, and this under the sole assumption...

One of the long-standing issues in the literature on transfer programs for the U.S. low-income population concerns the high cumulative marginal tax rate on earnings induced by participation in the multiplicity of programs offered by the government. Empirical work on the issue has reached an...

This study uses data from the Panel Survey of Income Dynamics (PSID) to address a number of questions about life-cycle earnings mobility. It develops a dynamic reduced-form model of earnings and marital status that is nonstationary over the life-cycle. A Gibbs sampling-data augmentation...

This paper studies selection and moral hazard in the US Medigap health insurance market. It develops an econometric model for insurance demand and health care expenditure, in which the degree of selection is measured by the sensitivity of insurance demand to expected expenditure in uninsured...