This paper studies the identification and estimation of treatment response with heterogeneous spillovers in a network model. We generalize the standard linear-in-means model to allow for multiple groups with between and within-group interactions. We provide a set of identification conditions of...

We consider a production function model that transforms worker inputs into outputs through peer effect networks. The distinguishing features of this production model are that the network is formal and observable through worker scheduling, and selection into the network is done by a manager. We...

We analyze peer effects in sleeping behavior using a representative sample of U.S. teenagers from the National Longitudinal Survey of Adolescent Health. The sampling design of the survey causes the conventional 2SLS estimator to be inconsistent. We extend the NLS estimator in Wang and Lee...

How is the economic status of the elderly changing and what are their prospects for the future? My portrait tells us how well off they are on average, but also about the vast disparities that exist among them. This description includes an often neglected measure of their economic well-being--the...

Perhaps the single greatest achievement of social policy in the United States over the last three decades has been reducing poverty in old age. The transition from work to retirement is no longer economically perilous for the vast majority of older American workers. For most married couples, the...

In June 2003 the New York State Court of Appeals altered the education-finance landscape with its ruling in Campaign for Fiscal Equity v. New York. This ruling called for “[r]eforms to the current system of financing school funding” designed to ensure “that every school in New York City...

One is always hesitant to speak about the future. A famous philosopher from New York, Yogi Berra, said "Making predictions is difficult, especially about the future," and I have some trepidation about doing so now. There is also the difficulty of understanding what really has happened in the...

Just as managed care has changed utilization and incentives in other parts of health care, there is a whole set of incentives built around long-term care that really matter. For example, if nursing homes have a financial incentive to hospitalize people with certain health conditions, then in the...