Estimates of teacher "value-added" suggest teachers vary substantially in their ability to promote student learning. Prompted by this finding, many states and school districts have adopted value-added measures as indicators of teacher job performance. In this paper, we conduct a new test of the...

We examine the effects of state health insurance mandates requiring coverage of screening mammograms. We find robust evidence that mammography mandates significantly increased mammography screenings by 4.5-25 percent. Effects are larger for women with less than a high school degree in states...

This review focuses on the health and nutrition impacts of food assistance programs. We focus particular attention on the United States, both because of the plethora of types of programs and associated variation and because spending on these programs is a large share of the nonmedical safety net...

A large literature has been concerned with the impacts of recent welfare reforms on income, earnings, transfers, and labor-force attachment. While one strand of this literature relies on observational studies conducted with large survey-sample data sets, a second makes use of data generated by...