In policy research a frequent aim is to estimate treatment effects separately by subgroups. This endeavor becomes a methodological challenge when the subgroups are defined by post-treatment, rather than pre-treatment, variables because if analyses are performed in the same way as with pre-treatment variables, causal interpretations are no longer…

In this article, the author discusses the use in policy analysis of models that incorporate uncertainty. He believes that all models should consider incorporating uncertainty, but that at the same time it is important to understand that sampling variability is not usually the dominant driver of uncertainty in policy analyses. He also argues that…

Each year more than 350,000 babies acquire HIV infection from their mother, mainly in Africa. As sadly constant as this fact is, the policy environment around crafting an effective response has changed rapidly and unpredictably. Sequential advances in antiretroviral therapy, preserving effectiveness with far more practical regimens, have…

The 1996 Personal Responsibility and Work Opportunity Reconciliation Act requires welfare recipients to look for work and has made it more difficult for nonworking recipients to remain on the welfare rolls. In addition, the economic boom of the 1990s and changes in federal and state policies have raised the net income gain associated with moving…

Public policymaking and implementation in the United States are increasingly handled through local, consensus-seeking partnerships involving most affected stakeholders. This paper formalizes the concept of a stakeholder partnership, and proposes techniques for using interviews, surveys, and documents to measure each of six evaluation criteria.…

This paper presents the first large study of public management quality and its effect on program performance. Using 5 years of data from more than 1000 Texas school districts, the authors measure quality as the additional salary paid to school superintendents over and above the normal determinants of salary. This measure of managerial quality is…

Used data from the Panel Study of Income Dynamics to examine the effects of living in public housing as a child at some point between 1968-1982 on four young adult outcomes. Results indicated that having lived in public housing increased employment, raised earnings, and reduced welfare use but had no effect on household earnings relative to the…

Conducted a series of analyses under various assumptions concerning affirmative action plans, causes of racial differences in average college admissions test scores, and racial differences in accuracy of performance predictions. Evidence suggesting a lower level of predictive accuracy for African Americans implies that, under affirmative action,…

Analyzed the responses of Texas charter school households about school choice, comparing expressed preferences and actual behaviors. Results indicated that race was a good predictor of the choice that households made. Whites, Blacks, and Latinos transferred into charter schools where their groups comprised 11-14 percentage points more of the…

Examined the effects of school vouchers on student test scores in three U.S. cities. Data from randomized field trials indicated that after 2 years, African Americans who switched from public to private schools improved academically relative to their public school peers in all three cities. These effects were not significant for other ethnic…

Reformers advocate detracking America's schools, arguing that low-ability students would benefit with little effect on other students' academic performance. This study's results, obtained from a statistical model controlling for track assignment and classroom characteristics, cannot support these claims. Although lower track students would realize…