This book evaluates the evidence on the impacts of population growth on well-being in developing countries and concludes that slowing population growth from high current levels, especially in poor, agrarian societies facing pressure on land and resources, is advantageous to economic development,...

We use the estimates from a hazard model of college student departure to simulate how changes in financial-aid packaging affect students' departure decisions over time. We find that changing loans to scholarships, as Princeton has recently done, has a large impact on retention and that...

We present a multiple spells-competing risks model of stopout, dropout, reenrollment, and graduation behavior. We find that students who experience an initial stopout are more likely to experience subsequent stopouts (occurrence dependence) and be less likely to graduate. We also find evidence...

Using data from the 1979 National Longitudinal Survey of Youth (NLSY79), we investigate the college attendance, dropout, and graduate behavior of high school graduates. Bivariate duration models, which allow the unobserved determinants of spell durations to be correlated across spells, are...

We jointly model the application, admission, financial aid determination, and enrollment decision process. We simulate how enrollment and application behavior change when important factors like financial aid are permitted to vary. An innovation is the investigation into the role of financial aid...