This study offers a "best evidence" approach to summarizing recent benefit-cost analyses of international agricultural research in Africa. First, from an extensive literature review and the resulting global inventory of impact studies, 23 studies are identified that calculate aggregate rates of...

This article illustrates a methodology for assessing economic returns to a publicly funded breeding program in the presence of private sector investments, and spill-ins from other contemporary public institutions and past research efforts. The approach consists of determining yield gains from...

This study explores how human capital affects farm household earnings using two tools to refine measurement of human capital effects. First, it employs a two-sector model to allow the allocation of family labor between farm and nonfarm activities. Second, it accounts for village fixed effects to...