Adoption of productivity and income-enhancing agricultural technologies is conspicuously low in Africa south of the Sahara. Farmers' beliefs regarding the authenticity of agricultural inputs are important for explaining technology adoption: if farmers do not believe that inputs are genuine, they...

Derek Neal writes that economists must analyze public education policy in the same way they analyze other procurement problems. He shows how standard tools from economics research speak directly to issues in education. For mastering the models and tools that economists of education should use in...