This paper estimates peer effects originating from the ability composition of tutorial groups for undergraduate students in economics. We manipulated the composition of groups to achieve a wide range of support, and assigned students - conditional on their ability - randomly. The data support a...

This paper presents evidence about the impact on school enrollment of a program in Ecuador that gives cash transfers to the 40 percent poorest families. The evaluation design consists of a randomized experiment for families around the first quintile of the poverty index and of a regression...

To raise school attendance, many programs in developing countries eliminate orreduce private contributions to education. This paper documents an unintendednegative effect of such programs. Using data from a randomized experiment thatprovides free uniforms to primary school children in Ecuador,...