Long-Term Impacts of Alternative Approaches to Increase Schooling: Experimental Evidence from a Scholarship Program in Cambodia. Felipe Barrera-Osorio, August 24, 2018, Paper, "This paper reports on a randomized experiment to investigate the longterm effects of a primary school scholarship program in rural Cambodia. In 2008, fourth-grade students in 207 randomly assigned schools (103 treatment, 104 control) received scholarships based on the student’s academic performance in math and language or on their level of poverty. Three years after the program’s inception, an evaluation showed that both types of scholarship recipients had more schooling than non-recipients; however, only merit-based scholarships led to improvements in cognitive skills."