Bold, Tessa; Kimenyi, Mwangi; Mwabu, Germano; Ng'ang'a, … - Department of Economics, Oxford University - 2013
The recent wave of randomized trials in development economics has provoked criticisms regarding external validity. We investigate two concerns - heterogeneity across beneficiaries and implementers - in a randomized trial of contract teachers in Kenyan schools. The intervention, previously...