1. A simple approximation for evaluating external validity bias;Andrews;Econom. Lett.,2019
2. Treatment effect heterogeneity in theory and practice;Angrist;Econ. J.,2004
3. Recursive partitioning for heterogeneous causal effects;Athey;Proc. Natl. Acad. Sci.,2016
4. The econometrics of randomized experiments;Athey,2017
5. Subsidizing vocational training for disadvantaged youth in Colombia: Evidence from a randomized trial;Attanasio;Am. Econ. J.: Appl. Econ.,2011