1. Abadie, A., Athey, S., Imbens, G. W., & Wooldridge, J. (2017). When should you adjust standard errors for clustering? NBER Working Paper 24003.
2. Abidin, R. (1995). Parenting stress index third edition: professional manual. Lutz, FL: Psychological Assessment Resources.
3. Arranz Freijo, E. B., Artetxe, F. O., Fernández, A. M., Ayala, J. L. M., & Pérez, N. G. (2012). The Etxadi Gangoiti Scale: a proposal for evaluating the family contexts of two-year-old children. Revista de Educación, 358, 218–237.
4. Attanasio, O. P., Baker-Henningham, H., Bernal, R., Meghir, C., Pineda, D., & Rubio-Codina, M. (2018). Early stimulation and nutrition: the impacts of a scalable intervention. NBER Working Paper 25059.
5. Baird, S., Bohren, J. A., McIntosh, C., & Özler, B. (2018). Optimal design of experiments in the presence of interference. Review of Economics and Statistics, 100(5), 844–860.