Revised and updated Population Center Working Paper (PSC/PARC): Amin, Vikesh, Jere Behrman, Jason Fletcher, Carlos Flores, Alfonso Flores-Lagunes, and Hans-Peter Kohler. 2019. "Mental Health, Schooling Attainment and Polygenic Scores: Are There Significant Gene-Environment Associations?." University of Pennsylvania Population Center Working Paper (PSC/PARC), 2020-24.