Abadie, A. and G. Imbens (2002). Simple and Bias-Corrected Matching Estimators for Average Treatment E ects. NBER WP 283 . Almlund, M., A. Duckworth, J. Heckman, and T. Kautz (2011). Personality Psychology and Economics. In Handbook of the Economics of Education, Volume 4 (5), Chapter 1, pp. 1{181. Elsevier. Altonji, J. G., T. E. Elder, and C. R. Taber (2005). Selection on Observed and Unobserved Variables: Assessing the E ectiveness of Catholic Schools. Journal of Political Economy 113 (1), 151{184. Balart, P. and M. Oosterveen (2019). Females show more sustained performance during test-taking than males. Nature Communications 10, Article number: 3798. Balart, P., M. Oosterveen, and D. Webbink (2018). Test Scores, Noncognitive Skills and Economic Growth. Economics of Education Review 63, 134{153. Battaglia, M. and L. Lebedinski (2015). Equal Access to Education: An Evaluation of the Roma Teaching Assistant Program in Serbia. World Development 76, 62{81. Bernstein, D., L. Penner, A. Clarke-Sterwart, and E. Roy (2007). Psychology. 8th edition, Wadsworth Publishing. Bertrand, M. and J. Pan (2013). The Trouble with Boys: Social In uences and the Gender Gap in Disruptive Behavior. American Economic Journal: Applied Economics 5 (1), 32{64. Bettinger, E. and B. Long (2009). Addressing the Needs of Under-prepared College Students: Does College Remediation Work? Journal of Human Resources 44, 736{ 771. Borghans, L., A. Duckworth, J. Heckman, and B. T. Weel (2008). The Economics and Psychology of Personality Traits. Journal of Human Resources 43 (4), 972 {1059. 34 http://www.upo.es/econ Borghans, L. and T. Schils (2018). Decomposing achievement test scores into measures of cognitive and noncognitive skills. Working Paper Available at SSRN:https://ssrn. com/abstract=3414156. Brunello, G., A. Crema, and L. Rocco (2018). Testing at Length If It is Cognitive of Non-Cognitive. IZA DP 11603 . Busso, M., J. D. Nardo, and J. McCrary (2014). New Evidence on the Finite Sample Properties of Propensity Score Matching and Reweighting Estimators. Review of Economics and Statistics 96(5). Calcagno, J. and B. T. Long (2008). The Impact of Postsecondary Remediation Using a Regression Discontinuity Approach: Addressing Endogenous Sorting and Noncompliance. NBER WP 14194 . Carcillo, S., R. Fernandez, S.Konigs, and A. Minea (2015). NEET Youth in the Aftermath of the Crisis: Challenges and Policies. Technical report, OECD Social, Employment and Migration Working Papers, No. 164, OECD Publishing Paris. Carneiro, P. and J. Heckman (2003). Human Capital Policy. IZA DP 821 . Cornwell, C., D. B. Mustard, and J. V. Parys (2013). Noncognitive Skills and the Gender Disparities in Test Scores and Teacher Assessments: Evidence from Primary School. Journal of Human Resources 48 (1), 236{264. Cunha, F. and J. Heckman (2008). Formulating, Identifying and Estimating the Technology of Cognitive and Noncognitive Skill Formation. Journal of Human Resources 43(4), 738{82. De Paola, M. and V. Scoppa (2014). The E ectiveness of Remedial Courses in Italy: A Fuzzy Regression Discontinuity Design. Journal of Population Economics 27(2), 365{ 386. De Paola, M. and V. Scoppa (2015). Procrastination, Academic Success and the E ectiveness of a Remedial Program. Journal of Economic Behavior and Organization 115, 217{236. Fryer, R. G. and S. D. Levitt (2010). An Empirical Analysis of the Gender Gap in Mathematics. American Economic Journal: Applied Economics 2(2), 210{240. García-Pérez, J. and M. Hidalgo-Hidalgo (2017). No Student Left Behind? Evidence from the Programme for School Guidance in Spain. Economics of Education Review 60, 97{ 111. Heckman, J. (2000). Policies to Foster Human Capital. Reseach in Economics 54, 3{56. Heckman, J. and Y. Rubinstein (2001). The Importance of Noncognitive Skills: Lessons from the GED Testing Program. American Economic Review 91(2), 145{49. Heckman, J., J. Stixrud, and S. Urzua (2006). The E ects of Cognitive and Noncognitive Abilities on Labor Market Outcomes and Social Behavior. Journal of Labor Economics 24(3), 411{82. Hirano, K., G. Imbens, and G. Ridder (2003). Ecient Estimation of Average Treatment E ects using the Estimated Propensity Score. Econometrica 71(4), 1161{1189. Hitt, C., J. Trivitt, and A. Cheng (2016). When You say Nothing at All: The Predictive Power of Student E ort on Surveys. Economics of Education Review 52, 105{119. Holmlund, H. and O. Silva (2014). Targeting Noncognitive Skills to Improve Cognitive Outcomes: Evidence from a Remedial Education Intervention. Journal of Human Capital 8(2), 126{160. Hospido, L., E. Villanueva, and G. Zamarro (2015). Finance for All: the Impact of Financial Literacy Training in Compulsory Secondary Education in Spain. Banco de Espa~na WP 1502 . Jacob, B. A. (2002). Where the Boys aren't: Non-cognitive Skills, Returns to School and the Gender Gap in Higher Education. Economics of Education Review 21(6), 589{598. Lavy, V., A. Kott, and G. Rachkovski (2020). Does Remedial Education at Late Childhood pay o after all? Long-run Consequences for University Schooling, Labor Market Outcomes and Inter-generational Mobility. Journal of Labor Economics, forthcoming. Lavy, V. and A. Schlosser (2005). Targeted Remedial Education for Underperforming Teenagers: Costs and Bene ts. Journal of Labor Economics 23(4), 839{874. Lindqvist, E. and R. Westman (2011). The Labor Market Returns to Cognitive and Noncognitive Ability: Evidence from the Swedish Enlistment. American Economic Journal: Applied Economics 3(1), 101{28. Lord, F. M. (1952). The Relationship of the Reliability of Multiple-Choice Test to the Distribution of Item Diculties. Psychometrika 18, 181{194. Martins, P. (2017). (How) Do Non-Cognitive Skills Programs Improve Adolescent School Achievement? Experimental Evidence. CGE Working Paper 81 . Nollenberger, N., N. Rodrguez-Planas, and A. Sevilla (2016). The Math Gender Gap: The Role of Culture. American Economic Review 106(5), 257{261. OECD (2013). Crisis Squeezes Income and puts Pressure on Inequality and Poverty. Technical report, OECD Publishing, Paris. Oster, E. (2019). Unobservable Selection and Coecient Stability: Theory and Evidence. Journal of Business & Economic Statistics 37 (2), 187{204. Rivkin, S. G., E. A. Hanushek, and J. F. Kain (2005). Teachers, schools, and academic Achievement. Econometrica 73(2), 417{458. Rodríguez-Planas, N. and N. Nollenberger (2018). Let the Girls Learn! It is not Only about Math.. It's about Gender Social Norms. Economics of Education Review 62, 230-153. Sternberg, R. J., G. Forsythe, J. A. Hedlund, R. Horvath, R. K. Wagner, W. Williams, S. A. Snook, and E. Grigorenko (2000). Practical Intelligence in Everyday Life. New York, NY, Cambridge University Press. Ster Weel, B. (2008). The Noncognitive Determinants of Labor Market and Behavioral Outcomes: Introduction to the Symposium. Journal of Human Resources 43(4), 729{ 37. Zamarro, G., A. Cheng, M. D. Shakeel, and C. Hitt (2018). Comparing and Validating Measures of Non-Cognitive Traits: Performance Task Measures and Self-reports from a Nationally Representative Internet Panel. Journal of Behavioral and Experimental Economics 72(C), 51{60. Zamarro, G., C. Hitt, and I. Mendez (2019). When Students Don't Care: Reexamining International Di erences in Achievement and Student E ort. Journal of Human Capital 13 (4), 519{552.