TY - RPRT AU - Breitkopf, Laura AU - Chowdhury, Shyamal AU - Kamhöfer, Daniel A. AU - Schildberg-Hörisch, Hannah AU - Sutter, Matthias TI - The Right Timing Matters: Sensitive Periods in the Formation of Socio-Emotional Skills PY - 2025/Jun/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 17974 UR - https://www.iza.org/publications/dp17974 AB - Identifying sensitive periods in which the returns to investments into skills are especially high is challenging, but crucial for an effective and efficient timing of parental or public investments aimed at fostering children’s skills. We can detect sensitive periods with a novel design by implementing the same investment in different school grades and examining grade-specific treatment effects. Based on a randomized controlled trial with more than 3,200 Bangladeshi children in grades 2 to 5, we find sensitive periods in the formation of self-control and patience in grade 2 (age 7–8), while prosociality remains similarly malleable throughout grades 2 to 5 (age 7–11). KW - social and emotional learning program KW - prosociality KW - patience KW - self-control KW - randomized controlled trial KW - skill formation KW - sensitive periods KW - experiments with children KW - Bangladesh ER -