@TechReport{iza:izadps:dp16442,
            	author={Dougan, William and García, Jorge Luis and Polovnikov, Illia},
            	title={High-Quality Early-Childhood Education at Scale: Evidence from a Multisite Randomized Trial},
            	year={2023},
	month={Sep},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={16442},
            	url={https://www.iza.org/publications/dp16442},
	abstract={We offer a new analysis of a large-scale trial of an early-childhood education program that targeted premature, low-birthweight children. This targeting heavily oversampled twins, whose outcomes differed significantly from singletons'. Singletons' gains in short-term cognition and age-18 non-cognitive skills were comparable to those of the Perry Preschool and Carolina Abecedarian Projects, supporting those programs' scalability. For twins, however, the program generated smaller positive short-term gains and negative age-18 impacts. These outcome differences arise from differences in parents' response to the program. A household production model suggests that the possibility of jointly supplying parenting to twins helps explain those differences.},
	keywords={childcare;early childhood education;large-scale randomized trial;parental investment;parenting},
            }