What is the Added Value of Preschool for Poor Children? Long-Term and Intergenerational Impacts and Interactions with an Infant Health Intervention
利用丹麦1933-1960年行政数据，研究发现低收入家庭儿童接受学前教育能提升其成年后的教育、收入和65岁后存活率，并惠及下一代；但婴儿期护士家访项目会降低学前教育的额外价值，两者存在替代关系。
We study the impact of preschool targeted at children from low-income families over the life cycle and across generations, and examine its interaction with an infant health intervention. Using Danish administrative data with variation in the timing of program implementation over the period 1933–1960, we find lasting benefits of access to preschool on adult educational attainment, earnings, and survival beyond age 65. We also show that children of women exposed to pre-school obtain more education by age 25. However, exposure to a nurse home visiting program in infancy reduces the added value of preschool, implying that the programs serve as partial substitutes.