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童年营养的长期影响:来自学校午餐改革的证据

Long-Term Effects of Childhood Nutrition: Evidence from a School Lunch Reform
Review of Economic Studies · 2021 · Petter Lundborg、Dan‐Olof Rooth、Jesper Alex-Petersen

中文摘要

我们研究政策驱动的童年营养变化所产生的长期影响。为此,我们评估了一项学校午餐计划:1959年至1969年间,该计划逐步向瑞典小学的所有学生免费提供营养午餐。我们估计该计划对儿童一生中经济、教育和健康结果的影响。结果表明,学校午餐计划产生了可观的长期收益;在整个小学阶段均被该计划覆盖的学生,其终身收入高出3%。对于从较早年龄开始被该计划覆盖的学生以及来自贫困家庭的学生,这一效应更大,表明该计划减少了成年期的社会经济不平等。该计划还对受教育程度和健康产生了实质性影响,而这些影响可以解释该计划对终身收入影响的很大一部分。

Abstract

Abstract We study the long-term impact of a policy-driven change in childhood nutrition. For this purpose, we evaluate a program that rolled out nutritious school lunches free of charge to all pupils in Swedish primary schools between 1959 and 1969. We estimate the impact of the program on children’s economic, educational, and health outcomes throughout life. Our results show that the school lunch program generated substantial long-term benefits, where pupils exposed to the program during their entire primary school period have 3% higher lifetime income. The effect was greater for pupils that were exposed at earlier ages and for pupils from poor households, suggesting that the program reduced socioeconomic inequalities in adulthood. Exposure to the program also had substantial effects on educational attainment and health, which can explain a large part of the effect of the program on lifetime income.
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