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打破循环?一项儿童早期反贫困项目的代际效应

Breaking the Cycle? Intergenerational Effects of an Antipoverty Program in Early Childhood
Journal of Political Economy · 2022 · Andrew Barr、Chloe Gibbs

中文摘要

尽管大量证据表明资源和结果在代际间传递,但关于反贫困项目实际上在多大程度上打破不良结果循环的研究仍然有限。我们利用美国最大的儿童早期项目——启智计划(Head Start)的推广实施,估计母亲在儿童早期接触该项目对其子女长期结果的影响。我们发现了项目效应在代际间传递的证据,表现为第二代受教育程度提高、青少年怀孕减少以及参与犯罪减少。这些效应对应的第二代工资折现值估计增幅为6%–11%,具体取决于模型设定。对较早期结果的探索提示,育儿行为的变化和潜在的非认知渠道可能发挥重要作用。

Abstract

Despite substantial evidence that resources and outcomes are transmitted across generations, there has been limited inquiry into the extent to which antipoverty programs actually disrupt the cycle of bad outcomes. We leverage the rollout of the United States’s largest early-childhood program, Head Start, to estimate the effect of early-childhood exposure among mothers on their children’s long-term outcomes. We find evidence of intergenerational transmission of effects in the form of increased educational attainment, reduced teen pregnancy, and reduced criminal engagement in the second generation. These effects correspond to an estimated increase in discounted second-generation wages of 6%–11%, depending on specification. Exploration of earlier outcomes suggests an important role for changes in parenting behavior and potential noncognitive channels.
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