The physical and mental health returns of Head Start 25 years after participation: Evidence from income eligibility cutoffs
研究了1980-1990年代参加美国最大早期儿童干预项目“启蒙计划”的儿童，在25年后的身心健康状况，发现该项目显著改善了健康，使不良健康发生率降低0.15个标准差。
Abstract Most studies that look at long‐term effects of Head Start, the largest early childhood intervention in the US, exploit its rollout in the 1960s, missing the effects of many changes to the program in the 1980s and 1990s. I study the effects of Head Start on long‐term physical and mental health for children who attend Head Start in the 1980s–1990s and are new labor market entrants. I find large improvements in health, resulting in a 0.15 standard deviation decrease in the incidence of poor health. Ultimately, Head Start improves health outcomes up to 25 years after participation in the program.