Does Welfare Inhibit Success? The Long-Term Effects of Removing Low-Income Youth from the Disability Rolls
利用1996年政策变化导致的18岁医疗审查断点回归设计，研究发现被移除出补充保障收入（SSI）的低收入残疾青年在成年后通过工作弥补了约三分之一的现金损失，但16年间总收入仍显著低于未受审查者。
I estimate the effects of removing low-income youth with disabilities from Supplemental Security Income (SSI) on their earnings and income in adulthood. Using a regression discontinuity design based on a 1996 policy change in age 18 medical reviews, I find that youth who are removed from SSI at age 18 recover one-third of the lost SSI cash income in earnings. SSI youth who are removed and stay off SSI earn on average $4,400 annually, and they lose $76,000 in present discounted observed income over the 16 years following removal relative to those who do not receive a review.