Does the earned income tax credit increase children's weight? The impact of policy‐driven income on childhood obesity
利用劳动所得税抵免的扩大，研究发现政策驱动的家庭收入增加使儿童肥胖概率上升3个百分点，且母亲陪伴时间减少比收入本身影响更大。
I exploit substantial increases in the earned income tax credit to study how a policy-driven change in family income affects childhood obesity. Using the National Longitudinal Survey of Youth 1979, my difference-in-differences estimates indicate that the probability of being obese increased by 3 percentage points among children whose families experienced a greater income shock. A further investigation suggests that a reduction in maternal time with children played a greater role in children's weight gain than income. The paper's finding shows that a program that is not designed for health purposes, such as earned income tax credit, can have unintended effects on health outcomes.