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Research

Health Insurance and Intimate Partner Violence (with Núria Rodríguez-Planas and Zachary Fone)

The Dependent Coverage Mandate (DCM), enacted as part of the Affordable Care Act in 2010, substantially expanded health insurance coverage among young adults, a population that is both chronically uninsured and disproportionately at risk for intimate partner violence (IPV). In the United States, nearly three-quarters of female IPV survivors were first victimized before age 25, and the lifetime costs of IPV victimization are estimated at $3.65 trillion (2019 dollars). We are the first to study the impact of the DCM on IPV victimization. Using a difference-in-differences design and data from the FBI's National Incident-Based Reporting System for 2008–2013, we find that the DCM reduced IPV victimization among young women ages 22–25 by approximately 4.5 percent relative to women ages 27–29. A mechanisms analysis, drawing on data from the SIPP, MEPS, NHIS, and TEDS, points to three main short-term channels: fewer incentive for age-disparate partnerships, improvements in women's financial stability through reduced out-of-pocket health spending and lower reliance on public assistance, and increased residential proximity to parents. Additional age-specific analyses provide no evidence of a delayed increase or displacement of IPV after women age out of dependent coverage. These findings are robust to a battery of specification checks and are reinforced by a triple-differences strategy exploiting geographic variation in pre-DCM uninsured rates. Back-of-the-envelope calculations suggest the DCM generated $282 million in annual cost savings from IPV reduction alone, underscoring the broad social value of expanding coverage to young adults.

WORKING PAPERS

Lethality Assessment Programs and Intimate Partner Violence (with Núria Rodríguez-Planas and Jennifer Roff)

Using FBI’s National Incident-Based Reporting System (NIBRS) from 2004 to 2019, we estimate the impact of the lethality assessment program (LAP) implemented in 2010 in Delaware on fatal and non-fatal intimate partner violence (IPV) in Delaware in 2010. LAP is designed to empower IPV victims by informing them of their risk of being killed by their partner, offering immediate access to social services, and persuading them to seek help proactively. Using agency-level data and synthetic difference in differences approach, we find that LAP significantly decreased non-fatal IPV by 199 cases per 100,000 inhabitants, representing a decline by 28%. The Poisson regression show that the fatal IPV (IP homicide) are decreased by 37%. Estimates are driven by women who are girlfriends, and younger than 30 years old.

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Publications

Parental education and children’s educational outcomes: evidence from the compulsory schooling law in China (joint with Jingwei Huang, Haiyang Kong and Yixing Tian)

The effect of government COVID-19 containment measures on mental health in China (joint with Jingwei Huang)

Handbook on Inequality and COVID-19, 2025, Edward Elgar Publishing, DOI:https://doi.org/10.4337/9781035302765.00014

SELECTED WORK IN PROGRESS

Child Tax Credits and Maternal Labor Supply
Child Tax Credits and Child Health (with David Simon)

©2026 by Wei Zheng's Personal Website.

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