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作者：Ferrazares, Toshio; Sabia, Joseph J.; Anderson, D. Mark
作者单位：City University of New York (CUNY) System; Hunter College (CUNY); California State University System; San Diego State University; Montana State University System; Montana State University Bozeman
摘要：Gun buyback programs (GBPs), which use public funds to purchase civilians' privately-owned firearms, aim to reduce gun violence. However, next to nothing is known about their effects on firearm-related crime or deaths. Using data from the National Incident Based Reporting System, we find no evidence that GBPs reduce gun crime. Given our estimated null findings, with 95% confidence, we can rule out decreases in firearm-related crime of greater than 1.2% during the year following a buyback. Usin...
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作者：Hatsor, Limor; Shurtz, Ity
作者单位：Jerusalem College of Technology; Ben-Gurion University of the Negev
摘要：We use a baby formula food scare in Israel in 2003 as a plausible natural experiment to study the causal relationship between breastfeeding and mothers' return to work after childbirth. Analysis of administrative data covering the universe of births in the country shows that first-time mothers who gave birth shortly after the scare delayed their return to work. Their average months worked in the first 6 months after childbirth fell by about 11% relative to their counterparts in the previous ye...
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作者：Bell, Courtney; James, Jessalynn; Taylor, Eric S.; Wyckoff, James
作者单位：University of Wisconsin System; University of Wisconsin Madison; Harvard University; National Bureau of Economic Research; University of Virginia
摘要：We study the returns to experience in teaching, estimated using supervisor ratings from classroom observations. We describe the assumptions required to interpret changes in observation ratings over time as the causal effect of experience on performance. We compare two difference-in-differences strategies: the two-way fixed effects estimator common in the literature, and an alternative which avoids potential bias arising from effect heterogeneity. Using data from Tennessee and Washington, DC, w...
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作者：Lennon, Conor
作者单位：Rensselaer Polytechnic Institute
摘要：The Affordable Care Act (ACA) provided funding to help states expand Medicaid eligibility to those earning up to 138% of the Federal Poverty Level. Such expansions in Medicaid eligibility, however, could crowd out private insurance coverage, including changes in coverage relating to other ACA provisions. To estimate the extent of such crowd out, I use a difference-in-differences empirical approach, examining changes in health insurance coverage sources among low-income Americans in states that...
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作者：Armour, Philip; Gadwah-Meaden, Catria
作者单位：RAND Corporation
摘要：The last few decades have seen rapid growth in the size of the Veterans Affairs Disability Compensation (VADC) program, which provides tax-free cash benefits to veterans with disabilities connected to military service. Given this recent growth, VADC is on pace to eclipse Social Security Disability Insurance (SSDI) to become the largest U.S. disability program by expenditures. Although there are decades of causal research on the design and impacts of SSDI, there is no comparable body of evidenc...
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作者：[Anonymous]
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作者：Elston, Thomas; Bel, Germa; Wang, Han
作者单位：University of Oxford; University of Barcelona; University of Southampton
摘要：Decentralized implementation of means-tested social assistance programs requires significant organizational capacity among local governments. For other types of local public service, like refuse collection and utilities provision, inter-municipal cooperation has proven capable of reducing the cost of subnational policy implementation, especially for smaller municipalities. But few impact evaluations test whether the same benefits can be achieved for less capital-intensive and more co-produced ...
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作者：Michelmore, Katherine; Akee, Randall
作者单位：University of Michigan System; University of Michigan; University of California System; University of California Los Angeles
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作者：Bell, Courtney; James, Jessalynn; Taylor, Eric S.; Wyckoff, James
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作者：Levinson, Arik
作者单位：Georgetown University
