We analyze the impact of expanded adult Medicaid eligibility on the enrollment of already-eligible children. We analyze the 2008 Oregon Medicaid lottery, in which some low-income uninsured adults were randomly selected to be allowed to apply for Medicaid. Children in these households were eligible for Medicaid irrespective of the lottery outcome. We estimate statistically significant but transitory impacts of adult lottery selection on child Medicaid enrollment: at three months after the lottery, for every 9 adults who enrolled in Medicaid due to winning the lottery, one additional child also enrolled. Our results shed light on the existence, magnitude, and nature of so-called "woodwork effects".
Although in-person college access programs can be effective, less is known about whether low-cost and scalable virtual interventions can achieve the same benefits. We evaluate two variants of a virtual college counseling program. Students randomly assigned to the program felt more supported applying to college and applied more broadly to four-year colleges, but were not more likely to be accepted or enroll. We analyze rich and extensive survey data to explore mechanisms and why the program did not improve college enrollment. We conclude that low-intensity programs may work for some students, but many probably need in-person and intensive help.

