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Highlighted Publications


Do Four-Day School Weeks Help Schools Retain Teachers?
Ainsworth, Liu, and Penner (2026) asked whether adopting a four-day school week changes teacher turnover in the short and long term. They analyzed administrative records for all public school employees in Oregon from 2006–2007 through 2023–2024, using a difference-in-differences research design to estimate the policy’s causal effects. They found that schools adopting a four-day week experienced a 2.0 percentage point increase in teacher turnover. This included a 0.7 percentag
22 hours ago


How Do Physician Incomes Compare Across the United States, Canada, Sweden, and the Netherlands?
Buehler et al. (2026) asked how physician incomes compare across the United States, Canada, the Netherlands, and Sweden, and whether higher US physician pay reflects physicians’ relative position in the income distribution or higher incomes at comparable income levels. They analyzed administrative tax records covering nearly all physicians in each country. They found that physicians ranked among the highest earners everywhere, but US physicians earned much more. Eighty-four p
3 days ago


Did Medicare Coverage for Methadone Increase Treatment for Opioid Use Disorder?
Agniel et al. (2026) asked whether Medicare’s 2020 decision to cover methadone treatment for opioid use disorder changed how opioid treatment programs operated and whether it expanded access to care. They analyzed national administrative data on treatment facilities (2015–2023) and treatment episodes using difference-in-differences methods. They found that opioid treatment programs were 45.4 percentage points more likely to accept Medicare after the policy, nearly doubling pa
6 days ago


Do Stricter School Cell Phone Policies Reduce Student Phone Use?
Diliberti et al. (2026) examined whether stricter school cell phone policies reduce students’ cell phone use during the school day. They analyzed survey responses from 774 U.S. middle and high school students in the nationally representative RAND American Youth Panel, comparing students across five levels of policy strictness. They found that stricter policies substantially reduced phone use. About 84% of students in schools with the most lenient policies checked their phones
Jul 2
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