Working papers (with drafts) and works in progress (without drafts) are below.
To identify the causal effect of small changes in the "dose", DD with a continuous treatment requires stronger assumption than just traditional parallel trends.
Difference-in-differences with a Continuous Treatment
arXiv | July 2021.
Subsidized legal aid increased divorce, welfare participation, and non-marital births.
Changes in Family Structure and Welfare Participation Since the 1960s: the Role of Legal Services
pdf | Appendix | FAQ | Revise and Resubmit, AEJ: Applied Economics, since May 2021.
A survey article about evidence on long-run effects of War on Poverty programs.
The War on Poverty 55 Years Later: a Review of Long-Run Effects
A survey article about new developments in difference-in-differences methods.
Difference-in-Differences with Variation in Treatment Timing: A Practitioner’s Guide
How did a policy that subsidized welfare benefits more in poor states affect generosity?
Who Benefits from Federal Welfare Spending? Evidence from the Introduction of Progressive Cost Sharing
Did the introduction of a welfare program for adults with disabilities raise their welfare income?
The Introduction of Disability Welfare Benefits and the Size of the Safety Net