data
Replication code and data for my research.
Replication packages for my research. Each links to the code needed to reproduce a paper’s results from public data; inputs that cannot be redistributed are documented rather than bundled.
Taxes and transfers
- “Welfare Reform and the Earned Income Tax Credit in the 1990s” (working paper). Replications of four representative EITC studies showing the canonical difference-in-differences estimates reflect differential exposure to welfare reform, not EITC generosity. Replication package →
Fertility and poverty
- “The Fertility Dividend: Family Size and the Decline in Child Poverty” (working paper). How much of the 20-point fall in U.S. child poverty since 1967 reflects smaller families rather than income growth or transfers. Replication package →
- “Smaller Families and the Fall in Global Absolute Poverty” (working paper). The mechanical contribution of falling fertility to the global decline in $3.00/day poverty, measured across household surveys for 22 developing countries. Replication package →
Housing and mortgage finance
- “How Much Is the Option to Refinance Worth, and Who Captures the Realized Gains?” (working paper). A month-by-month series of what the right to refinance a 30-year fixed-rate mortgage is worth, the market’s price for the same prepayment risk, and the roughly $3.3 trillion households realized by exercising it as rates fell — and who captured them. Replication package →