Most environments where assignment mechanisms (possibly random) areused are such that participants have outside options. For instance private schools and private housing are options that participants ...

I study the relative academic performance of students tracked or randomly assigned to South African university dormitories. Tracking reduces low-scoring students’ GPAs and has little effect on ...

Hydroxychloroquine, chloroquine, and remdesivir are among the drugs commonly discussed as treatments for the new viral infection, coronavirus disease 2019 (COVID-19). Previously, I described different ...