We take stock of the major changes in methodology for studying the impacts of international
agricultural research, focusing on the period 2006–2020. Impact assessment of agricultural …

Governments increasingly use policy experimentation programs to seek solutions for
complex problems. Because randomization and controllability are unrealistic for real‐world …

While results from individual Randomized Controlled Trials (RCTs) often do not hold beyond
their setting, the accumulation of many RCTs can be used to guide policy. But how many …

We examine a canonical case of forced labor: the mita and the encomienda in colonial Peru.
The mita was a labor draft designed to provide workers for mines, churches, and public …

We develop a Bayesian model that produces a posterior distribution of the marginal
treatment effect (MTE) function. The method provides researchers with a principled way to …

The use of observational methods remains common in program evaluation. How much
should we trust these studies, which lack clear identifying variation? We propose adjusting …

Publication decisions shape the process of scientific communication but also influence what
and how research is conducted through their impact on the researcher's private incentives …

Neonatal sepsis kills over 400,000 children annually. Experimental estimates of the
preventive use of chlorhexidine vary widely, leading to external validity concerns. We …