Many countries subsidize agricultural inputs but require farmers to travel to retailers to access inputs, just as for normal purchases. What effect do travel costs have on subsidy take-up and input usage, particularly for remote farmers? We analyze Malawi's Farm Input Subsidy Program (FISP), and...

An influential explanation for global productivity differences is that frontier technologies are adapted to the high-income countries that develop them and "inappropriate" elsewhere. We study this hypothesis in agriculture using data on novel plant varieties, patents, output, and the global...

Crop farmers have few short-run options for reducing downside production risk from changes in drought frequency and intensity due to ongoing climate change. However, one recently available option is drought-tolerant (DT) varieties. We determine how recent drought exposure, drought risk, and...

The expansion in farm size is an important contributor to agricultural productivity in developed countries, but the reallocation process is hindered in less developed economies. How do distortions to factor reallocation affect farm dynamics and agricultural productivity? We develop a model of...

This study reports the findings from a year-long randomized evaluation assessing the impact of assigning 62 classrooms in Nigeria to receive either blocked or interleaved math problem sets. Blocked practice sessions focused on a single skill at a time. Interleaved problem sets alternated between...

This study examines the long-term effects of prenatal exposure to war violence on cognitive and developmental outcomes, focusing on children in Afghanistan, a country deeply affected by prolonged violent conflict. Using data from the 2022 Afghanistan Multiple Indicator Cluster Surveys and...

Gender-based violence (GBV) at schools is a pervasive problem that affects millions of adolescent girls worldwide. In partnership with the Ministry of Education in Mozambique, we developed an intervention to increase the capacity of key school personnel to address GBV and to improve students'...

Public-sector organizations face a tradeoff: allowing workers discretion at the point of service to adapt to local needs, versus rigid harmonization to ensure uniform service delivery. We examine this tradeoff in the context of secondary schools in Odisha, India, where the centrally set...

What sparked humanity's leap from stagnation to prosperity? What lies at the core of inequality among nations? Unified Growth Theory explores the evolution of societies over the entire course of human history. It uncovers the universal wheels of change that have governed the journey of humanity,...