This paper shows that large, multi-establishment business enterprises face a high cost of middle management in poor countries and that this cost inhibits the growth of the modern sector. We provide new empirical evidence using a database covering compensation for 300,000 middle managers working...

We examine aggregate productivity differences across nations using cross-country firm-level data and a quantitative model of production heterogeneity with distortions featuring operation decisions (selection) and productivity-enhancing investments (technology). Empirically, less developed...

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 paper examines the extent to which changes in working-age shares associated with population aging might slow economic growth in upcoming years. We first analyze the economic effects of changing working-age shares in a standard empirical growth model using country panel data from 1950-2015....

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,...

Despite the widespread economic shocks faced by children in developing countries, the factors that contribute to resilience remain poorly understood. In this paper, we present three novel facts on the development of noncognitive skills using a longitudinal dataset from Ethiopia. First, we...