How will the emergence of ChatGPT and other forms of artificial intelligence (AI) affect the skill premium? To address this question, we propose a nested constant elasticity of substitution production function that distinguishes among three types of capital: traditional physical capital...

In the presence of markup differences, externalities and other social considerations, the equilibrium direction of innovation can be systematically distorted. This paper builds a simple model of endogenous technology, which generalizes existing comparative static results and characterizes...

This study exploits experimental variation in parent human capital (early-life school-based deworming) and a shock to schooling (extended Covid closures) to estimate how these factors interact in the production of child human capital within a sample of 3,500 Kenyan 3-8 year olds. Parents with...

We bring to bear a novel dataset covering the employment history of about 450 million individuals from 180 countries to study return migration and the impact of skilled international migration on human capital stocks across countries. Return migration is a common phenomenon, with 38% of skilled...

How should industrial policies be directed to reduce distortions and foster economic development? We study this question in a multi-sector model with technology adoption, where the production of goods and modern technologies features rich network structures. We provide simple formulas for the...

Support from local citizens is important for the scale-up of renewable energy. We investigate the impact of utility-scale wind and solar parks on employment, GDP and public finances in Brazilian municipalities using a difference-in-differences design with matching. We find a positive employment...

David Ricardo initially believed machinery would help workers but revised his opinion, likely based on the impact of automation in the textile industry. Despite cotton textiles becoming one of the largest sectors in the British economy, real wages for cotton weavers did not rise for decades. As...

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...

A relatively mild form of government failure - for example, bureaucrats can count but do not differentiate quality - can significantly affect the efficacy of industrial policy. We investigate this idea in the context of China's largest pro-innovation industrial policy using a structural model....

Recent evidence suggests the U.S. business environment is changing, with rising market concentration and markups. The most prominent and extensive evidence backs out firm-level markups from the first-order conditions for variable factors. The markup is identified as the ratio of the variable...