This paper provides evidence of the long-run effects of a permanent increase in agricultural productivity on conflict. We construct a newly digitized and geo-referenced dataset of battles in Europe, the Near East and North Africa covering the period between 1400 and 1900 CE. For variation in...

We explore the impact of COVID-19 on employee's digital communication patterns through an event study of lockdowns in 16 large metropolitan areas in North America, Europe and the Middle East. Using de- identified, aggregated meeting and email meta-data from 3,143,270 users, we find, compared to...

Recent theories of the Long Divergence between Middle Eastern and Western European economies focus on Middle Eastern (over-)reliance on religious legitimacy, use of slave soldiers, and persistence of restrictive proscriptions of religious (Islamic) law. These theories take as exogenous the...

In this paper, I summarize the results of empirical studies in the areas of schooling and health, public programs and infant mortality, and government regulation of teenage smoking. My review is selective and is based on my own research. It is neutral with respect to the question of whether the...

This paper develops a simple theoretical framework to study a set of regions, each with its own regional government, who share a union or central government. These governments must decide whether to implement or discard a large number of projects that produce local benefits for the region that...

Standard models of hierarchy assume that agents and middle managers are better informed than principals about how to implement a particular task. We estimate the value of the informational advantage held by supervisors (middle managers) when ministerial leadership (the principal) introduced a...

What are the incentives faced by local officials in China? Without democratic institutions, there is no mechanism for local residents to exercise "voice". Given the hukou registration system, local residents have little opportunity to threaten "exit" if they are unhappy with local taxes and...

Heavily subsidizing essential health products through existing health infrastructure has the potential to substantially decrease child mortality in sub-Saharan Africa. There is, however, widespread concern that poor governance and in particular limited accountability among health workers...

A fundamental problem for economic development is that most poor countries have 'weak state' which are incapable or unwilling to provide basic public goods such as law enforcement, order, education and infrastructure. In Africa this is often attributed to the persistence of 'indirect rule' from...