This paper presents new evidence on the critical role of lower-level organizational leaders. Unlike top managers, frontline leaders are essential for implementing organizational strategies by maintaining team cohesion when shirking is profitable for workers. We study this in the context of the Union...
Does industrial concentration shape the life and death of cities? We identify settlements from historical maps of England and Wales (17901820), isolate exogenous variation in their late 19th-century size and industrial concentration, and estimate the causal impact of size and concentration on later...
This paper analyzes 630,000 paintings from 1400 onward to uncover how visual art reflects its socioeconomic context. We develop a learning algorithm to predict nine basic emotions conveyed in each painting and isolate a context effectthe emotional signal shared across artworks created in the same...
We provide new evidence on the income distributional consequences of trade using the New World Grain Invasion in the 19th Century and variation in agroclimatic suitability for wheat across locations within England and Wales. We show that this large-scale agricultural trade shock led to structural...
This paper investigates the reversibility of the effects of transport infrastructure investments, based on a programme that removed much of the rail network in Britain during the mid-20th Century. We find that a 10% loss in rail access between 1950 and 1980 caused a persistent 3% decline in local...
This paper estimates the value of urban trees and shows their ability to moderate temperatures during heatwaves and reduce energy consumption. The empirical strategy exploits an ecological catastrophethe Emerald Ash Borer infestation in Torontoto isolate exogenous variation in neighborhood tree...
We identify negative spillovers exerted by large, successful manufacturing plants on other local production facilities in China. A short-lived alliance between the U.S.S.R. and China led to the construction of 150 "Million-Rouble plants" in the 1950s. Our identification strategy exploits the...
We provide theory and evidence on the contribution of slavery wealth to Britains economic development prior to the abolition of slavery in 1833. We combine data on individual slaveholders from compensation records, an exogenous source of variation in slavery wealth from weather-induced shocks to...
How do communication costs affect the production of new ideas and inventions? To answer this question, we study the introduction of the Uniform Penny Post in Great Britain in 1840. This reform replaced the previous system of expensive distance-based postage fees with a uniform low rate of one penny...
This article reviews recent literature using insights from history to answer central questions in urban economics. This area of research has seen rapid growth in the past decade, thanks to new technologies that have made available increasingly rich data stretching far back in time. The focus is to...
Using newly-constructed spatially-disaggregated data for London from 1801-1921, we show that the invention of the steam railway led to the first large-scale separation of workplace and residence. We show that a class of quantitative urban models is remarkably successful in explaining this...
This paper studies the role of leaders in the social movement against slavery that culminated in the U.S. Civil War. Our analysis is organized around a natural experiment: leaders of the failed German revolution of 1848-49 were expelled to the U.S. and became anti-slavery campaigners who helped...
Instrumental variables (IV) are a common means to identify treatment effects. But standard IV methods do not allow us to unpack the complex treatment effects that arise when a treatment and its outcome together cause a second outcome of interest. For example, IV methods have been used to show that...
Shale gas has grown to become a major new source of energy in countries around the globe. While its importance for energy supply is well recognized, there has also been public concern over potential risks such as damage to buildings and contamination of water supplies caused by geological...
We identify the causal effect of trade-integration with China and Eastern Europe on voting in Germany from 1987 to 2009. Looking at the entire political spectrum, we find that only extreme-right parties respond significantly to trade integration. Their vote share increases with import competition...
We identify the impact of local firm concentration on incumbent performance with a quasi natural experiment. When Germany was divided after World War II, many firms in the machine tool industry fled the Soviet occupied zone to prevent expropriation. We show that the regional location decisions of...