This note lays out the basic Susceptible-Infected-Recovered (SIR) epidemiological model of contagion, with a target audience of economists who want a framework for understanding the effects of social distancing and containment policies on the evolution of contagion and interactions with the...

Were high import tariffs somehow related to the strong U.S. economic growth during the late nineteenth century? This paper examines this frequently mentioned but controversial question and investigates the channels by which tariffs could have promoted growth during this period. The paper shows...

The history of the twentieth century can be summarized excessively briefly in five propositions: First, that the history of the twentieth century was overwhelmingly economic history. Second, that the twentieth century saw the material wealth of humankind explode beyond all previous imagining....

African- American motorist in the United States are much more likely than white motorists to have their car searched by police checking for illegal drugs and other contraband. The courts are faced with the task of deciding on the basis of traffic-search data whether police behavior reflects a...

Retirement saving accounts, particularly employer-provided 401(k) plans rapidly in the last decade. More than forty percent of workers are currently eligible for these" plans, and over seventy percent of eligibles participate in these plans. The substantial and" ongoing accumulation of assets in...

We estimate the impact of piped water and sewers on property values in mid-19th century Chicago. The cost of sewer construction depends sensitively on imperceptible variation in grade, and such variations in grade delay water and sewer service to part of the city. This delay provides...

Why was the Industrial Revolution successful at generating sustained growth? Some have argued that there was a fundamental change in the way that new technology was developed during this period, but evidence for this argument remains largely anecdotal. This paper provides direct quantitative...

This paper estimates returns to scale for manufacturing industries around the turn of the twentieth century in the United States by exploiting an industry-city panel data for the years 1880-1930. We estimate decreasing returns to scale on average over the period, contrary to most of the existing...

This paper studies the economic consequences of the West's foray into China after the Opium War (1839-42), when Western colonial influence was introduced in dozens of so-called treaty ports. We document a turnaround during the 19th century in the nature of China's capital markets. Whereas before...

In 1960, South Korea's exports were about 1 percent of GDP, and the country's ability to import depended almost entirely on US aid. After changing its foreign exchange and trade policies in the mid-1960s, Korea saw a surge in exports to more than 10 percent of GDP by the end of the decade. What...