When firms and people are located near each other in cities and in industrial clusters, they benefit in various ways, including by reducing the costs of exchanging goods and ideas. One might assume that these benefits would become less important as transportation and communication costs fall....

Not-for-profit organizations play a critical role in the American economy. In health care, education, culture, and religion, we trust not-for-profit firms to serve the interests of their donors, customers, employees, and society at large. We know that such firms don't try to maximize profits,...

Warfare is enormously destructive, and yet countries regularly initiate armed conflict against one another. Even more surprisingly, wars are often quite popular with citizens who stand to gain little materially and may lose much more. This paper presents a model of warfare as the result of...

Economists are quick to assume opportunistic behavior in almost every walk of life other than our own. Our empirical methods are based on assumptions of human behavior that would not pass muster in any of our models. The solution to this problem is not to expect a mass renunciation of data...

Prospect theory, loss aversion, mental accounts, hyperbolic discounting, cues, and the endowment effect can all be seen as examples of situationalism - the view that people isolate decisions and overweight immediate aspects of the situation relative to longer term concerns. But outside of the...

The three largest cities in colonial America remain at the core of three of America's largest metropolitan areas today. This paper asks how Boston has been able to survive despite repeated periods of crisis and decline. Boston has reinvented itself three times: in the early 19th century as the...

The economic convergence of American regions has greatly slowed, and rates of long-term non-employment have even been diverging. Simultaneously, the rate of non-employment for working age men has nearly tripled over the last 50 years, generating a terrible social problem that is...

Urbanization is undoubtedly a key driver of development -- cities provide the national platform for prosperity, job creation, and poverty reduction. But urbanization also poses enormous challenges that one is familiar with: congestion, air pollution, social divisions, crime, the breakdown of...