Since the dawn of broadcasting, and especially in the past decade, Americans have turned their attention from local to more distant sources of news and entertainment. While the integration of media markets will raise the private welfare of many consumers, a globalized information and...

We analyze the behavior of game-show contestants who play a one-shot game called Friend or Foe. While it is a weakly dominant strategy not to cooperate, almost half the contestants on the show choose to play friend.' Remarkably, the behavior of contestants remains unchanged even when stakes are...

With substantial fixed costs of drug development, more common conditions can support more products. If additional pharmaceutical products are beneficial, they will attract greater consumption and promote better health, e.g. greater longevity. We ask how market size measured by condition...

Discrimination is notoriously difficult to document. Convincing tests for discrimination require good measures of the legitimate determinants of the outcome of interest, for example wages and productivity. While few contexts provide data adequate to the task of measuring discrimination, copious...

Recent literature notes that when quality is produced with fixed costs, a high quality firm can undercut its rival's prices and may find it profitable to invest more in quality as market size grows large. As a result, a market can remain concentrated even as it grows large. When quality is...

Free entry into markets with decreasing average costs and differentiated products can result in an inefficient number of firms and suboptimal product variety. Because new firms and products draw their customers in part from existing products, concentration can affect incentives to enter as well...

A necessary condition for justifying a policy such as publicly provided or subsidized low-income housing is that it has a real effect on recipients' outcomes. In this paper, we examine one aspect of the real effect of public or subsidized housing -- does it increase the housing stock? If...

The world's population is living longer but retiring earlier, and vast numbers of adults now spend as much as 1/3 of their lifetimes relying on public and private retirement benefits. Consequently, labor economists are interested in the forces driving retirement behavior, seeking to understand...

We study the tendency to connect to the Internet, and the online and offline shopping behavior of connected persons, to draw inferences about whether the Internet is a substitute or a complement for cities. We document that larger markets have more locally-targeted online content and that...

While some litigants frequently file cases, very few opposing pairs of litigants appear together frequently. Thus, there is little opportunity for litigants to develop trust or reputation. Lawyers, on the other hand, face each other frequently and participate in a community of lawyers that...