When I was a graduate student, I discovered that the <em>Journal of Economic Perspectives</em> embodied much of what I love about the field of economics: the clarity that pierces rhetoric to seek the core of a question; the rigor to identify the causal relationships, tradeoffs, and indeterminancies...

The U.S. Social Security Disability Insurance (DI) program has grown dramatically over the last 20 years in size and expense. This growth poses significant risks to the finances of the DI program and the broader Social Security system, and raises troubling questions as to whether the program is...

Workers and jobs are naturally heterogeneous and the quality of their interaction when paired is difficult to forecast. The Internet promises to open new channels for worker-firm communications. What are the consequences of this opening? I discuss three labor market features that may be altered:...

In this paper, I examine changes in international trade associated with the integration of low- and middle-income countries into the global economy. Led by China and India, the share of developing economies in global exports more than doubled between 1994 and 2008. One feature of new trade...