Three important issues have recently attracted researchers to study the economics of disability. First with the availability of sophisticated "data sets," it has become possible to conduct highly quantative investigations of the relative economic impacts of various types of disabling health problems. Second, the passage of the Americans with Disabilities Act in 1991, and the subsequent implementation of its employment provisions, focused national attention on the continuing scarcity of employment opportunities for disabled persons. The tools of analysis that have been developed over the past...