Abstract
The sharing of research data is now mandated by some funders to encourage openness and integrity in science, to ensure efficient use of research funds, and to provide training resources. Although data sharing has a long history in some parts of science, the full range of possibilities and challenges it offers are only now becoming apparent in the social sciences. This article (a) examines what may be entailed in sharing documented data, (b) provides a historical perspective on data sharing, (c) describes some of the creative and successful data-sharing relationships that have occurred in the social sciences, and (d) discusses some of the main concerns of social scientists with respect to sharing their data and how these concerns might be resolved.