Technology is central to contemporary theories of social, cultural and economic change, yet its treatment is still predominantly one of technological determinism. This article examines the development of the social studies of science and technology (STS) and its critique of this dominant position. It provides an account of the principal concepts that inform the area, which emphasize that technology is a socio-technical product, patterned by the conditions of its creation and use. Technology and society, rather than being separate spheres, are mutually constituted. In this way, STS adds an important dimension missing in recent social theory, one that is sensitive to the materiality of social relations and the power of objects. Finally, the a...