This article draws attention to struggles inherent in discourse about the meaning of participation in a Flemish participatory technology assessment (pTA) on nanotechnologies. It explores how, at the project’s outset, key actors (e.g., nanotechnologists and pTA researchers) frame elements of the process like ‘the public’ and draw on interpretive repertoires to fit their perspective. The examples call into question normative commitments to cooperation, consensus building, and common action that conventionally guide pTA approaches. It is argued that pTA itself must reflect (...) an awareness of competing interests and perspectives inherent in the discourse associated with the meaning of ‘participation’ if it is to incite action beyond vested interests and ensure genuine mutual learning. (shrink)

Public “upstream engagement” and other approaches to the social control of technology are currently receiving international attention in policy discourses around emerging technologies such as nanotechnology. To the extent that such approaches hold implications for research and development (R&D) activities, the distinct participation of scientists and engineers is required. The capacity of technoscientists to broaden the influences on R&D activities, however, implies that they conduct R&D differently. This article discusses the possibility for more reflexive participation by scientists and engineers in (...) the internal governance of technology development. It reviews various historical attempts to govern technoscience and introduces the concept of midstream modulation, through which scientists and engineers, ideally in concert with others, bring societal considerations to bear on their work. (shrink)