Abstract

The “participatory turn” cutting across technical approaches for appraising environment, risk, science, and technology has been accompanied by intense debates over the desired nature, extent, and quality of public engagement in science. Burgeoning work evaluating the effectiveness of such processes and the social study of science in society more generally is notable, however, for lacking systematic understanding of the very actors shaping these new forms science-society interaction. This paper addresses this lacuna by drawing on United Kingdom based in-depth empirical research that made space for participatory appraisal experts to reflect on effective practice and novel questions of competence, expertise, and citizen-specialist relations within analytic-deliberative processes. Emerging practitioner principles warn that existing participatory models have not sufficiently considered constructivist perspectives on knowledge, analysis, and deliberation. Effective participatory appraisal under uncertainty needs to guard against the “technocracy of participation” by opening up to diversity, difference, antagonism, and uncertainties/indeterminacies.