Citizen science and Post-Normal Science’s extended peer community: Identifying overlaps by mapping typologies

At first sight, citizen science – the opening of scientific enterprise to a wider group of people, many of whom are not professionally engaged in research institutions, seems to align well with the concept of an extended peer community of the framework of Post-Normal Science (PNS). PNS is concerned with the social robustness of applied science, science-based professional consultancy, and scientific advice for policy in situations of high stakes, high uncertainties, and contested values. Creating opportunities for engagement of citizens in science seems an obvious fit – but is that true for all diverse forms that citizen science can take? Current citizen science includes many types of activities and practices. As a result, the role of the participants within a given scientific knowledge production practice and their relation to scientists vary. This paper leverages the PNS framework to gain a more in-depth understanding of different ways in which diverse citizen science initiatives can contribute to improving the science-policy interface and provide tool sets and approaches for extended peer review, or not. For this purpose, this paper develops an analytic framework drawing on several widely used typologies of citizen science. The twenty four activities and practices of citizen science that they cover are mapped onto different zones of problem solving strategies – applied science, professional consultancy, and post-normal science, which are presented in the literature on PNS in terms of uncertainty and decision stakes while also noticing their value conflicts and urgency. The analysis shows that each of the four zones of scientific activities can be associated with citizen science initiatives. We deduce that citizen science is not automatically imbued with transformative potential, but that this potential depends on the purpose and design of the citizen science initiative. Certain types of citizen science activities and approaches are more relevant to researchers and practitioners with an interest in PNS who are actively seeking to reconfigure the science-policy-practice interface than others. This analytic framework and consequent mapping can support PNS practitioners in identifying the type of citizen science activities and designing fit-for-purpose initiatives. Moreover, the mapping exercise conveys a more nuanced understanding of different possible dimensions, merits, and limitations of the extended peer community concept. Similarly, for citizen science researchers and practitioners, the mapping of typologies within the three zones of problem solving strategies can allow a better selection of citizen science activities for those purposes.