Although research has been performed on participatory mechanisms in science and technology such as brokering, little seems written on intermediary organizations, e.g. science museums, taking up and embedding a participation brokerage role and systemic factors influencing these. This paper presents a qualitative case study in which six different intermediary organizations developed their participation brokerage role in a European RRI project. We demonstrate how structuring factors in the project context, the intermediary organization and the broader systemic context influenced the participation brokerage role take-up and embedding. Our findings yield implications for future capacity building endeavors among participation brokers in the making.

To unravel how science museums can prepare citizens for reflection on research and innovation, this study evaluates a playful exhibit prototype, Opinion Lab (OL). The OL made children and parents reflect on synthetic biology (SB), supported by conversation exercises, citizen-narratives, and futuristic scenarios. We analysed 26 OL test sessions performed in NEMO science museum Amsterdam. The prototype appeared to support participants in opinion forming, counter-argument incorporation and extrapolation. Also, reflection on deeper questions such as `what is nature?' evoked understanding for alternative viewpoints. These findings show that playful exhibits, like the OL, potentially facilitate dialogue in science museums very well.