The public's engagement in museum projects is widely encouraged. However, public participation may also passively impact the relationship of museum and their publics if any existing conflicts cannot be identified and resolved. This paper organised a group of public participants to use Plurality Voting Sheets (PVSs) and Idea Rating Sheets (IRSs) in a museum design project, in order to find out: (1) Which method can generate more in-depth judgements? and (2) Which method can reveal more potential conflicts? The proposed project was the curation of a dinosaur exhibition at the Nottingham Natural History Museum, Wollaton Hall. The results prove that, firstly, IRSs can generate a higher quantity of in-depth judgement than PVSs, and secondly, IRSs can disclose more conflicts than PVSs do. Generally, it is arguable that the performance of IRSs in the judgement-making stage is better than that of PVSs. However, IRSs still require more testing in public participation situations. [ABSTRACT FROM AUTHOR]