LAUSR

Abstract This study examined the social representation (SR) of nanotechnologies and its relationships with those of science and technology. It aimed to understand the role of pre-existing and neighbouring forms of shared knowledge in orienting the way laypeople autonomously develop ideas about an unfamiliar issue, and related implications for its perceived risks and public acceptance or rejection. The study involved 489 Italian participants, stratified according to gender, age and education level. They completed an ad-hoc questionnaire with multiple free association tasks to the word-stimuli nanotechnologies, science and technology, and close-ended questions to gauge ‘familiarity’ levels with nanotechnologies and ‘engagement’ in nanotechnologies through media. The results suggested the presence of a rather shared and organised SR of nanotechnologies whose content is cautiously enthusiastic. The biomedical domain seems to be the most easily accepted field of application for nanotechnologies, indicating a ‘preferential channel’ through which they could be more welcome and trusted. Concerning inter-representation relationships, comparisons among SRs identified a strong connection among these three objects, indicating the existence of a coherent representation system where the SR of nanotechnologies is nested in those of science and technology, which, in turn, are in a reciprocal relationship. Fine-grained comparisons allowed for grasping further insights. The results showed that the SR of nanotechnologies is the least enthusiastic, highlighting critical voices among laypeople, although peripherally. Specifically, it presents elements of perceived risks and rejection on one hand, and elements indicating a detached approach in which individuals struggle to detect potentialities and advantages on the other, contrary to what has been found for science and technology at large.