‘Shade trees for the next generation’: constructing the promissory publics of prospective cohort studies

Epidemiological cohort studies are a central research design in public health which appeal to, and can reinforce, specific ideas of the nation, sociality and the ‘good’ citizen. The concept of publics, the sociology of expectations and a co-productionist framework provide the theoretical frame to investigate how popular representations of two cohort studies, German National Cohort and UK Biobank, attempt to enrol a concerned public. By constructing promissory publics, cohort studies produce morally charged visions of health research and civic engagement as normative social practices. Promissory publics straddle the population and the citizen, the nation and the region, the future and the past, thus adding nuance to existing conceptual approaches. The publics of cohort studies are bolstered by the care practices of predominantly female staff, functioning as a performance of social recognition in lieu of an immediate beneficiary of research participation. Through these processes, popular representations of cohort studies intervene into much broacher visions of society and its anticipated futures, co-producing socially dominant and morally charged projections of sociality as well as health. The production of such publics thereby draws boundaries between members of the public and those practices enacted as endangering civic values. As such, cohort studies may have much broader socio-cultural ramifications that could reinforce old or reintroduce new lines of inclusion or exclusion.