While approaches to the analysis of multiple perspectives have been explored, the earlier stage of arranging fieldwork with multiple family members has received relatively little reflection within the literature. Drawing on data from a qualitative study exploring family communication about sex and sexuality, this paper examines parents' and children's accounts of how their families became involved in the research. A key finding notes how dynamics of parent–child communication about sex were played out through families' interactions concerning research participation. Particular focus is paid to the ways in which information about the study was mediated between parents and children and also individuals' differential agendas for participation. Evidence of the persuasive practices of some parents to engage their families in research underlines the importance of accessing all potential participants directly. The paper concludes by highlighting the importance of sensitisation to interactions between family members themselves when engaging families in research.