The value of qualitative longitudinal research for researchers and policy‐makers: Lessons learnt from exploring long‐term impacts of flooding

Abstract This paper offers reflections about the use of a longitudinal qualitative research design in a project which explored the long term impacts of flooding in two communities in North‐East Scotland. A temporal turn in the social sciences has raised the profile of longitudinal qualitative approaches, research whose diachronic framing allows trajectories and nuanced understandings of change to emerge. With reference to research which utilised a planned prospective longitudinal design, we offer reflections on methodological and project management ‘lessons learnt’ from undertaking a longitudinal qualitative study. Our experiences highlighted the importance of: (i) participant recruitment processes, including a need to ‘oversample’ to accommodate anticipated attrition rates; (ii) developing and sustaining a relationship between participants and researchers; (iii) reporting interim findings to participants, the funder and flood risk management stakeholders via a project Steering Group in particular; and (iv) agreeing a regular reporting schedule which allowed the funder and stakeholders access to findings during the lifetime of the project which, in turn, allowed impact to be generated before the final report was presented. In sharing our experiences our intention is twofold: to open a debate in human geography about how longitudinal qualitative research could be used more widely, in natural hazards research, rural community change and other research areas; and to illustrate that longitudinal qualitative research generates insights that can contribute to evidence‐based policy development, implementation and evaluation.