Conducting Couple Interviews in Health Research: Methodological Lessons from Later-Life Caregiving Dyads

Background: Qualitative health research increasingly emphasizes relational and interactional processes in illness and caregiving; however, joint interview formats remain methodologically under-theorized. This article advances a relational and power-sensitive reconceptualization of the couple interview by conceptualizing the interview encounter itself as an interactional site in which caregiving relations become observable in real time rather than merely reported retrospectively. Methods: The article draws on seven in-home couple interviews with long-married older heterosexual couples in Germany, in which one partner provided long-term home-based care for the other. The analysis applies the Documentary Method to reconstruct jointly produced meanings, collective orientations, and the micro-interactional dynamics of the interview situation itself. Results: The analysis shows that couple interviews provide a distinctive methodological lens for studying dyadic caregiving by rendering co-narration, negotiated speaker roles, "we"-positioning, speaking-for-the-other, and embodied coordination analytically visible. Interactional asymmetries, interruptions, and situational role shifts thus emerge not only as challenges but as epistemic resources for reconstructing caregiving relationships and power dynamics. Based on this analysis, the article develops a three-part practice-oriented methodological toolkit comprising relational interviewing strategies, moderation practices, and systematic observation and documentation markers. Conclusions: By reframing the couple interview as an interactional event and specifying analytic markers and conduct strategies, this article makes an explicit methodological contribution to dyadic qualitative health research, particularly in sensitive later-life caregiving contexts.