Longitudinal Institutional Ethnography

Standard longitudinal ethnography tracks cultural change in a community or setting over time, often focusing on evolving practices, identities, or relationships. Longitudinal IE is specifically organized around a 'problematic' — a tension in people's everyday work — and traces how institutional texts, policies, and ruling relations that coordinate that work change over time. The analytic focus stays on the documentary and organizational mechanisms of coordination, not on cultural meaning more broadly.

There is no fixed minimum, but at least two waves separated by a meaningful institutional event (a policy change, a restructuring, a new documentation system) are necessary for the longitudinal dimension to yield genuine analytic traction. Studies with three or more waves can trace trajectories rather than just before/after contrasts. The timing of waves should be driven by the institutional calendar rather than arbitrary intervals.

Not necessarily. Longitudinal IE can follow the same individuals, or it can follow the institution — interviewing whoever occupies a particular position at each wave. The choice depends on the problematic: if the research is about how specific people accumulate experience within ruling relations, panel tracking of individuals is appropriate; if it is about how a role or organizational position is coordinated differently over time, positional tracking is sufficient.

Yes, it is particularly well suited to examining how a policy's textual and coordinative mechanisms are actually implemented and experienced over time, which differs from outcome evaluation. Longitudinal IE reveals the institutional work that policy implementation requires, the gaps between policy intent and coordinative practice, and how those gaps shift as the policy matures or is revised.

First, document why participants left — departure itself may be part of the institutional story. Second, consider whether positional rather than individual tracking better serves the problematic. Third, be transparent in reporting about how attrition affects the comparability of waves. Supplementing with new participants who occupy the same institutional position can help maintain analytic coverage of the problematic across waves.