手法を比較

	縦断的制度エスノグラフィ	縦断的ケーススタディ
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1987 (IE foundation); longitudinal applications from 1990s onward	1984–1990 (foundational methodological codification)
提唱者	Dorothy E. Smith (institutional ethnography); longitudinal extension by subsequent IE practitioners	Robert K. Yin (case study methodology); Andrew M. Pettigrew (longitudinal field research)
種類	Qualitative longitudinal research design	Qualitative research design
原典	Smith, D. E. (2005). Institutional Ethnography: A Sociology for People. AltaMira Press. ISBN: 978-0759106598	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
別名	longitudinal IE, time-extended institutional ethnography, longitudinal IE study, IE longitudinal design	longitudinal case research, panel case study, repeated case study, temporal case study
関連	6	6
概要	Longitudinal Institutional Ethnography (longitudinal IE) combines Dorothy Smith's sociology of standpoint — institutional ethnography — with repeated data collection over time to trace how institutional texts, relations, and ruling practices shape people's everyday lives across a temporal span. By revisiting the same participants, settings, or documents at multiple time points, it reveals how institutional coordination evolves, accumulates, or intensifies over weeks, months, or years.	A longitudinal case study is a qualitative research design that combines the in-depth, contextually rich focus of case study methodology with repeated data collection across multiple time points. Rather than capturing a single snapshot, it follows one or a small number of cases — an individual, group, organisation, or programme — over months or years to trace how processes, relationships, and meanings evolve. This design is well suited to questions about how and why things change, not merely what the state of affairs is at one moment.