手法を比較

	オーラル・ヒストリー	ケーススタディリサーチ（Case Study Research）
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1948 (modern disciplinary form); broader roots in 19th-century folklore and anthropology	1984 (seminal codification)
提唱者	Allan Nevins (Columbia University Oral History Project, 1948); earlier roots in folk-life and anthropological fieldwork	Robert K. Yin (systematised in Case Study Research, 1984)
種類	Qualitative research method	Qualitative research design
原典	Ritchie, D. A. (2003). Doing Oral History: A Practical Guide (2nd ed.). Oxford University Press. ISBN: 978-0195176957	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
別名	life history interview, oral testimony, spoken history, oral narrative research	Vaka Çalışması (Case Study), case study design, case study methodology
関連	6	5
概要	Oral history is a qualitative research method that collects, preserves, and interprets first-person spoken accounts of past events, experiences, and social processes. By recording in-depth interviews with individuals who witnessed or participated in historical events, oral historians document perspectives that written records often exclude. The method bridges historical scholarship and social science, treating the narrator's memory, subjectivity, and voice as primary evidence rather than as limitations to be corrected.	Case study research is a qualitative research design that investigates a specific phenomenon, individual, group, organisation, or event in depth within its real-world context. Systematised by Robert K. Yin in 1984, it supports single-case and multiple-case designs and draws on multiple data sources — interviews, observation, documents, and artefacts — to build a rich, contextualised account of a bounded unit.