手法を比較

	比較オーラルヒストリー	比較事例研究
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1970s–1990s (oral history discipline; comparative application developed through 1990s)	1984 (Yin); 1995 (Stake)
提唱者	Alessandro Portelli, Paul Thompson (oral history tradition); comparative design adapted from cross-cultural qualitative research	Robert K. Yin; Robert E. Stake
種類	Qualitative comparative research design	Qualitative / mixed research design
原典	Portelli, A. (1991). The Death of Luigi Trastulli and Other Stories: Form and Meaning in Oral History. State University of New York Press. ISBN: 978-0791404997	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
別名	comparative oral history, cross-group oral history, comparative oral testimony, multi-site oral history	cross-case study, multi-site case study, multiple case study design, comparative case analysis
関連	6	4
概要	Comparative oral history collects and systematically compares first-person spoken testimonies from two or more distinct groups, communities, or historical contexts. The method blends the interpretive depth of oral history — privileging personal memory and narrative — with the analytical logic of comparative design, enabling researchers to identify both shared patterns and meaningful differences across the groups under study.	Comparative case study is a qualitative research design in which two or more bounded cases are studied in depth and then systematically compared to identify similarities, differences, and patterns across contexts. Rooted in Yin's replication logic and Stake's multiple case framework, it is particularly suited to questions that ask how or why a phenomenon unfolds differently — or similarly — across distinct settings, populations, or time periods.