手法を比較

	複数事例に基づくオーラルヒストリー ― 事例間証言研究	ライフヒストリー・リサーチ
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1970s–1990s (convergence of oral history and case study traditions)	Early 20th century (Thomas & Znaniecki 1918–1920); systematised as interview method in the 1990s
提唱者	Alessandro Portelli (oral history theory); Robert K. Yin (multiple case logic)	William I. Thomas and Florian Znaniecki (sociological tradition); Robert Atkinson (interview method)
種類	Qualitative multi-case research design	Qualitative research method
原典	Portelli, A. (1997). The Battle of Valle Giulia: Oral History and the Art of Dialogue. University of Wisconsin Press. ISBN: 978-0299153045	Atkinson, R. (1998). The Life Story Interview. Sage. ISBN: 978-0761904496
別名	multi-case oral history, comparative oral history, cross-case oral history, multi-site oral history	life history method, life-history interview, biographical research, personal narrative research
関連	6	6
概要	Multiple case-based oral history is a qualitative research design that embeds oral history interviews within a multiple-case framework. Rather than collecting testimonies from a single community or site, the researcher deliberately selects two or more distinct cases — communities, cohorts, organisations, or geographic sites — gathers in-depth oral testimonies within each, and then conducts systematic cross-case comparison to identify both shared and divergent historical experiences.	Life history research is a qualitative method that captures the full arc of an individual's life — or a significant portion of it — through extended biographical interviewing and analysis of personal documents. Rooted in early Chicago School sociology, the method treats each life story as a window into broader social, cultural, and historical forces. The researcher and participant co-construct a narrative account that illuminates how personal experience is shaped by, and in turn shapes, wider social structures and processes.