手法を比較

	マルチソース深層インタビュー	複数ソース・フォーカス・グループ ― 多様なステークホルダーからの質的データ収集
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (formalized in qualitative inquiry literature)	1980s–1990s
提唱者	Grounded in qualitative traditions consolidated by Patton, Lincoln & Guba, and others	Developed from focus group methodology; formalized in applied social research (Krueger, Morgan, and colleagues)
種類	Qualitative data collection technique	Qualitative data collection technique
原典	Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711	Krueger, R. A., & Casey, M. A. (2015). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage. ISBN: 978-1483365244
別名	multi-informant in-depth interview, multi-perspective qualitative interview, multiple-source IDI, multi-stakeholder in-depth interview	multi-stakeholder focus group, multiple-source focus group, cross-source focus group, MSFG
関連	5	4
概要	The multi-source in-depth interview is a qualitative data collection strategy in which extended, open-ended interviews are conducted with participants drawn from two or more distinct source groups — such as providers and clients, managers and staff, or experts and laypeople. Collecting data across diverse informant positions enriches description and enables the researcher to examine a phenomenon from multiple vantage points within a single study.	The multi-source focus group method extends the standard focus group design by deliberately recruiting participants from two or more distinct stakeholder groups — for example, clinicians and patients, teachers and students, or managers and frontline staff. Separate sessions are held for each source group using a shared discussion protocol, and the resulting data are analyzed both within each group and across groups to reveal convergences, tensions, and perspectives that no single-source design could uncover.