手法を比較

	複数の事例に基づく解釈現象学分析	複数事例研究
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1996 (IPA); multi-case design consolidated circa 2009	1980s–1990s (Yin's first edition 1984; Stake's collective case study concept 1995)
提唱者	Jonathan A. Smith (IPA); multi-case extension elaborated by Smith, Flowers & Larkin	Robert K. Yin (systematic replication logic); Robert E. Stake (naturalistic/collective case tradition)
種類	Qualitative interpretive research design	Qualitative research method
原典	Smith, J. A., Flowers, P., & Larkin, M. (2009). Interpretive Phenomenological Analysis: Theory, Method and Research. Sage. ISBN: 978-1412908344	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
別名	multi-case IPA, multiple-case IPA, cross-case interpretive phenomenological analysis, IPA multiple case design	comparative case study, multi-site case study, collective case study, cross-case analysis
関連	5	6
概要	Multiple case-based interpretive phenomenological analysis (multi-case IPA) applies the close, idiographic reading of IPA to a set of purposively selected cases, conducting detailed within-case analysis before systematically comparing themes across cases. The approach retains IPA's commitment to understanding individual lived experience in depth while allowing the researcher to identify convergent and divergent patterns across structurally similar situations or participant groups.	Multiple-case study design investigates two or more bounded real-world cases using the same research protocol, then compares findings across cases to identify patterns, contrasts, and explanatory insights that a single case could not produce. Developed primarily through Robert Yin's replication logic and Robert Stake's collective case tradition, the approach is particularly powerful when a researcher needs to determine whether a phenomenon occurs under varied conditions or to test an emerging theoretical explanation against rival contexts.