手法を比較

	Multiple Case-Based Classic Grounded Theory	定性比較分析法
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1967 (foundational); multi-case adaptation developed through 1970s–1990s	1967
提唱者	Barney G. Glaser and Anselm L. Strauss (foundational); Glaser extended for comparative multi-case contexts	Barney G. Glaser and Anselm L. Strauss
種類	Qualitative inductive theory-generation design	Qualitative research method
原典	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine. ISBN: 978-0202302607	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine.
別名	multi-case CGT, classic GT with multiple cases, comparative grounded theory, Glaserian multi-case grounded theory	CCM, constant comparison, constant comparative analysis, comparative constant analysis
関連	6	6
概要	Multiple case-based classic grounded theory (CGT) extends Glaser and Strauss's original inductive framework by grounding theory development simultaneously across two or more purposefully selected cases. Rather than studying a single site or participant group, the researcher treats each case as a distinct analytic unit while using the constant comparative method to draw cross-case theoretical insights. The goal is the same as in all classic GT: emergence of a substantive theory that explains the main concern of participants — but the multi-case structure broadens the conceptual base and supports more robust theoretical abstraction.	The Constant Comparative Method (CCM) is a systematic qualitative analysis procedure in which every newly coded incident is immediately compared with all previously coded incidents in the same category. Introduced by Glaser and Strauss in their 1967 grounded theory framework, CCM drives theory development by cycling continuously between data collection and analysis, progressively refining categories until theoretical saturation is reached. Though closely associated with grounded theory, the method has been widely adopted as a stand-alone analytic strategy across qualitative traditions.