手法を比較

	選択的コーディング	ケーススタディリサーチ（Case Study Research）	コンテンツ分析	ナラティブ分析
分野	質的手法	質的手法	質的手法	質的手法
系統	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1967 (Glaser & Strauss); refined 1990 (Strauss & Corbin)	1984 (seminal codification)	Systematised through Krippendorff's methodology work; 4th edition 2018	1967 (foundational); 2008 (canonical handbook)
提唱者	Barney Glaser & Anselm Strauss (classic GT); systematised by Anselm Strauss & Juliet Corbin; constructivist variant by Kathy Charmaz	Robert K. Yin (systematised in Case Study Research, 1984)	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	Catherine Kohler Riessman (seminal synthesis, 2008); roots in Labov & Waletzky (1967)
種類	Qualitative research method	Qualitative research design	Qualitative / mixed-method research technique	Qualitative interpretive method
原典	Strauss, A., & Corbin, J. (1990). Basics of Qualitative Research: Grounded Theory Procedures and Techniques. Sage. ISBN: 978-0803932975	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Riessman, C.K. (2008). Narrative Methods for the Human Sciences. Sage.
別名	focused coding, theoretical integration, GT selective coding, core category coding	Vaka Çalışması (Case Study), case study design, case study methodology	İçerik Analizi, systematic content coding, quantitative content analysis	narrative inquiry, life history analysis, biographical research, Anlatı Analizi (Narrative Analysis)
関連	6	5	5	6
概要	Selective coding is the third and final analytic phase of grounded theory, in which the researcher systematically identifies one central or core category that integrates all other major categories developed during open and axial coding. The outcome is a coherent, data-grounded substantive theory that explains the main social process or phenomenon under study. First formalized by Glaser and Strauss (1967) and later elaborated by Strauss and Corbin (1990) and Kathy Charmaz (2006), selective coding transforms fragmented mid-level categories into a unified theoretical account.	Case study research is a qualitative research design that investigates a specific phenomenon, individual, group, organisation, or event in depth within its real-world context. Systematised by Robert K. Yin in 1984, it supports single-case and multiple-case designs and draws on multiple data sources — interviews, observation, documents, and artefacts — to build a rich, contextualised account of a bounded unit.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	Narrative analysis is a qualitative research method, synthesised canonically by Catherine Kohler Riessman (2008), that examines how individuals storise their lived experiences and construct meaning through the telling. Drawing on life history, biographical, and narrative inquiry traditions, it treats the story itself — not just its content — as the unit of analysis, attending to temporal sequence, plot structure, and the social context in which a narrative is produced.