เปรียบเทียบวิธี

	ทฤษฎีฐานรากแบบคลาสสิก	การวิจัยกรณีศึกษา
สาขาวิชา	เชิงคุณภาพ	เชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1967	1984 (seminal codification)
ผู้ริเริ่ม	Barney G. Glaser and Anselm L. Strauss	Robert K. Yin (systematised in Case Study Research, 1984)
ประเภท	Qualitative research method	Qualitative research design
แหล่งต้นตำรับ	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine.	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
ชื่อเรียกอื่น	Glaserian GT, CGT, original grounded theory, classic GT	Vaka Çalışması (Case Study), case study design, case study methodology
ที่เกี่ยวข้อง	6	5
สรุป	Classic Grounded Theory (CGT) is a systematic qualitative methodology for generating substantive theory from empirical data. Developed by Barney Glaser and Anselm Strauss in 1967, it uses iterative cycles of data collection, constant comparison, and memo writing to produce a core category and surrounding conceptual framework that explains a social or psychological process. Unlike its later variants, Glaserian CGT insists on emergence — theory must arise from data without forcing preconceived frameworks.	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.