เปรียบเทียบวิธี

	ทฤษฎีฐานรากแบบคลาสสิก	ปรากฏการณ์วิทยา
สาขาวิชา	เชิงคุณภาพ	เชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1967	Early 20th century (Husserl ~1900–1913; Heidegger ~1927)
ผู้ริเริ่ม	Barney G. Glaser and Anselm L. Strauss	Edmund Husserl (transcendental); Martin Heidegger (hermeneutic)
ประเภท	Qualitative research method	Qualitative research approach
แหล่งต้นตำรับ	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine.	Moustakas, C. (1994). Phenomenological Research Methods. Sage. ISBN: 978-0803957466
ชื่อเรียกอื่น	Glaserian GT, CGT, original grounded theory, classic GT	Fenomenoloji, phenomenological inquiry, phenomenological analysis
ที่เกี่ยวข้อง	6	6
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.	Phenomenology is a qualitative research approach that investigates how participants live through and make sense of a specific experience. Rooted in the philosophy of Edmund Husserl and extended by Martin Heidegger, it aims to reveal the essential structures of lived experience rather than to measure or predict outcomes. The two most widely applied variants are Husserl's transcendental phenomenology, which seeks universal essences, and Heidegger's hermeneutic phenomenology, which emphasises interpretation within context.