เปรียบเทียบวิธี

	การทฤษฎีฐานรากแบบคลาสสิกตามแนวแกนเวลา	ทฤษฎีฐานรากแบบคลาสสิก
สาขาวิชา	เชิงคุณภาพ	เชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1967 (classic GT); longitudinal application developed from 1980s onward	1967
ผู้ริเริ่ม	Barney G. Glaser and Anselm L. Strauss (classic GT); longitudinal extension by later methodologists	Barney G. Glaser and Anselm L. Strauss
ประเภท	Qualitative longitudinal research design	Qualitative research method
แหล่งต้นตำรับ	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.
ชื่อเรียกอื่น	Longitudinal CGT, Glaserian longitudinal grounded theory, classic GT longitudinal design, longitudinal substantive theory building	Glaserian GT, CGT, original grounded theory, classic GT
ที่เกี่ยวข้อง	6	6
สรุป	Longitudinal Classic Grounded Theory applies Glaser and Strauss's original discovery-oriented grounded theory method across two or more data collection waves separated by time. The approach tracks how social processes, behaviors, and conceptual categories evolve, allowing the researcher to build a substantive theory that captures change and continuity rather than a single static snapshot of a phenomenon.	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.