เปรียบเทียบวิธี

	การทฤษฎีฐานรากแบบคลาสสิกตามแนวแกนเวลา	ทฤษฎีกราวด์เดดเชิงโครงสร้างนิยมแบบต่อเนื่อง
สาขาวิชา	เชิงคุณภาพ	เชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1967 (classic GT); longitudinal application developed from 1980s onward	2006 (Charmaz's constructivist GT); longitudinal application from ~2000s onward
ผู้ริเริ่ม	Barney G. Glaser and Anselm L. Strauss (classic GT); longitudinal extension by later methodologists	Kathy Charmaz (constructivist GT); extended to longitudinal designs by qualitative longitudinal researchers
ประเภท	Qualitative longitudinal research design	Qualitative research design and analysis approach
แหล่งต้นตำรับ	Glaser, B. G., & Strauss, A. L. (1967). The Discovery of Grounded Theory: Strategies for Qualitative Research. Aldine. ISBN: 978-0202302607	Charmaz, K. (2006). Constructing Grounded Theory: A Practical Guide Through Qualitative Analysis. Sage. ISBN: 978-0761973522
ชื่อเรียกอื่น	Longitudinal CGT, Glaserian longitudinal grounded theory, classic GT longitudinal design, longitudinal substantive theory building	longitudinal CGT, constructivist GT longitudinal, longitudinal Charmaz grounded theory, temporal constructivist grounded theory
ที่เกี่ยวข้อง	6	5
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.	Longitudinal Constructivist Grounded Theory combines Kathy Charmaz's constructivist variant of grounded theory — which foregrounds the co-construction of meaning between researcher and participants — with a multi-wave, time-extended data collection design. Rather than capturing a single snapshot, the researcher returns to the same participants across two or more time points, allowing the emergent theory to track how processes, identities, and social meanings develop, shift, or stabilise over time.