เปรียบเทียบวิธี

	Longitudinal Interpretive Phenomenological Analysis (L-IPA)	ทฤษฎีฐานราก
สาขาวิชา	เชิงคุณภาพ	การวิจัยเชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	2000s–2010s (IPA from mid-1990s; longitudinal variant formalised ~2009–2014)	1967
ผู้ริเริ่ม	Jonathan A. Smith and colleagues; longitudinal extension developed by Smith, Flowers, and Larkin	Barney Glaser and Anselm Strauss
ประเภท	Qualitative research design and analysis approach	Method
แหล่งต้นตำรับ	Smith, J. A., Flowers, P., & Larkin, M. (2009). Interpretive Phenomenological Analysis: Theory, Method and Research. Sage. ISBN: 978-1412908344	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
ชื่อเรียกอื่น	L-IPA, longitudinal IPA, repeated-interview IPA, temporal IPA	GT, Grounded Theory Approach
ที่เกี่ยวข้อง	4	3
สรุป	Longitudinal Interpretive Phenomenological Analysis (L-IPA) extends the IPA tradition by interviewing the same participants at multiple time points, allowing researchers to trace how the meaning of a lived experience evolves over time. Grounded in phenomenology and hermeneutics, L-IPA preserves idiographic depth at each wave while adding a temporal dimension that cross-sectional IPA cannot provide. It is used widely in health psychology, illness adjustment studies, and any domain where experience unfolds across a significant time span.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.