手法を比較

	Longitudinal Interpretive Phenomenological Analysis (L-IPA)（縦断的解釈現象学分析）	Grounded Theory
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	2000s–2010s (IPA from mid-1990s; longitudinal variant formalised ~2009–2014)	1967
提唱者	Jonathan A. Smith and colleagues; longitudinal extension developed by Smith, Flowers, and Larkin	Barney Glaser and Anselm Strauss
種類	Qualitative research design and analysis approach	Method
原典	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.
別名	L-IPA, longitudinal IPA, repeated-interview IPA, temporal IPA	GT, Grounded Theory Approach
関連	4	3
概要	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.