手法を比較

	時系列テーマ分析	反射的テーマティック・アナリシス
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	2000s–2010s (formalized alongside longitudinal qualitative research methods)	2006 (seminal paper); explicitly named 'reflexive' from ~2019
提唱者	Built on Braun & Clarke (2006) thematic analysis; longitudinal adaptation developed across qualitative health and social science research communities	Virginia Braun & Victoria Clarke
種類	Qualitative analysis approach	Qualitative research method
原典	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	LTA, longitudinal TA, repeated thematic analysis, temporal thematic analysis	RTA, reflexive TA, Braun and Clarke thematic analysis, qualitative thematic analysis
関連	4	6
概要	Longitudinal Thematic Analysis (LTA) extends standard thematic analysis to data collected at multiple time points from the same participants or contexts. Rather than producing a single cross-sectional account, LTA maps how themes emerge, persist, transform, or disappear over time, enabling researchers to understand change, continuity, and process in qualitative terms. It is widely used in health, education, and social science research where lived experience unfolds over months or years.	Reflexive Thematic Analysis (RTA) is a widely used qualitative method for identifying, analysing, and interpreting patterns of shared meaning — called themes — across a dataset. Developed by Virginia Braun and Victoria Clarke, it is theoretically flexible, works across epistemological positions, and foregrounds the researcher's active, interpretive role rather than treating themes as features that simply emerge from data. It differs from older 'codebook' approaches by treating the analyst's subjectivity as a resource rather than a source of bias to be suppressed.