手法を比較

	時系列テーマ分析	Thematic Analysis
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	2000s–2010s (formalized alongside longitudinal qualitative research methods)	2006
提唱者	Built on Braun & Clarke (2006) thematic analysis; longitudinal adaptation developed across qualitative health and social science research communities	Virginia Braun and Victoria Clarke
種類	Qualitative analysis approach	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	TA, Reflexive Thematic Analysis
関連	4	3
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.	Thematic Analysis (TA) is a qualitative research methodology for identifying, analyzing, and reporting patterns (themes) in qualitative data. Developed systematically by Virginia Braun and Victoria Clarke (2006), TA is flexible and accessible, applicable across diverse theoretical frameworks and data types, making it one of the most widely used qualitative methods in psychology, health research, and social sciences.