手法を比較

	構造化合意形成手法としてのナショナル・グループ・テクニック（NGT）	Thematic Analysis
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1971	2006
提唱者	André L. Delbecq and Andrew H. Van de Ven	Virginia Braun and Victoria Clarke
種類	Qualitative research method	Method
原典	Delbecq, A. L., & Van de Ven, A. H. (1971). A group process model for problem identification and program planning. Journal of Applied Behavioral Science, 7(4), 466–492.	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	NGT, structured group process, nominal group process, priority-setting group method	TA, Reflexive Thematic Analysis
関連	6	3
概要	The Nominal Group Technique (NGT) is a structured group facilitation method designed to generate and prioritise ideas, problems, or solutions while ensuring equal participation from all members. Developed by Delbecq and Van de Ven in 1971, it combines silent individual idea generation with structured group discussion and systematic voting to produce a ranked list of priorities. Unlike unstructured focus groups, NGT prevents dominant voices from suppressing quieter participants, making it especially valuable for needs assessment, program planning, and stakeholder priority-setting in applied research and policy contexts.	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.