পদ্ধতির তুলনা করুন

	নমিনাল গ্রুপ টেকনিক	অ্যাকশন রিসার্চ	বিষয়বস্তু বিশ্লেষণ	ডেলফি পদ্ধতি	ফোকাস গ্রুপ গবেষণা
ক্ষেত্র	গুণগত	গুণগত গবেষণা	গুণগত	গুণগত	গুণগত
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1971	1946	Systematised through Krippendorff's methodology work; 4th edition 2018	1963	1940s (sociological origin); modern applied form from the 1980s–1990s
প্রবর্তক	André L. Delbecq and Andrew H. Van de Ven	Kurt Lewin; expanded by Kemmis, McTaggart, Reason & Bradbury	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	Norman Dalkey & Olaf Helmer (RAND Corporation)	Robert K. Merton (sociological precursor, 1940s); popularised in applied research by Richard A. Krueger
ধরন	Qualitative research method	Method	Qualitative / mixed-method research technique	Structured iterative expert-elicitation process	Qualitative data collection method
মৌলিক উৎস	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.	Lewin, K. (1946). Action research and minority problems. Journal of Social Issues, 2(4), 34–46.	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.	Krueger, R.A. & Casey, M.A. (2014). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage. ISBN: 978-1483365244
অপর নাম	NGT, structured group process, nominal group process, priority-setting group method	Participatory Action Research, PAR, Collaborative Inquiry	İçerik Analizi, systematic content coding, quantitative content analysis	Delphi Yöntemi, Delphi technique, expert consensus method	focus group discussion, FGD, group interview, Odak Grup Araştırması
সম্পর্কিত	6	1	5	5	6
সারসংক্ষেপ	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.	Action research is a collaborative research methodology in which researchers work with practitioners and community members to investigate a problem, implement change, and evaluate outcomes, cycling through reflection, action, and learning. Developed by Kurt Lewin (1946), action research bridges research and practice, aiming simultaneously to produce knowledge and practical improvement.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	The Delphi method is a structured, iterative survey technique developed by Norman Dalkey and Olaf Helmer at the RAND Corporation in 1963 for eliciting and converging expert opinion on complex topics where empirical data are unavailable or insufficient. It collects independent judgements from a geographically dispersed expert panel over multiple anonymous rounds, feeding aggregated results back to participants after each round so they can revise their views in light of the group's collective position.	Focus group research is a qualitative data-collection method in which a trained moderator guides structured discussions with homogeneous groups of six to ten participants to explore ideas, attitudes, and perceptions on a defined topic. Developed from sociological roots in the 1940s and systematised for applied research by Krueger and Casey, the method leverages group interaction as a data source — revealing not just what people think, but how they negotiate and articulate views in a social setting.