विधियों की तुलना करें

	नॉमिनल ग्रुप टेक्नीक	डेल्फी विधि	फोकस ग्रुप अनुसंधान
क्षेत्र	गुणात्मक	गुणात्मक	गुणात्मक
परिवार	Process / pipeline	Process / pipeline	Process / pipeline
उद्भव वर्ष	1971	1963	1940s (sociological origin); modern applied form from the 1980s–1990s
प्रवर्तक	André L. Delbecq and Andrew H. Van de Ven	Norman Dalkey & Olaf Helmer (RAND Corporation)	Robert K. Merton (sociological precursor, 1940s); popularised in applied research by Richard A. Krueger
प्रकार	Qualitative research method	Structured iterative expert-elicitation process	Qualitative data collection method
मौलिक स्रोत	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.	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
उपनाम	NGT, structured group process, nominal group process, priority-setting group method	Delphi Yöntemi, Delphi technique, expert consensus method	focus group discussion, FGD, group interview, Odak Grup Araştırması
संबंधित	6	5	6
सारांश	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.	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.