Σύγκριση μεθόδων

	Πολυομαδική Εγκυρότητα Περιεχομένου	Μέθοδος Delphi
Πεδίο	Ψυχομετρία	Ποιοτικές Μέθοδοι
Οικογένεια	Latent structure	Process / pipeline
Έτος προέλευσης	1986–2006	1963
Δημιουργός	Lynn (1986); extended by Polit & Beck (2006)	Norman Dalkey & Olaf Helmer (RAND Corporation)
Τύπος	Validity assessment / expert judgment aggregation	Structured iterative expert-elicitation process
Θεμελιώδης πηγή	Polit, D. F. & Beck, C. T. (2006). The content validity index: Are you sure you know what's being reported? Critique and recommendations. Research in Nursing & Health, 29(5), 489–497.	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.
Εναλλακτικές ονομασίες	multi-group CVI, cross-group content validity, subgroup content validity index, multi-panel content validity	Delphi Yöntemi, Delphi technique, expert consensus method
Συναφείς	4	5
Σύνοψη	Multi-group content validity extends the standard content validity index (CVI) procedure by computing and comparing item- and scale-level validity indices across two or more distinct expert panels or subgroups. It ensures that a scale's items are judged as relevant and representative not only overall but also within each subgroup of interest, supporting cross-group generalizability of the instrument.	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.