Módszerek összehasonlítása

	Szakértői interjú	Delphi Módszer
Tudományterület	Kvalitatív módszerek	Kvalitatív módszerek
Módszercsalád	Process / pipeline	Process / pipeline
Keletkezés éve	1970s–1990s (methodologically systematized)	1963
Megalkotó	Meuser & Nagel (methodological codification, 1991); roots in elite interview tradition (Dexter, 1970)	Norman Dalkey & Olaf Helmer (RAND Corporation)
Típus	Qualitative research method	Structured iterative expert-elicitation process
Alapmű	Bogner, A., Littig, B., & Menz, W. (Eds.). (2009). Interviewing Experts. Palgrave Macmillan.	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.
Alternatív nevek	elite interview, key informant interview, specialist interview	Delphi Yöntemi, Delphi technique, expert consensus method
Kapcsolódó	6	5
Összefoglaló	The expert interview is a qualitative method in which researchers conduct in-depth, semi-structured conversations with individuals who hold specialised knowledge, experience, or decision-making authority in a defined field. Unlike general population interviews that target subjective lived experience, expert interviews treat respondents as proxies for a broader institutional or professional knowledge domain. The method is widely used in policy research, organisational studies, science and technology studies, and applied social sciences to map tacit professional knowledge, reconstruct decision processes, and triangulate documentary sources.	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.