방법 비교

	델파이 기법	콘텐츠 분석	혼합 연구 방법론
분야	질적 방법	질적 방법	질적 방법
계열	Process / pipeline	Process / pipeline	Process / pipeline
기원 연도	1963	Systematised through Krippendorff's methodology work; 4th edition 2018	—
창시자	Norman Dalkey & Olaf Helmer (RAND Corporation)	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	—
유형	Structured iterative expert-elicitation process	Qualitative / mixed-method research technique	Research design framework
원전	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Creswell, J.W. & Plano Clark, V.L. (2018). Designing and Conducting Mixed Methods Research (3rd ed.). Sage. ISBN: 978-1483344379
별칭	Delphi Yöntemi, Delphi technique, expert consensus method	İçerik Analizi, systematic content coding, quantitative content analysis	Karma Yöntem Araştırması (Mixed Methods), multi-method research, triangulation design
관련	5	5	4
요약	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.	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.	Mixed methods research is a systematic research design in which quantitative and qualitative data are collected and analysed within a single study. Formalised by Creswell and Plano Clark (2003, 3rd ed. 2018), it offers three principal design variants — concurrent, sequential, and transformative — and strengthens findings through triangulation across both data strands.