So sánh phương pháp

	Kỹ thuật Delphi	Phỏng vấn có cấu trúc
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1950s–1963	1940s–1950s
Người khởi xướng	Norman Dalkey and Olaf Helmer (RAND Corporation)	Survey research tradition; formalized by Campbell, Katona, and Kahn in mid-20th century
Loại	Iterative expert consensus technique	Quantitative / mixed data collection technique
Công trình gốc	Dalkey, N., & Helmer, O. (1963). An experimental application of the Delphi method to the use of experts. Management Science, 9(3), 458–467.	Fontana, A., & Frey, J. H. (2000). The interview: From structured questions to negotiated text. In N. K. Denzin & Y. S. Lincoln (Eds.), Handbook of Qualitative Research (2nd ed., pp. 645–672). Sage.
Tên gọi khác	Delphi method, Delphi survey, expert consensus method, iterative expert panel	standardized interview, formal interview, schedule-based interview, fixed-format interview
Liên quan	6	4
Tóm tắt	The Delphi technique is a structured, multi-round data collection method that harvests and refines expert opinion through iterative questionnaires and controlled feedback. Developed at RAND Corporation in the 1950s, it is designed to converge a dispersed expert panel toward a reliable consensus on complex, uncertain, or future-oriented questions — without the conformity pressures of face-to-face group discussion.	A structured interview is a data collection technique in which every participant is asked exactly the same pre-specified questions in the same order, using standardized wording. Because the interview schedule is fixed, responses across participants are directly comparable, enabling quantitative aggregation and statistical analysis. It sits at the most standardized end of the interview continuum, between the self-administered questionnaire and the semi-structured interview.