手法を比較

	リモートデルファイ法	デルファイ法
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1950s (classic Delphi); remote/e-Delphi from late 1990s	1950s–1963
提唱者	Olaf Helmer and Norman Dalkey (RAND Corporation; classic Delphi); e-Delphi adapted by various methodologists from late 1990s onward	Norman Dalkey and Olaf Helmer (RAND Corporation)
種類	Iterative expert consensus technique — remote administration	Iterative expert consensus technique
原典	Hasson, F., Keeney, S., & McKenna, H. (2000). Research guidelines for the Delphi survey technique. Journal of Advanced Nursing, 32(4), 1008–1015.	Dalkey, N., & Helmer, O. (1963). An experimental application of the Delphi method to the use of experts. Management Science, 9(3), 458–467.
別名	online Delphi, e-Delphi, virtual Delphi, distributed Delphi	Delphi method, Delphi survey, expert consensus method, iterative expert panel
関連	4	6
概要	The Remote Delphi Technique applies the structured iterative consensus process of the classic Delphi method entirely through remote communication channels — email, web-based survey platforms, or dedicated collaboration tools — eliminating the need for geographic co-presence. Experts complete successive questionnaire rounds asynchronously, receiving anonymised statistical summaries of the group's prior responses before each new round, until a pre-defined consensus threshold is reached.	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.