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Delphi method

المؤلف:  Gipsy Chang & Josephine Csete

المصدر:  Enhancing Teaching and Learning through Assessment

الجزء والصفحة:  P458-C38

2025-08-22

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Delphi method

One way of building a consensus of experts from a particular domain in a given context is by using the Delphi method.

The Delphi method is a survey technique originally developed in the early 1950's by Olaf Helmer and Norman Dalkey at Rand Corporation in connection with national defense research sponsored by the United States Air Force (1962). The objective of "Project Delphi" was to obtain consensus from a group of experts with different backgrounds on forecasting issues associated with the use of the atomic bomb. The strength of using this method to build consensus on complex issues among a group of experts was recognized widely, and gradually the method has also come to be used for planning, decision-making, structured conferences, and technology assessment in numerous academic disciplines and different fields of interest in the private and public sectors (Tafoya 1986).

The classical Delphi survey is a structured group process. It has been defined by Helmer (1983), one of its creators, as:

A method of communication among experts, aimed at obtaining a consensus of opinion on some particular subject of inquiry. The method employs a series of intensive questionnaires interspersed with summarized information and opinion feedback derived from the responses to the preceding questionnaire (p.76).