The Delphi technique: myths and realities.
OBJECTIVE
To outline the key concepts and principles of the Delphi technique.


METHODS
Reference is made to a selection of studies that illustrate a variety of methodological interpretations. Drawing on Heshusius's concept of 'goodness criteria', particular emphasis is given to the question of scientific merit and means of evaluation.


CONCLUSIONS
Although the technique should be used with caution, it appears to be an established method of harnessing the opinions of an often diverse group of experts on practice-related problems.
Powell
Catherine
C
Lecturer in Child Health Nursing, School of Nursing and Midwifery, University of Southampton, Southampton, UK. cp6@soton.ac.uk
D032921:Consensus; D003697:Delphi Technique; D005104:Expert Testimony