The NGT technique takes advantage of pooled judgment from a variety of people with varied talents, knowledge and skills to form an agreement. The Delphi method collects and extracts the anonymous judgments of experts using data collection and analysis. Additional differences include, the Delphi method participants are anonymous to one another, they are physically separated and never meet, and all communication is done by way of questionnaires and feedback. The NGT participants become acquainted with each other; they meet fact to face, and communication is between participants.

During the Delphi method, opinions are sought on a particular topic. After the opinions are collected they are summarized and returned to the expert for further opinions and judgment. Several rounds of this collaboration generate a synthesis of opinions.

The NGT allows for each individual group member to independently develop a list of ideas surrounding the issues being discussed. Group members report their ideas one at a time, followed by discussion. Afterwards the group members rank the ideas that were presented.

One force I would use is original because in both methods the ideas and suggestions can bring about innovative and creative forces. The second force would be equal. Both methods give participants the opportunity to have equal input and communication. If given the choice of one method to use, I find the NGT method more appealing. It reminds me of the process used during the dissertation defense.

Delbecq, A. L., Van de Ven, A. H. & Gustafson, D. H. (1975). Group Techniques for       Program Planning: A Guide to Nominal Group and Delphi Process. Glenview,     IL: Scott-Foresman.