Delphi and NGT

The modified NGT is an evaluation tool which can complement or replace other educational tools like surveys. Also it can be used to evaluate established courses or new curricula courses or programs. Its features which are NGT advantages are:

• Produces rank-ordered
• Weighted
• Semi-quantitative data on learners’ perceptions of the strengths and weaknesses of a course
• It generates both positive and negative feedback
• And also it minimizes the influence that a “vocal minority” of learners.

NGT has three research based fundamental;

• Nominal’ Groups
• Round Robin’ element
• Reliable communication requires

The Delphi method is a qualitative and quantitative research technique which is suited when phenomena knowledge is uncompleted. Also it is suitable for research projects which focus on solutions, forecasts, opportunities and problems because it is a fluid discipline ripe for research. Delphi has many varieties such as, sample size, methodological orientation, mode of interaction, and the number of rounds. Rigor can be added to the method by considering these choices.
The advantages of Delphi:

• The greater advantage of Delphi is that he researcher will validate the results, by triangulation, with another research approach.
• The Delphi approach can be adapted to a particular situation creatively and aggressively.
• When adapting the approach, there is a need to balance validity with innovation.

References:
Dobbie, A., MD., Rhodes, M., FRCGP, Tysinger, J. W., PhD., & Freeman, J., MD. (2004). Using a modified nominal group technique as a curriculum evaluation tool. Family Medicine.
Skulmoski, G., Hartman, F. T., & Krahn, J. (2007). The Delphi method for graduate research. Journal of Information Technology Education. Vol. 6.
http://www.mycoted.com/Nominal_Group_Technique