Nominal group technique

Knowledge Management

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In some problem domains, more than one expert might be available as a source of knowledge for building the KM system. However, for situations in which several experts have overlapping expertise, each expert’s opinion must be interpreted in line with the problem domain. In fact, a single expert is used precisely to avoid potential contradictions between experts and possible misinterpretations on the part of the knowledge developer. The nominal group technique and Delphi method have been shown to mitigate some of the process losses associated with multiple experts.
The features are listed as follows:
 Provides an interface between consensus and brainstorming
 Panel of experts becomes a “nominal” group whose meetings are structured in order to effectively pool individual judgment
 An idea writing or idea generation technique

NGT Procedure

 Each expert is asked to list pros and cons of the problem or alternate solutions
 A list of all pros and cons are compiled
 Each expert is given the list and asked to rank them on basis of their priorities
 Knowledge developer lead a discussion on the relative ranks in hope of getting possible solutions
 A group discussion is followed to choose the “best” solution from the alternatives

NGT (Advantages)

 Effective in multiple expert knowledge capture, especially when minimizing differences in status among experts
 In NGT, each expert has an equal chance to express ideas in parallel with other experts in the group
 With discussion proceeds in sequential order, NGT can be a more efficient and productive approach than brainstorming

NGT (Drawbacks)

 Technique can be time consuming
 Has been known to promote impatience among experts who must listen to discussions with other experts
 With experts sharing expertise, things can jell in adopting the best solution
 NGT is ideal in situations of uncertainty regarding the nature of the problem