The Delphi technique is appropriate when a
group consensus is required when making a group decision (Dagher, 2021). It
involves gathering all the ideas generated and compiling them for the group
leader to break them down into a smaller list. The choices are condensed until
a decision is made.
The brainstorming technique provides an
open environment where group members can express ideas to raise potential ideas
and solutions. Group members are encouraged to provide any idea that comes to
mind; there are no good or bad ideas.
In the nominal group technique (NGT), the
moderator records ideas gathered during a brainstorming session. Group members
share their ideas with the moderator, discussing each idea to gather information.
Ideas are then assigned priority scores and are pursued according to these
scores.
Comparison
The Delphi technique is used to collect,
organize, review, and revise group members' ideas. It involves generating a
group decision without physically gathering the group members. Ideas are
requested, and group members participate by answering questionnaires. By
ensuring group members participate independently, this technique promotes
accountability, active participation, eliminates bias, and avoids making
premature decisions before all ideas are expressed.
The nominal group technique conducts a
brainstorming discussion and includes a voting process after each discussion.
Each group member casts a vote and explains why they voted for an option and why
they feel it is the best choice. When the discussion topic is sensitive, group members
can stay anonymous as they participate in the survey. Otherwise, the meeting
can be conducted through an open discussion.
Even though both techniques rely on a moderator,
their responsibilities are different. Delphi moderators have more responsibilities
and are more demanding compared to NGT moderators. The Delphi and NGT methods
have a similar structure in how they are conducted. However, they are employed in very different
situations. NGT is often used when making smaller decisions with fewer
consequences. It is thus used to make decisions requiring some discussion but
without needing the opinions of third parties. The Delphi technique involves
back and forth discussions between decision-makers and panelists. This
technique takes a lot of time because the decision must be well informed. When
this technique is performed correctly, it leads to selecting the best idea. The
Delphi technique is used to make decisions on high-stakes issues requiring a thorough
examination of options. NGT is used to make decisions from a small group of
respondents, while the Delphi technique uses isolated respondents (Daly, 2022).
References
Dagher, K. (2021). Ten
of the Most Effective Group Decision Making Techniques.
https://fellow.app/blog/productivity/group-decision-making-techniques/
Daly, C. (2022). Five Effective Group
Decision-Making Techniques.
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