Effects
NGT have been shown to enhance one or more dimensions of effectiveness of decision-making groups. Requiring individuals to write down their ideas silently and independently prior to a group discussion increased the number of solutions generated by groups. Round-robin polling also resulted in a larger number of inputs and fostered more equal participation. The increased number of heterogeneous inputs led to high quality decisions.
As compared to interacting groups the NGT groups provide more unique ideas, more balanced participation between group members, increased feelings of accomplishment, and greater satisfaction with idea quality and group efficiency.
These findings are consistent with a 1958 study which found that, in response to three different problems requiring creative thinking, the number of ideas produced by "nominal groups" (whose members were actually working alone) was greater than the number of ideas produced by real, face-to-face groups. The ideas generated by the nominal and real groups were rated qualitatively and for originality, and the nominal groups scored better on both of those measures.
Read more about this topic: Nominal Group Technique
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