A common question about ideation is whether it is a solo, two-person or group activity? The workshop experience shows that in the conceptual design stage, pairs of designers acting "with one spirit" can be more fruitful than solo designers. Moreover, a classic 1970 paper by Torrance showed that two-person interaction produced twice as many original ideas, produced ideas of twice as much originality, increased enjoyment, and led subjects to attempt more difficult tasks. This reflects how ideation is influenced and shaped by participants' social interactions that provide inspiration and emotional satisfaction. And so, solo ideators may find that subsequent brainstorming in group can improve the overall quantity and quality of ideas generated. In short, whether solo, duo and group ideation, the quality and variety of ideas improve when exposed to other ideas, as experienced when ideas are shared and discussed in the workshop's plenary session.
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