The recommendations they draw are:
1. Combining group and solitary brainstorming
2. Having group brainstormers interact by writing instead of speaking (“brainwriting”)
3. Using networked computers on which individuals type their ideas and read the ideas of others (electronic brainstorming)
They nicely give some recommended readings:
- Paulus, P.B., & Nijstad, B.A. (Eds.). (in press). Group creativity. New York: Oxford University Press.
- Brown, V., Tumeo, M., Larey, T.S., & Paulus, P.B. (1998). Modeling cognitive interactions during group brainstorming. Small Group Research, 29, 495–526.
- Osborn, A.F. (1957). Applied imagination (1st ed.). New York: Scribner.
Many institutional brainstorming sessions I have attended are a complete waste of time, for all the obvious reasons (mostly ego-dominance and poor leadership). This the paper refers to as 'production blocking'. However, I find that managed correctly, there are few better ways to introduce diversity of thought into a process.
https://www.psychologicalscience.org/news/minds-business/the...
The researchers found that a problem with brainstorming is the verbal component - due to social factors and limited oral and aural bandwidth, less ideas get shared, and people forget what they were about to say.
They decided 'brainwriting' is more effective, particularly 'asynchronous brainwriting' which alternates between writing your own ideas in a group, then reviewing others' ideas. This method would support want you want - getting all the ideas out quickly, because people are less likely to hold back, then iterating on them.