The Mitsubishi Brainstorming Method was developed by Sadami Aoki when posted at Mitsubishi Resin.
Warm Up: Participants write their ideas down for 15 minutes; Participants read their ideas aloud (in order to prevent more vocal or aggressive people from dominating); While this is happening, people continue to write down ideas (this also helps those that didn’t come up with many ideas to save face); For the next hour or so, participants are asked to explain the background and content of their ideas in greater detail; This is written onto “idea maps” by the group leader.
Source: Tatsuno, S. (1990). Created in Japan: from imitators to world-class innovators.
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