We have developed GUNGEN-SPIRAL II, which is a system that supports the process of idea generation consistently. That is, the system supports the steps of idea collection, idea sharing, and idea generation . The system is a Web-based system. We performed experiments on the idea generation step using five kinds of computers. The results of the experiments suggested that even on the small screen of a smartphone used with an appropriate communication method, we could carry out the idea generation method well, with the exception of the operation of text input.
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