We examined whether the provision of diverse information could facilitate creative idea generation. The scanning method (Washida, Mitsuishi, & Horii, 2009) was used as a creative idea generation task. Thirty-five students from the University of Amsterdam were provided with 30 articles; they were asked to point out possible trends in future society that have been commonly implied in some of the articles. On the basis of the cluster coefficient (CC), which measured the similarity of the articles, two conditions were set. The results showed that the participants tended to select the articles that were similar and to reduce their diversity even though diverse articles were provided. The results also revealed that the diversity of articles that they used was positively correlated with the quality of generated ideas. It was concluded that not the provision of but the use of diverse information had an effect on the quality of generated ideas.