According to a study, the need for cognitive closure has been found to be associated with a variety of suboptimal information processing strategies, leading to decreased creativity and rationality. When compared to participants in the essay condition, participants in the short story condition experienced a significant decrease in self-reported need for cognitive closure. The effect was particularly strong for participants who were habitual readers (of either fiction or non-fiction). These findings suggest that reading fictional literature could lead to better procedures of processing information generally, including those of creativity.
Djikic, M., Oatley, K., & Moldoveanu, M. C. (2013). Opening the closed mind: The effect of exposure to literature on the need for closure. Creativity Research Journal, 25(2), 149-154. http://dx.doi.org/10.1080/10400419.2013.783735