From Pacific Standard:
Are you uncomfortable with ambiguity? It’s a common condition, but a highly problematic one. The compulsion to quell that unease can inspire snap judgments, rigid thinking, and bad decision-making. Fortunately, new research suggests a simple antidote for this affliction: Read more literary fiction. A trio of University of Toronto scholars, led by psychologist Maja Djikic, report that people who have just read a short story have less need for what psychologists call “cognitive closure.” Compared with peers who have just read an essay, they expressed more comfort with disorder and uncertainty—attitudes that allow for both sophisticated thinking and greater creativity. “Exposure to literature,” the researchers write in the Creativity Research Journal, “may offer a (way for people) to become more likely to open their minds.”
Djikic and her colleagues describe an experiment featuring 100 University of Toronto students. After arriving at the lab and providing some personal information, the students read either one of eight short stories or one of eight essays. The fictional stories were by authors including Wallace Stegner, Jean Stafford, and Paul Bowles; the non-fiction essays were by equally illustrious writers such as George Bernard Shaw and Stephen Jay Gould. Afterwards, each participant filled out a survey measuring their emotional need for certainty and stability. They expressed their agreement or disagreement with such statements as “I don’t like situations that are uncertain” and “I dislike questions that can be answered in many different ways.” Those who read a short story had significantly lower scores on that test than those who read an essay. Specifically, they expressed less need for order and more comfort with ambiguity. This effect was particularly pronounced among those who reported being frequent readers of either fiction or non-fiction.
More here.