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Fact-related information contained in fictional narratives may induce substantial changes in readers' real-world beliefs. Current models of persuasion through fiction assume that these effects occur because readers are psychologically transported into the fictional world of the narrative. Contrary to general dual-process models of persuasion, models of persuasion through fiction also imply that persuasive effects of fictional narratives are persistent and even increase over time (absolute sleeper effect). In an experiment designed to test this prediction, 81 participants read either a fictional story that contained true as well as false assertions about real-world topics or a control story. There were large short-term persuasive effects of false information, and these effects were even larger for a group with a 2-week assessment delay. Belief certainty was weakened immediately after reading but returned to baseline level after 2 weeks, indicating that beliefs acquired by reading fictional narratives are integrated into real-world knowledge.

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