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Journal Article

Pre-existing beliefs and expectations influence judgments of novel health information

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons83854

Chang,  D-S
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Chang, D.-S., Kang O-S, Kim H-H, Kim H-S, Lee H, Park H-J, Kim, H., & Chae, Y. (2012). Pre-existing beliefs and expectations influence judgments of novel health information. Journal of Health Psychology, 17(5), 753-763. doi:10.1177/1359105311421044.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-B6B6-D
Abstract
The present study examined whether health information is judged differently depending on pre-existing beliefs and expectations. People’s initial beliefs and expectations were assessed by a questionnaire about acupuncture and a trustworthiness and preference rating task of doctors’ faces. Then, newspaper headlines about novel acupuncture treatment were shown and rated for their feasibility in a normal and framed condition. The judged feasibility of the newspaper headlines correlated strongly with initial beliefs about acupuncture in the normal condition, and with initial expectations towards a doctor’s face in the framed condition. Thus, as suggested by Bayes Theorem, pre-existing beliefs and expectations influence judgments of novel health information.