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Previous research has argued that fake news may have grave consequences for health behavior, but surprisingly, no empirical data have been provided to support this assumption. This issue takes on new urgency in the context of the coronavirus pandemic, and the accompanying wave of online misinformation. In this large preregistered study (N = 3,746), we investigated the effect of a single exposure to fabricated news stories about COVID-19 on related behavioral intentions. We observed small but measurable effects on some behavioral intentions but not others-for example, participants who read a story about problems with a forthcoming contact-tracing app reported a 5% reduction in willingness to download the app. These data suggest that one-off fake news exposure may have behavioral consequences, though the effects are not large. We also found no effects of providing a general warning about the dangers of online misinformation on response to the fake stories, regardless of the framing of the warning in positive or negative terms. This suggests that generic warnings about online misinformation, such as those used by governments and social media companies, are unlikely to be effective. We conclude with a call for more empirical research on the real-world consequences of fake news. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
Greene et al. (Thu,) studied this question.
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