Moral Anger Accelerates Sharing of Low-Credibility News, Study Finds

Three experiments examined moral emotions and sharing of false headlines. Experiment 1 (N = 223, China) presented 24 fabricated stories with varying moral severity and source credibility (0-100%). When participants focused on moral content, they shared more, especially severe violations, and relied less on credibility. Experiment 2 (N = 116 university students) used 18 false headlines labeled high or low credibility; after an anger induction, the anger group shared significantly more low-credibility items than disgust or neutral groups, which showed no increase. Experiment 3 (N = 63 students) paired 36 true/false headlines with credibility labels after recalling an angry memory; modeling showed anger lowered decision thresholds, speeding sharing without harming truth-false discrimination.

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These findings align with dual-process theories that posit affect can bypass deliberative evaluation. Anger lowered the evidence threshold needed before participants chose to share, producing faster, less cautious decisions. Consequently, anger-inducing content can outpace credibility cues, facilitating rapid misinformation diffusion on platforms that rely on source judgments.

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Xiaozhe Peng, professor at Shenzhen University’s School of Psychology and head of the Emotion and Communication Neuroscience Lab, said the study was sparked by repeated observations that outrage-provoking posts spread quickly online. He emphasized that isolating moral anger revealed its unique ability to diminish reliance on source credibility. Peng added that the team plans to test lightweight prompts warning users about highly arousing content as a mitigation strategy.

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All three experiments were conducted in laboratory settings with Chinese participants and measured self-reported willingness to share rather than actual posting behavior. These factors limit the generalizability of the findings to other cultures and real-world social-media environments.

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• “What surprised us most was how consistently moral anger, rather than moral disgust, drove sharing across studies,” — Xiaozhe Peng

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• “We also found that anger was associated with lower decision thresholds, suggesting that it can make people decide to share more quickly and with less caution,” — Xiaozhe Peng

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• “People may share not only because they believe something is true, but because anger changes the emotional and decisional processes behind sharing and can even override more analytical evaluation.” — Xiaozhe Peng

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• “For everyday users, a practical takeaway is simple: if a post makes you instantly angry, that is exactly the moment to pause before liking, commenting, or sharing,” — Xiaozhe Peng

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The team intends to evaluate emotion-targeted prompts on live social-media platforms and to examine how cultural differences in emotional expression affect misinformation spread. Extending the paradigm to multiple countries and to real-world posting data will test the robustness of the anger-driven sharing effect.

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