信任标签：事实核查中来源可信度的电生理特征
Trusting the tag: electrophysiological signatures of source credibility in fact-checking
社交媒体上的错误信息传播迅速，事实核查标签能否起作用尚不清楚。研究在记录脑电的同时，让 53 名被试对医疗健康新闻标题评定信任与分享意愿，并在给出可信或低可信来源的“真实”或“虚假”标签后再次评定。结果发现可信来源的标签更能影响评定，未观察到与反馈相关的负波，可信来源反而诱发更大的早期 P2 样成分，单试次分析显示 P2 与 P3 波幅和信任、分享有关。
As misinformation spreads rapidly on social media, understanding the efficacy of corrective interventions is a key challenge for cognitive science. We investigated behavioral and neurophysiological responses to fact-checking labels addressing medical and healthcare news. While EEG was recorded, 53 participants rated headlines on trust and willingness to share, both at baseline and after receiving ‘Truth’ or ‘Fake’ labels from either credible or low-credible medical sources. Behaviorally, credible source labels influenced trust and sharing intentions more strongly than low-credible labels. The label ‘Truth’ increased both measures only when attributed to the credible source, whereas the label ‘Fake’ decreased ratings regardless of source credibility. Neurally, we found no evidence for a feedback-related negativity (FRN/RewP) in response to labels. Instead, credible sources elicited a larger early P2-like response independent of label content, and single-trial analyses linked P2 and P3 amplitude to trust and sharing, most reliably when credible sources issued refuting corrections. These findings suggest source credibility is registered early and selectively shapes downstream evaluation of fact-checking labels.
中文翻译还没有生成，先显示原文。
来源：Scientific Reports · nature.com