Doubters are more convincing than advocates The impact of user comments and ratings on credibility perceptions of false news stories on social media

False information on social media poses a crucial threat to our society, and calls for interventions to combat this problem are becoming louder. Users themselves may have the potential to diminish the impact of misleading information. In an online experiment with a 3 x 3 between-subjects design (credibility evaluation in user comments: positive vs. negative vs. none) x (numerical credibility rating: positive vs. negative vs. none), we tested the influence of bandwagon cues on the impact of a false news post on Facebook (N = 240). Contrary to prevalent assumptions regarding heuristic information processing, numerical credibility ratings had no influence on participants' credibility appraisals and intended sharing behavior. However, negative user comments diminished the believability of false news. Moreover, participants' willingness to share the news post publicly and privately was indirectly reduced by the effect of negative user comments on perceived news credibility.