Who Fact-Checks and Does It Matter? Examining the Antecedents and Consequences of Audience Fact-Checking Behaviour in Hong Kong

This study investigated the ways in which people engaged in fact-checking in a highly divided context—the Anti-Extradition Bill Movement (AEBM) in Hong Kong. A telephone survey representative of the Hong Kong population was conducted in 2020 (N = 1,004). The findings showed that males with greater news consumption and issue involvement were more likely to engage in fact-checking behavior. Nevertheless, the effects of fact-checking appeared mixed. We first found that fact-checking behavior reduced belief in disagreeable misinformation only for supporters of the AEBM. More robust evidence showed that frequent fact-checking behavior reinforced, rather than reduced, partisans’ belief in misinformation regarding the opponent group. A warning of the backfire effects of fact-checking on exacerbating opinion polarization and social division is issued.