By Eduardo Garza
The days when the media controlled the flow of the news are long gone. Today, participants in social media platforms play a major role in making news ‘go viral’ by sharing, commenting or endorsing content regardless of its authenticity. This common practice is one reason why fake news travels faster than ever before. Fake news can influence our decisions and shape our beliefs in a wide array of topics such as war (Khaldarova & Pantti, 2016), discrimination (Banaji, Bhat, et al. 2019), terrorism (Ewart, 2012), climate change (Lewandowsky, et al., 2013) and vaccination (Chiou & Tucker, 2018).
Availability cascades are news ‘going viral’ as a result of a reciprocal information availability process between media and the public (Kuran & Sunstein, 1999). Social media currently generates these availability cascades. Hazardous activities that pose a risk, regardless of their probability of occurrence or scope of impact, are common topics of availability cascades. Thus, risk perception is expectedly one of the reasons underlying the public’s amplification of fake news in social media.
In this study, Paul Slovic’s categorisation of hazardous activities (Slovic, 1987) is divided into four risk perception types (RPTs), namely RPT-1 (‘not dread’, ‘known’); RPT-2 (‘not dread’, ‘unknown’); RPT-3 (‘dread’, ‘unknown’); and RPT-4 (‘dread’, ‘known’). The objective is to understand how RPTs, whether posed as true or fake news, have an effect on the propensity to share, comment or endorse news in social media. Understanding this phenomenon is of utmost importance for social media platforms, fact-checkers and policymakers to set the guidelines for reducing the spread of fake news in social media.
The study reveals several findings. First, share and endorse, driven by easiness, are users’ most preferred virality actions. Second, the effect of sharing and endorsing fake news is smaller than the effect of sharing and endorsing true news. Third, non-dread risks (RPT-1, RPT-2) are more likely to be shared than dread risks (RPT-3, RPT-4) probably due to perception shifts. Fourth, arousal, risk to oneself, risk to others and perceived accuracy are effective predictors of news virality. Finally, the results support the optimism bias and illusionary effect.