The effects of social media virality metrics, message framing, and perceived susceptibility on cancer screening intention: The mediating role of fear

Social media platforms are increasingly playing a vital role in the process of dissemination and sharing of health information. The present study investigated whether and how online health information and virality metrics associated with social media platforms jointly shape persuasive outcomes in the context of cancer screening promotion. One important area of research on cancer screening promotion concerns loss-versus-gain message framing, which has highlighted the persuasive advantage of loss framing relative to gain framing. Given this, we examined how social media virality metrics, loss-versus-gain message framing, and perceived susceptibility influence message-evoked fear and intention to perform colonoscopy in the context of colorectal cancer screening. Results from an online experiment showed that loss framing, relative to gain framing, led to greater message-evoked fear when the message was presented with high-virality metrics, and this pattern was particularly pronounced among those with low perceived susceptibility to colorectal cancer. Furthermore, a formal test of moderated mediation showed that the indirect effect of loss framing on colonoscopy intention through message-evoked fear was significantly moderated by perceived susceptibility to colorectal cancer when the message was presented with high-virality metrics. Theoretical and practical implications of these findings are discussed.