How Shades of Truth and Age Affect Responses to COVID-19 (Mis)information: Randomized Survey Experiment among WhatsApp Users in UK and Brazil

Humanities and Social Sciences Communications.

Abstract: We examined how age and exposure to different types of COVID-19 (mis)information affect misinformation beliefs, perceived credibility of the message and intention-to-share it on WhatsApp. Through two mixed-design online experiments in the UK and Brazil (total N = 1,454) we first randomly exposed adult WhatsApp users to full misinformation, partial misinformation, or full truth about the therapeutic powers of garlic to cure COVID-19. We then exposed all participants to corrective information from the World Health Organization debunking this claim. We found stronger misinformation beliefs among younger adults (18-54) in both UK and Brazil and possible backfire effects of corrective information among older adults (55+) in the UK. Corrective information from the WHO was effective in enhancing perceived credibility and intention-to-share of accurate information across all groups in both countries. Our findings call for evidence-based infodemic interventions by health agencies, with greater engagement of younger adults in pandemic misinformation management efforts.

Yan Jin  Xuerong Lu 

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