Antecedents and consequences of COVID-19 conspiracy beliefs: a systematic review

Belief in COVID-19 conspiracy theories can have severe consequences; it is therefore crucial to understand this phenomenon. We present a narrative synthesis of COVID-19 conspiracy belief research from 85 international articles, identified and appraised through a systematic review. We identify a number of significant antecedents of COVID-19 conspiracy beliefs (individual differences, personality traits, demographic variables, attitudes, thinking styles and biases, group identity, trust in authorities, and social media use) and their consequences (protective behaviours, self-centred and misguided behaviours such as hoarding and pseudoscientific health practices, vaccination intentions, mental health, and other negative social consequences such as discrimination and violence). We conclude that understanding both the antecedents and consequences of conspiracy beliefs is highly important to tackle them, whether in the COVID-19 pandemic or future threats, such as that of climate change.