Valerie van MulukomLotte J. PummererSinan AlperHui BaiVladimíra ČavojováJéssica E.M. FariasCameron S. KayLjiljana B. LazarevicEmilio Jon Christopher LobatoGaëlle Marinthe2025-10-06202218735347, 027795360277-953610.1016/j.socscimed.2022.114912https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126963238&doi=10.1016%2Fj.socscimed.2022.114912&partnerID=40&md5=5a49469a2f60d219bab46cdb3807c572https://gcris.yasar.edu.tr/handle/123456789/8721Rationale: Belief in COVID-19 conspiracy theories can have severe consequences, it is therefore crucial to understand this phenomenon in its similarities with general conspiracy belief but also in how it is context-dependent. Objective: The aim of this systematic review is to provide a comprehensive overview of the available research on COVID-19 conspiracy beliefs and to synthesise this research to make it widely accessible. Methods: We present a synthesis of COVID-19 conspiracy belief research from 85 international articles identified and appraised through a systematic review in line with contemporary protocols and guidelines for systematic reviews. Results: We identify a number of potential 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) their consequences (protective behaviours self-centred and misguided behaviours such as hoarding and pseudoscientific health practices vaccination intentions psychological wellbeing and other negative social consequences such as discrimination and violence) and the effect sizes of their relations with the conspiracy beliefs. Conclusions: We conclude that understanding both the potential antecedents and consequences of conspiracy beliefs and how they are context-dependent is highly important to tackle them whether in the COVID-19 pandemic or future threats such as that of climate change. © 2022 Elsevier B.V. All rights reserved.EnglishConspiracy Beliefs, Coronavirus, Covid-19, Guideline Adherence, Systematic Review, Vaccine Hesitancy, Sars-cov-2 Vaccine, Covid-19, Guideline, Literature Review, Vaccination, Vaccine, Attitude To Illness, Authority, Climate Change, Clinical Protocol, Conspiracy Theory, Coronavirinae, Coronavirus Disease 2019, Demography, Effect Size, Health Behavior, Hoarding, Human, Life Threat, Pandemic, Personality, Protocol Compliance, Psychological Well-being, Review, Social Aspect, Social Discrimination, Social Media, Statistical Bias, Systematic Review, Thinking, Trust, Vaccine Hesitancy, Violence, Epidemiology, Psychology, Humans, Pandemics, Sars-cov-2, Systematic Reviews As Topic, VaccinationSARS-CoV-2 vaccine, COVID-19, guideline, literature review, vaccination, vaccine, attitude to illness, authority, climate change, clinical protocol, conspiracy theory, Coronavirinae, coronavirus disease 2019, demography, effect size, health behavior, hoarding, human, life threat, pandemic, personality, protocol compliance, psychological well-being, Review, social aspect, social discrimination, social media, statistical bias, systematic review, thinking, trust, vaccine hesitancy, violence, epidemiology, psychology, Humans, Pandemics, SARS-CoV-2, Systematic Reviews as Topic, VaccinationReview