Conspiracy theories, personality dimensions and personality disorders.

Purpose of review: Conspiracy theories are not a recent phenomenon, but their dissemination has been facilitated by the internet and modern means of communication such as social media. This article reviews personality-based factors that increase the likelihood of endorsing conspiracy theories.

Recent findings: Most studies used a correlational approach and examined personality traits and dimensions rather than personality disorders. The strongest and most consistent relationships were found between endorsement of conspiracy theories and suspiciousness and paranoid ideation, pseudoscientific tendencies and beliefs, schizotypal personality traits and narcissism. Similar personality characteristics were identified as correlates of the endorsement of the specific COVID-19 conspiracy theories, but antisocial personality traits have also been reported in this context. Epistemic mistrust has emerged as arguably the key factor that facilitates endorsement of conspiracy theories. Schizotypal, paranoid, antisocial, borderline, and narcissistic personality disorders were more likely to accompany endorsement of conspiracy theories than other types of personality disorders.

Summary: Although correlation does not imply causation, recent work has identified personality-related characteristics that confer an increased risk of espousing conspiracy theories. Further research is necessary to ascertain how this vulnerability could be decreased, thus minimizing the harms of conspiracy theories that are inflicted on their adherents and broader society.