Abstract
A proliferation of conspiracy theories has emerged during the Covid-19 health pandemic. The present study investigated individual susceptibility to conspiracy beliefs and the mediating role of Covid related conspiracy beliefs on links between personality and intentional dissemination of Covid-19 conspiracies and willingness to obtain a Covid-19 vaccine. Specifically, we focused on trait psychopathy, Machiavellianism and collective narcissism, as these traits have previously been linked to heightened conspiracy mentalities. We recruited 406 UK participants to take part in an online survey investigating personality and Covid-19 information. Machiavellianism and primary psychopathy positively predicted general and Covid specific conspiracy beliefs, whereas collective narcissism positively predicted Covid specific conspiracy beliefs only. Covid-19 conspiracy beliefs mediated the negative relationships between all traits and willingness to obtain a future vaccine. We discuss possible implications of these findings and provide direction for future research.