“I knew that traits from the so-called Dark Triad (narcissism, Machiavellianism, and psychopathy) as well as the traits subsumed within psychopathy are linked to health risk behavior and health problems, and I expected them to be implicated in health behaviors during the pandemic. There is also prior research suggesting that people high on the Dark Triad traits may knowingly and even deliberately put other people’s health at risk, e.g., by engaging in risky sexual behavior and not telling their partner about having HIV or STIs,” Blagov told PsyPost.