Psychoticism, Neuroticism, and Openness:

"although psychoticism, like almost all forms of psychopathology, has a sizeable association with Neuroticism, it loads primarily on a factor with Openness, not Neuroticism, when Intellect and Openness are measured separately (DeFruyt et al., 2013; DeYoung et al. 2012, 2016)."