Assessing the relationships between individual differences in source monitoring, and psychosis proneness, dissociation, and narcissism dimension in community-dwelling adults

To test the associations between source monitoring (SM) and psychosis proneness, dissociation, and narcissism dimensions in the community, 295 community-dwelling adult participants were administered online the SM Task (SMT), as well as the Personality Inventory for DSM-5-Short Form (PID-5-SF), the Community Assessment of Psychic Experiences-Positive 15 (CAPE-P15), the Brief Dissociative Experiences Scale-Modified (DES-B), and the Pathological Narcissism Inventory (PNI). Confirmatory factor analyses showed that the SMT scores were unidimensional and that both PID-5-SF Psychoticism trait scales and CAPE-P15 scale mapped to the same latent dimension. Structural equation modeling results documented meaningful and significant, albeit modest relationship between SM latent dimension and Psychoticism, Dissociation, and Narcissism latent factors. As a whole, our findings suggest that SM may represent a cognitive process common to different dysfunctional dimensions, thus representing a potentially interesting trans-diagnostic cognitive marker.