The relationship between obsessive–compulsive spectrum disorders and DSM-5 dysfunctional personality domains in a nonclinical sample of Italian women

To evaluate the usefulness of the DSM-5 maladaptive personality domains in explaining the similarities and differences among four disorders included in the obsessive–compulsive spectrum, 428 Italian community-dwelling women (mean age = 31.96 years, SD = 12.30 years) were administered the Obsessive–Compulsive Spectrum Disorder Scales and the Personality Inventory for DSM-5-Short Form as part of an ongoing online survey on women's health. Multiple Indicators Multiple Causes (MIMIC) confirmatory bifactor analysis results showed that the OCSD general factor (i.e., obsessive–compulsive spectrum factor) was positively associated with Negative Affectivity, whereas Body Dysmorphic Disorder (BDD), Hoarding Disorder (HD), and Skin-Picking Disorder (SPD) specific factors showed significant and substantial differential relationships with dysfunctional personality domains. Specifically, BDD was positively associated with Negative Affectivity, Detachment and Psychoticism domains; HD was associated with high Negative Affectivity and Psychoticism; and SPD was associated with Detachment.