Explicating the Dispositional Basis of the OCRDs: a Hierarchical Perspective

We examined the dispositional component of the obsessive-compulsive and related disorders (OCRDs) in a large adult sample. Our battery included two hierarchical measures of personality, which allowed us to examine relations with both higher-order domains and lower-order facets of the five-factor model. In addition, our study included multiple indicators of each OCRD, which enabled us to model them as latent factors. Principal factor analyses of these indicators revealed six dimensions: Obsessive-Compulsive Disorder (OCD), Hoarding, Excoriation, Body Dissatisfaction, Trichotillomania, and Body Preoccupation. Body Dissatisfaction, OCD, and Hoarding showed the strongest links to personality, with the other symptoms displaying more moderate associations. Neuroticism was the strongest and broadest predictor of the OCRDs at the domain level, exhibiting significant positive relations with every symptom dimension except Body Preoccupation in both bivariate and multivariate analyses. Conscientiousness showed negative associations with Body Dissatisfaction and Hoarding, and was positively related to Body Preoccupation. Finally, openness was negatively linked to OCD at both the bivariate and multivariate level. In comparison to domain-level analyses, the lower-order facets jointly contributed an additional 11.8% (Excoriation) to 17.6% (OCD) of the criterion variance, with a mean increment of 14.2%. Three neuroticism facets—anger, self-consciousness, and impulsiveness—displayed robust positive associations with two or more OCRD symptom factors, but no lower-order trait contributed significantly in every analysis. Overall, our results indicate that—similar to most other forms of psychopathology—OCRD symptoms have a common component of elevated neuroticism.