Structure of Pathological Personality Traits through the Lens of the CAT-PD Model
Personality pathology is increasingly conceptualized within hierarchical, dimensional trait models. The Comprehensive Assessment of Traits Relevant to Personality Disorders (CAT-PD) is a measure of pathological traits with wider coverage than prevailing instruments—however, its domain-level structure is not established. In this pre-registered study, we investigated the domain level of the CAT-PD to provide structural evidence and construct validation of the higher-order structure of personality pathology using a more comprehensive set of lower-order traits than predominant measures. We estimated five- and six-factor models with exploratory factor analysis in a pooled sample of 8 independent subsamples (N=3,987) and found that both models fit the data well, each had interpretable factors that were invariant across gender and sample type, and the factors had good convergent validity with other maladaptive traits, Big Five personality, and interpersonal problems. Our results support the validity of the CAT-PD for assessing multiple levels of the pathological trait hierarchy.