The DSM-5 Section III proposes a dimensional-categorical model of conceptualizing personality and its disorders, which includes assessment of impairments in personality functioning (criterion A) and maladaptive personality traits (criterion B). The Personality Inventory for DSM-5 (PID-5) is a self-report, composed of 220 items, organized into 25 facets nested in five domains of personality differences, and was developed to operationalize criterion B.

This study explores the factor structure of the Portuguese adaptation of the PID-5.

The five-factor structure that has emerged in previous studies with the PID-5 (cf. Krueger & Markon) is expected to be replicated in the current study.

Exploratory factor analyses with varimax oblique rotation were conducted on a sample of Portuguese adults from the general population (n = 379, Mage = 31.49, SD = 14.16, 25.3% males, 74.7% females).

A six factor structure was retained in which the first 5 factors resemble the PID-5 domains. The model showed good fit indices (KMO = 0.897). The total explained variance was 68.25%. All the facets but four had primary loadings on the expected factor.

The similarity of results across studies and nationalities contributes to the validation of the Portuguese translation of the PID-5 and highlights the structural resemblance among the DSM-5 model and the five factor model (FFM) and the personality psychopathology-five model (PSY-5), drawing attention to the relevance of these models for the diagnosis of Personality Disorders.

The authors have not supplied their declaration of competing interest.