Personality Inventory for ICD-11 (PiCD) Trait Domains: Psychometric Properties and Cutoffs Based on General...

Area of Science:

• Psychiatry
• Psychometrics
• Clinical Psychology

Background:

• The ICD-11 classification of Personality Disorder (PD) uses global severity and trait domains (Negative affectivity, Detachment, Dissociality, Disinhibition, Anankastia).
• The Personality Inventory for ICD-11 (PiCD) measures these domains but requires evaluation in Scandinavian populations.

Purpose of the Study:

• To investigate the psychometric properties of the PiCD in a Danish adult population.
• To provide normative data for clinical cutoffs and score interpretation of the PiCD.

Main Methods:

• A representative, socio-demographically stratified sample of 714 Danish adults was used.
• Psychometric properties, including internal consistency and associations with psychosocial functioning, were analyzed.
• A four-factor model was tested, including a bipolar dimension of Disinhibition versus Anankastia.

Main Results:

• A four-factor model, including a Disinhibition/Anankastia dimension, was supported, aligning with previous research.
• The PiCD demonstrated acceptable internal consistency and significant correlations with psychosocial functioning.
• Hierarchical structure analysis revealed a coherent pattern across four levels, from a global factor to specific traits.

Conclusions:

• The PiCD is a useful tool for assessing ICD-11 trait domains in a Scandinavian context.
• Representative normative data are crucial for accurate clinical interpretation and decision-making.
• Tentative cutoffs and a scoring key are provided to aid clinical application.