Proposal for an HiTOP-based evaluation scale of traits of the Paranoid Personality Disorder
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Universidade São Francisco
Lucas de Francisco Carvalho   

Universidade São Francisco
Submission date: 2020-09-28
Final revision date: 2020-11-24
Acceptance date: 2020-11-25
Online publication date: 2021-09-28
Publication date: 2021-09-28
Arch Psych Psych 2021;23(3):25–33
Aim of the study:
This study aimed to operationalize a version of the Dimensional Clinical Personality Inventory 2 (IDCP-2) for the screening of typical traits of the Paranoid personality disorder (PPD) from the perspective of the HiTOP, as well as investigate its internal and external validity.

Subject or material and methods:
We selected IDCP-2 factors that appropriately represented PPD traits according to the HiTOP. We created new items for a Rudeness factor. The participants were 454 Brazilian adults (aged 18-70 years). We administered the following scales: IDCP-PPD, PID-5, and CAT-PD-SV.

We found a one higher-order factor structure for the IDCP-PPD The factors that composed this higher-order factor reflect traits from both HiTOP spectra witch PPD is represented, Thought disorder and Antagonistic externalizing. The expected correlations between IDCP-PPD factors and external measures were observed. Groups comparison indicated people with high levels of pathological traits in the external measures showing higher means in the IDCP-PPD scores in comparison to people with lower means in these measures.

The factors of the IDCP-PPD demonstrated a good capacity for the assessment of PPD traits.

The findings of our study indicate the IDCP-PPD scale as a useful tool for operationalizing HiTOP for clinical practice. Future studies should test our findings in patients with a PPD diagnosis.