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PAPER: Development of the Pathological Personality Trait Scales for the Latvian Clinical Personality Inventory (LCPI v2.2)
Viktorija Perepjolkina, Jelena Kolesnikova, Kristine Martinsone, Ainars Stepens

Building: Pinnacle
Room: Cordova-SalonE
Date: 2016-07-03 03:30 PM – 05:00 PM
Last modified: 2016-05-22

Abstract


LCPI is a self-report measure for the assessment of mental disorders, including personality disorders (PDs). The unique feature of the LCPI is that it merges mental disorders and functioning into one integrative model. The initial item pool of LCPI was developed, based on both the DSM-5 and ICF Core sets for depression, anxiety and schizophrenia. In the initial version of the LCPI along with 9 clinical scales and 10 functioning scales 10 PDs scales were developed based on DSM-5 criteria for the corresponding PDs (ie. using categorical approach). But this PDs scales showed very poor discriminant validity. To overcome this deficiency, it was decided to develop a revised version of PDs scales. An alternative dimensional approach to personality pathology proposed in the DSM-5 Section III, was used as a theoretical frame for scale development in this case. In the first stage a list of the 40 pathological personality traits – a combination of traits listed in Samuel et al. (2012) and Wright at al. (2012) was prepared for further analysis and finally 32 maladaptive traits were retained for further operationalization. It was theoretically expected that this trait scales will fell within six or five higher-order domains: Negative Affectivity, Detachment, Antagonism, Disinhibition, Compulsivity (domain under question) and Psychoticism. The main objective of current investigation is to evaluate the psychometric properties of the LCPI v2.2 pathological personality trait domain and facet scales. The LCPI v2.2 development sample (N = 548) included undergraduate student, community adult and psychiatric inpatient subsamples. Results revealed that the internal consistencies of the domain and facet trait scales were acceptable to good. Exploratory factor analysis supported theoretically expected 5-factor structure. Evidence for discriminant validity was mixed, for convergent validity - good. Overall, results provide support for the acceptable psychometric properties of LCPI v2.2 pathological personality trait scales.


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