Common genetic and environmental bases of the mental disorders and personality traits: Special focus on the hierarchical model of psychopathology and NEO-PI-R facets.

Autor: Mitrović D; Department of Psychology, Faculty of Philosophy, University of Novi Sad, Novi Sad, Serbia., Mihić L; Department of Psychology, Faculty of Philosophy, University of Novi Sad, Novi Sad, Serbia., Sadiković S; Department of Psychology, Faculty of Philosophy, University of Novi Sad, Novi Sad, Serbia., Smederevac S; Department of Psychology, Faculty of Philosophy, University of Novi Sad, Novi Sad, Serbia.
Jazyk: angličtina
Zdroj: Journal of personality [J Pers] 2024 Aug; Vol. 92 (4), pp. 1143-1157. Date of Electronic Publication: 2023 Aug 24.
DOI: 10.1111/jopy.12878
Abstrakt: Objective: This study examined whether phenotypic correlations between psychopathological dimensions and personality traits of different hierarchical levels originate from common genetic and environmental sources of variance.
Method: Participants were 386 monozygotic and 204 dizygotic twins. The Psychiatric Diagnostic Screening Questionnaire (PDSQ) was applied along with the Revised NEO Personality Inventory (NEO-PI-R). The results of the CFA confirmed the hypothesis of the internalizing and externalizing dimensions underlying PDSQ scales.
Results: The results indicated a significantly greater role of genetic compared to environmental factors in the relationship between internalizing psychopathology and personality traits. Facets of neuroticism showed positive genetic links with internalizing disorders, while negative genetic links were shown for all facets of extraversion except excitement-seeking, competence, self-discipline, achievement striving, actions, and trust. Lower-order personality traits were shown to be associated with internalizing disorders more intensively than the broader domains to which they belong, both at the phenotypic and genetic levels.
Conclusions: High neuroticism, together with several facets from the domain of extraversion and conscientiousness seems to represent an increased genetic susceptibility to the disorders from the internalizing spectrum. Results also suggest that specific environmental factors which are not shared with personality traits contribute to the internalizing symptoms.
(© 2023 Wiley Periodicals LLC.)
Databáze: MEDLINE
Externí odkaz: