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

IF 5 1区心理学 Q1 Psychology Journal of Personality Pub Date : 2023-08-24 DOI:10.1111/jopy.12878

Dušanka Mitrović, Ljiljana Mihić, Selka Sadiković, Snežana Smederevac

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Abstract

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.

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精神障碍和人格特质的共同遗传和环境基础：特别关注精神病理学的层次模型和 NEO-PI-R 面。

研究目的本研究探讨了不同层次的精神病理学维度和人格特质之间的表型相关性是否源于共同的遗传和环境变异：参与者为 386 对单卵双胞胎和 204 对双卵双胞胎。方法：受试者为 386 对单卵双生子和 204 对双卵双生子，采用精神病诊断筛查问卷（PDSQ）和修订版 NEO 人格问卷（NEO-PI-R）。CFA的结果证实了PDSQ量表中内化和外化维度的假设：结果表明，在内化心理病理学与人格特质之间的关系中，遗传因素的作用明显大于环境因素。神经质的各方面与内化障碍有正向遗传联系，而除了寻求刺激、能力、自律、追求成就、行动和信任之外，外向性的所有方面都与内化障碍有负向遗传联系。在表型和遗传水平上，低阶人格特质与内化障碍的相关性比其所属的更广泛的领域更强：结论：高神经质以及外向性和自觉性领域的几个方面似乎代表了遗传因素对内化谱系障碍的易感性增加。研究结果还表明，与人格特质不同的特定环境因素也会导致内化症状。

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来源期刊

Journal of Personality PSYCHOLOGY, SOCIAL-

CiteScore

9.60

自引率

6.00%

发文量

100

期刊介绍： Journal of Personality publishes scientific investigations in the field of personality. It focuses particularly on personality and behavior dynamics, personality development, and individual differences in the cognitive, affective, and interpersonal domains. The journal reflects and stimulates interest in the growth of new theoretical and methodological approaches in personality psychology.