The effects of similarity in the dark triad traits on the relationship quality in dating couples

The study examined the effects of similarity in the Dark Triad (DT) traits on women and men's relationship quality (RQ) by using profile similarity (PS) and polynomial regression analysis (PRA) as the methods for the assessment of partners' similarity. Participants were 100 young adult het...

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Bibliographic Details
Published in:Personality and individual differences 2018-09, Vol.131, p.38-44
Main Authors: Kardum, Igor, Hudek-Knezevic, Jasna, Mehic, Nermina, Pilek, Melane
Format: Article
Language:English
Subjects:
Antisocial personality disorder
Dark Triad traits
Heterosexuality
Interpersonal relations
Machiavellianism
Narcissism
Personality similarity
Personality traits
Polynomial regression
Polynomials
Profile similarity
Quality
Regression analysis
Relationship quality
Young adults
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Summary:The study examined the effects of similarity in the Dark Triad (DT) traits on women and men's relationship quality (RQ) by using profile similarity (PS) and polynomial regression analysis (PRA) as the methods for the assessment of partners' similarity. Participants were 100 young adult heterosexual dating couples. The effects of similarity in the DT traits on RQ were somewhat different depending on different methods used as well as whether we considered women or men's RQ. PRA showed that dissimilarity in psychopathy was related to lower women's RQ, while similarity at high levels of Machiavellianism to lower RQ in women and men. Additionally, women's RQ decreased more sharply when partners were similar at high levels of Machiavellianism. PS in narcissism was associated with higher RQ in women and men. This study suggests that different methods of assessment of (dis)similarity could add to the more thorough understanding of the associations between personality traits and relationship outcomes. •Similarities in Dark Triad were examined as predictors of relationship quality.•Profile similarity and polynomial regression analysis were used.•Dissimilarity in psychopathy was related to lower women's relationship quality.•Similarity in narcissism predicted higher relationship quality in women and men.•Similarity on high level of Machiavellianism is detrimental to relationship quality.
ISSN:0191-8869
1873-3549
DOI:10.1016/j.paid.2018.04.020