Abstract

The Dark Factor of Personality (D) measures the latent core of antagonistic traits. The present study evaluated the psychometric properties of the Swedish version of the full (D70) and the brief (D16) versions, concerning structural validity, item information, and convergent validity. An online sample (N = 294) was analyzed using CFA (Maximum Likelihood Estimation), IRT (Graded Response Model) and SEM (latent correlations). Firstly, the original theorized bifactor model for D70 and a single-factor model for D16 showed good fit to the data. Moreover, new reliability-analyses based on FD and H indicated that the D70 favorably can be collapsed into a unidimensional measure, which is further discussed. Secondly, the IRT-analyses present valid item quality and functioning and showed that items provide the most information on trait levels above mean levels. Lastly, convergent SEM-analyses showed that D had high latent trait correlations to psychopathy and Machiavellianism, but not to narcissism. The correlations with the Big Six personality factors (mini-IPIP6) yielded expected high correlations with Agreeableness and Honesty-Humility. The Swedish translation of the full D70 and brief D16 is recommended for use in future research.

摘要

人格的黑暗因素（D）衡量对抗性特质的潜在核心。本研究评估了瑞典语版本的完整版（D70）和简短版（D16）的心理测量特性，涉及结构效度、项目信息和收敛效度。使用 CFA（最大似然估计）、IRT（分级响应模型）和 SEM（潜在相关性）对在线样本 ( N  = 294) 进行分析。首先，D70 的原始理论双因素模型和 D16 的单因素模型显示出与数据的良好拟合。此外，基于 FD 和H 的新可靠性分析表明 D70 可以有利地折叠成一维测度，这将进一步讨论。其次，IRT 分析呈现了有效的项目质量和功能，并表明项目提供了高于平均水平的特征水平的最多信息。最后，收敛 SEM 分析表明，D 与精神病态和马基雅维利主义具有高度的潜在特质相关性，但与自恋无关。与六大人格因素（mini-IPIP6）的相关性与宜人性和诚实谦逊产生了预期的高度相关性。建议在未来的研究中使用完整的 D70 和简短的 D16 的瑞典语翻译。