Braun Stéphanie, Kempenaers Chantal, Linkowski Paul, Loas Gwenolé
Department of Psychiatry, Erasmus Hospital, Université Libre de Bruxelles Brussels, Belgium.
Front Psychol. 2016 Dec 23;7:1980. doi: 10.3389/fpsyg.2016.01980. eCollection 2016.
The Narcissistic Personality Inventory (NPI) is the most widely used self-report scale to assess the construct of narcissism, especially in its grandiosity expression. Over the years, several factor models have been proposed in order to improve the understanding of the multidimensional aspect of this construct. The available data are heterogeneous, suggesting one to at least seven factors. In this study, we propose a French adaptation of the NPI submitted to a sample of Belgian French-speaking students ( = 942). We performed a principal component analysis on a tetrachoric correlation matrix to explore its factor structure. Unlike previous studies, our study shows that a first factor explains the largest part of the variance. Internal consistency is excellent and we reproduced the sex differences reported when using the original scale. Correlations with social desirability are taken into account in the interpretation of our results. Altogether, the results of this study support a unidimensional structure for the NPI using the total score as a self-report measure of the Narcissistic Personality Disorder in its grandiose form. Future studies including confirmatory factor analysis and gender invariance measurement are also discussed.
自恋人格问卷（NPI）是评估自恋结构，尤其是其夸大表现最广泛使用的自陈量表。多年来，为了更好地理解这一结构的多维度特性，人们提出了几种因素模型。现有数据参差不齐，表明有一到七个因素。在本研究中，我们对NPI进行了法语改编，并将其应用于一组比利时法语区学生样本（n = 942）。我们对四分相关矩阵进行了主成分分析，以探究其因素结构。与以往研究不同，我们的研究表明，第一个因素解释了大部分方差。内部一致性极佳，我们重现了使用原始量表时报告的性别差异。在解释我们的结果时考虑了与社会赞许性的相关性。总体而言，本研究结果支持将NPI的总分作为自恋型人格障碍夸大形式的自陈测量指标时的单维结构。还讨论了包括验证性因素分析和性别不变性测量在内的未来研究。
