Ominous Nine: Cross-Validation of the Nine Dark Personality Trait Model

The Nine Dark Model is an expanded model of the Dark pentad Traits, which has added egoism, self-interest, moral disengagement, and psychological entitlement to this set. The aim of study was to Cross-Validation of the nine dark personality traits model.

The research was descriptive-correlation. The research community was the students of Azarbaijan Shahid Madani University (6761 people including 4141 women and 2620 men) and the sample was 400 people (women=229 & men=171) who were selected voluntarily. The instruments included Dark Pentad Scale, Egoism Scale, Self-Interest Inventory, Moral Disengage Scale and Psychological Entitlement Scale. The data was analyzed by exploratory and confirmatory factor analysis using spss22 and LISREL8.

The results of exploratory factor analysis revealed spitfullness, self-interest, sadism, narcissism, psychological entitlement, egoism, moral disengagement, psychopathy, and Machiavellianism, which explained 58% of the variance. Confirmatory factor analysis indicated the confirmation of the nine-factor structure of the model; the fitness indices were h igher than 0.9. Internal consistency through Cronbach's alpha for components between 0.68 and 0.81 and the whole scale is 0.88 and through spilit-half for components between 0.64 and 0.79 and the whole scale is 0.81.

The scale of nine dark personality traits is a valid and reliable instrument for clinical and research situations.