A preliminary study on the psychometric characteristics of the Construct Validity of Dark Triad Questionnaire

The Dark Triad scale is new tool for quick and easy recognition in the dark side of human nature. This study examined the Construct Validity of Dark Triad Questionnaire.
The population included all active users of email that 272 people using snowball sampling method was the selected as the sample. Data were analyzed using confirmatory factor analysis and software AMOS-22.
Cronbach's alpha was for machiavellianism 0.74, psychopathy 0.63, Narcissism 0.83, and item-total correlations were ranging from 0.042 to 0.90, indicating high internal consistency. The internal consistency using Cronbach's alpha, test-retest, the interscorer agreement and correlation question with total scores showed that the scale had good reliability. Examine the content validity and construct validity of the scale indicates the questionnaire were acceptable. Findings from confirmatory factor analysis as the main form three distinct but correlated factors revealed the following: machiavellianism, antisocial and narcissistic.
According to these results we can say that the dark aspects of the personality questionnaire valid and reliable instrument to measure of the Dark Triad in Iran.