Assessing the dark side of personality: Psychometric evidences of the dark triad dirty dozen

Valdiney Veloso Gouveia, Renan Pereira Monteiro, Rildésia Silva Veloso Gouveia, Rebecca Alves Aguiar Athayde, Thiago Medeiros Cavalcanti


This study aimed to gather evidences of validity and reliability of the Dark Triad Dirty Dozen (DTDD). Two studies were performed. In Study 1, participants were 207 people from the general population, who answered the DTDD and the Big Five Inventory. A Principal Component analysis revealed a three-factor structure: Machiavellianism (α = 0.85), narcissism (α = 0.84) and psychopathy (α = 0.72), which were negatively correlated with agreeableness. In study 2, participants were 300 people from the general population, who answered the DTDD. A confirmatory factor analysis supported the bifactor model (e.g., CFI = 0.95; TLI = 0.92; and RMSEA = 0.07). In conclusion, this measure shows acceptable psychometric parameters, justifying its use to research purposes.


Personality; dark triad; big five; scale; validity.


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