Introduction: The literature suggests that people can accurately infer dark triad (DT) personality traits from other peoples' faces. Using a self-report scale, this study investigated the impact of participants' DT personality traits on their ability to accurately infer other peoples' DT traits from facial cues.
Methods: We created composite facial photographs of Japanese people with varying Machiavellianism, psychopathy, and narcissism scores. The Japanese participants (N = 170) assessed these three DT traits in the facial photographs and completed a questionnaire that assessed their own DT traits.
Results: The results indicated that the participants could accurately infer all three DT traits from female faces but not from male faces. Male participants showed a positive correlation between accurate inferences of other men's Machiavellianism and their own DT traits. In contrast, female participants showed a negative correlation between correct inferences of men's DT traits and their own DT traits.
Discussion: These findings offer novel insights into human evolutionary and social adaptations.
Keywords: Machiavellianism; dark triad; face perception; narcissism; psychopathy.
Copyright © 2024 Masui, Yoshizumi and Nakajima.