Neural Fingerprint of the Dark Triad: Resting State Functional Connectivity Alterations in Executive and Default Mode Networks
Richard Bakiaj, Clara Isabel Pantoja Muñoz, Alessandro Grecucci
Higher scores on the Dark Triad personality traits—narcissism, Machiavellianism, and psychopathy—are linked to distinct patterns of brain network activity. Analyzing resting-state brain scans from 200 participants (mean age 32.43 years; 105 females) with group Independent Component Analysis, two macro-networks predicted DT traits: the Central Executive Network (CEN) showed increased temporal variability, while the posterior hub of the Default Mode Network (DMN) showed decreased variability. Increased CEN activity may relate to enhanced strategic planning and manipulative abilities, particularly for Machiavellianism. Reduced DMN activity may correspond to diminished self-reflection and emotional capacities. The findings suggest specific neural correlates underlying these socially impactful traits.