Creatures of the Night: Dark Triad and Night Owls

http://www.sciencedirect.com/science/article/pii/S0191886913001918

Highlights

• Dark Triad was linked to a night-time chronotype.

• Secondary but not primary psychopathy was linked to a night-time chronotype.

• Machiavellianism was linked to a night-time chronotype.

• Exploitive narcissism was linked to a night-time chronotype.

• Men scored higher on the Dark Triad traits, but no sex differences in chronotype.

In keeping with the predatory theme, perhaps it’s due to the lowered inhibitions of night-time activities and ease of predation due to self-weakening of normal people with alcohol, drugs, low sleep.