Psychologists have long studied the 'dark triad' of personality: psychopathy, narcissism, and Machiavellianism. But research now points to a deeper, unifying force.
A 2018 study by German and Danish psychologists identified a central core they call the D Factor, or the Dark Factor of Personality. This single dispositional tendency is the common denominator behind a range of dark traits, including egoism, sadism, and spitefulness.
The concept mirrors the 'g factor' in intelligence-a general cognitive ability. Similarly, the D Factor suggests a general propensity for malevolent behavior.
A longitudinal study found the D Factor is the most stable personality measure over time, more consistent than any individual dark trait. Research also shows a clear link to career paths: individuals with high D scores are significantly less likely to choose or want social professions like teaching or nursing.
Further research indicates the D Factor varies not just between individuals, but between societies. Toxic social conditions correlate with higher collective measures of dark personality.
Scientists believe understanding a person's D score could eventually aid in fields like criminal psychology and risk assessment.