Psychologists examined Internet trolls and found that they are 'narcissistic, psychopathic, and sadistic'.

Psychologists examined Internet trolls and found that they are “narcissistic, psychopathic, and sadistic”.

The investigators found that Internet trolls tended to have personality traits related to sadism, psychopathy and Machiavellianism – a term used by psychologists to describe a person’s tendency to deceive and manipulate others for personal gain.

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