A study of Internet trolls finds that they are often Machiavellian sadists:
The research, conducted by Erin Buckels of the University of Manitoba and two colleagues, sought to directly investigate whether people who engage in trolling are characterized by personality traits that fall in the so-called “Dark Tetrad”: Machiavellianism (willingness to manipulate and deceive others), narcissism (egotism and self-obsession), psychopathy (the lack of remorse and empathy), and sadism (pleasure in the suffering of others).
It is hard to underplay the results: The study found correlations, sometimes quite significant, between these traits and trolling behavior. What’s more, it also found a relationship between all Dark Tetrad traits (except for narcissism) and the overall time that an individual spent, per day, commenting on the internet.
Digby chimes in:
If you are a person who has spent any time online over the past few years, this is self-evident. There is little doubt that internet trolls, whether in comment sections or on twitter or forums, are psychopaths of some form or another. What’s always interested me more than that obvious observation is how otherwise normal people sometimes turn into such trolls when they feel marginalized or misunderstood. For some it’s clearly a very short trip from being a regular person just mixing it up for entertainment and becoming an internet terrorist. For others the journey is more circuitous. But I suspect that many of us could get in touch with an inner Dark Tetrad given enough time crawling around the fetid fever swamps of internet argument. I’ve seen it happen.
The Dish 