Hugh Pickens DOT Com writes "Chris Mooney reports at Slate that research conducted by Erin Buckels of the University of Manitoba confirmed that people who engage in internet 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). In the study, trolls were identified in a variety of ways. One was by simply asking survey participants what they 'enjoyed doing most' when on online comment sites, offering five options: 'debating issues that are important to you,' 'chatting with others,' 'making new friends,' 'trolling others,' and 'other.' The study recruited participants from Amazon's Mechanical Turk website and two measures of sadistic personality were administered (PDF): the Short Sadistic Impulse Scale and the Varieties of Sadistic Tendencies Scale. Only 5.6 percent of survey respondents actually specified that they enjoyed 'trolling.' By contrast, 41.3 percent of Internet users were 'non-commenters,' meaning they didn't like engaging online at all. So trolls are, as has often been suspected, a minority of online commenters, and an even smaller minority of overall Internet users. Overall, the authors found that the relationship between sadism and trolling was the strongest, and that indeed, sadists appear to troll because they find it pleasurable. 'Both trolls and sadists feel sadistic glee at the distress of others. Sadists just want to have fun ... and the Internet is their playground!' The study comes as websites are increasingly weighing steps to rein in trollish behavior but the study authors aren't sure that fix is a realistic one. 'Because the behaviors are intrinsically motivating for sadists, comment moderators will likely have a difficult time curbing trolling with punishments (e.g., banning users),' says Buckels. 'Ultimately, the allure of trolling may be too strong for sadists, who presumably have limited opportunities to express their sadistic interests in a socially-desirable manner.' Perhaps posting rights should only be unlocked if you pass a test."