[Eirykr]

According to this Slate article:

http://www.slate.com/articles/health_and...pathy.html

Quote:

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.” Here’s how different responses about these Internet commenting preferences matched up with responses to questions designed to identify Dark Tetrad traits: