This means that while antisocial personality traits do play a role, what really influences trolling behaviour is the social pleasure derived from knowing that others are annoyed by it. The more negative social impact the troll has, the more their behaviour is reinforced.
Happily, this discovery suggests an easy way to deal with trolls: ignore them, rather than giving them the satisfaction of an angry reaction.
Individuals seeking a negative social reward may still engage in trolling. But if they don’t receive that negative social reward, then their motivation to engage in this behaviour will likely diminish.
So it appears that the classic internet adage really does hold true: don’t feed the trolls. Deny them the pleasure of an angry reaction, and they’ll probably leave you alone.