Singer-songwriter Ed Sheeran recently announced he had quit Twitter because he was sick of internet trolls.
While this high-profile example shows the effects of antisocial online behaviour, it hides an alarming statistic.
In one online poll over a quarter of Americans admitted to having engaged in trolling at some point.
Now new research into the personality of trolls suggests building their empathy for others could be one way to modify their behaviour.
What is trolling?
We define trolling as deceptive and disruptive online behaviour, which typically involves posting inflammatory and malicious comments to deliberately provoke and upset people.
An example might be posting a deceitful and inflammatory post on a Facebook memorial page, deliberately designed to upset the person's family and friends.
Our definition of trolling is differ
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