A new psychology paper http://www.sciencedirect.com/science/article/pii/S0191886914000324 studied the personalities of those who engage in trolling (known in some quarters as "pushing buttons") on the Internet:
"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)." Read more: http://www.slate.com/articles/health_and_science/climate_desk/2014/02/internet_troll_personality_study_machiavellianism_narcissism_psychopathy.html http://www.slate.com/articles/health_and_science/climate_desk/2014/02/internet_troll_personality_study_machiavellianism_narcissism_psychopathy.html
