Les personnes ne sont pas plus agressives sur les réseaux sociaux. Ils rendent juste visibles ceux qui le sont.

We found that people are not more hostile online than offline ; that hostile individuals do not preferentially select into online (vs. offline) political discussions

Online Trolls Actually Just Assholes All the Time, Study Finds, Gizmodo, 2021

et

New research suggests that the internet is not responsible for making people become more aggressive when engaging in political discussions online, but rather makes the behaviour of more aggressive people more visible.

Internet shown to amplify and expose real-life trolls, but not create them, Institution of Engineering and Technology, 2021

Qui sont des vulgarisations de l’étude suivante :

we test the mismatch hypothesis but only find evidence for limited selection effects. Instead, hostile political discussions are the result of status-driven individuals who are drawn to politics and are equally hostile both online and offline. Finally, we offer initial evidence that online discussions feel more hostile, in part, because the behavior of such individuals is more visible online than offline.

The Psychology of Online Political Hostility : A Comprehensive, Cross-National Test of the Mismatch Hypothesis, 2021 [preprint]