Twitter has become a pervasive tool in election campaigns. Candidates, parties, journalists,
and a steadily increasing share of the public are using Twitter to comment on, interact …

Social media are often accused of worsening the quality of online debate. In this paper, we
focus on group polarization in the context of social media-enabled interaction, a …

This research examines the relationship between political homophily and organized trolling
efforts. This is accomplished by analyzing how Russian troll accounts were retweeted on …

Echo chambers in online social networks, in which users prefer to interact only with
ideologically-aligned peers, are believed to facilitate misinformation spreading and …

In order to explore the relationship between politics-related sentiment and FTSE 100
movements, we conducted a short-window event study of a UK based political event. We …

Abstract [Update: An updated version of this working papers has been published in 2016 by
Journal of Information Technology & Politics under the title" Twitter use in election …

Social media platforms attempting to curb abuse and misinformation have been accused of
political bias. We deploy neutral social bots who start following different news sources on …

Over the past decade, various online communication platforms have empowered citizens to
express themselves politically. Although the political impact of online citizen expression has …

Durante las últimas décadas, las redes sociales han transformado de forma relevante el
campo de la comunicación política. Partidos y políticos han incorporado estas plataformas …

Opinion polarization is on the rise, causing concerns for the openness of public debates.
Additionally, extreme opinions on different topics often show significant correlations. The …