Published in: Trends in Cognitive Sciences, Volume 22, Issue 3, 213-224 Abstract Over 2 billion people use social media every day, and many use it to read and discuss politics. Social media also facilitate the spread of fake news and hyper-partisan content. Online discussions of politicized topics, including political events and issues (e.g., same-sex marriage, climate change, gun control), resemble an echo chamber. That is, posts on these topics are shared primarily by people with similar ideological preferences. Political polarization is most likely when users employ moral/emotional language. This may reflect ideological differences between people on the left versus right… Read More