We evaluate the empirical evidence interrogating the question of whether social media
erodes social cohesion. We look at how networks, information exchange, and norms operate …

This literature review examines cross-disciplinary work on radicalization to situate,
historicize, frame, and better understand the present concerns around online radicalization …

Social media may limit the exposure to diverse perspectives and favor the formation of
groups of like-minded users framing and reinforcing a shared narrative, that is, echo …

We offer comprehensive evidence of preferences for ideological congruity when people
engage with politicians, pundits, and news organizations on social media. Using 4 years of …

We are witnessing increasing partisan polarization across the world. It is often argued that
partisan “echo chambers” are one of the drivers of both policy and affective polarization. In …

The precise mechanisms by which the information ecosystem polarizes society remain
elusive. Focusing on political sorting in networks, we develop a computational model that …

In recent years, short videos have become an increasingly vital source of information. To
compete for users' attention, short video platforms have been overusing algorithmic …

Research revolving social media and democracy has exploded. For almost two decades,
scholarship has offered new theories, revisited some old ones, and provided empirical …

Background Shortly after the worst of the COVID-19 pandemic, an outbreak of mpox
introduced another critical public health emergency. Like the COVID-19 pandemic, the mpox …

Affective polarization—growing animosity and hostility between political rivals—has become
increasingly characteristic of Western politics. While this phenomenon is well-documented …