One of today's most controversial and consequential issues is whether the global uptake of
digital media is causally related to a decline in democracy. We conducted a systematic …

Collective behavior provides a framework for understanding how the actions and properties
of groups emerge from the way individuals generate and share information. In humans …

As humans, we navigate a multimodal world, building a holistic understanding from all our
senses. We introduce MERLOT Reserve, a model that represents videos jointly over time …

Content on Twitter's home timeline is selected and ordered by personalization algorithms.
By consistently ranking certain content higher, these algorithms may amplify some …

As humans, we understand events in the visual world contextually, performing multimodal
reasoning across time to make inferences about the past, present, and future. We introduce …

Digital media are critical for contemporary activism—even low-effort “clicktivism” is politically
consequential and contributes to offline participation. We argue that in the United States and …

Research in Fairness, Accountability, Transparency, and Ethics (FATE) 1 has established
many sources and forms of algorithmic harm, in domains as diverse as health care, finance …

TikTok is a video-sharing social networking service, whose popularity is increasing rapidly. It
was the world's second-most downloaded app in 2019. Although the platform is known for …

YouTube is the most used social network in the United States and the only major platform
that is more popular among right-leaning users. We propose the “Supply and Demand” …

Although it is under-studied relative to other social media platforms, YouTube is arguably the
largest and most engaging online media consumption platform in the world. Recently …