Deep dive into Meta's algorithms shows that America's political polarization has no easy fix

abcnews.go.com:

A team of some of the world's leading social media researchers has published four studies looking at the relationship between the algorithms used by Facebook and Instagram and America's widening political divide

WASHINGTON — The powerful algorithms used by Facebook and Instagram to deliver content to users have increasingly been blamed for amplifying misinformation and political polarization. But a series of groundbreaking studies published Thursday suggest addressing these challenges is not as simple as tweaking the platforms' software.

The four research papers, published in Science and Nature, also reveal the extent of political echo chambers on Facebook, where conservatives and liberals rely on divergent sources of information, interact with opposing groups and consume distinctly different amounts of misinformation.

Algorithms are the automated systems that social media platforms use to suggest content for users by making assumptions based on the groups, friends, topics and headlines a user has clicked on in the past. While they excel at keeping users engaged, algorithms have been criticized for amplifying misinformation and ideological content that has worsened the country's political divisions.

Proposals to regulate these systems are among the most discussed ideas for addressing social media's role in spreading misinformation and encouraging polarization. But when the researchers changed the algorithms for some users during the 2020 election, they saw little difference.

“We find that algorithms are extremely influential in people's on-platform experiences and there is significant ideological segregation in political news exposure,” said Talia Jomini Stroud, director of the Center for Media Engagement at the