Exhibit 727

Asymmetric ideological segregation in exposure to political news on Facebook

Exhibit 727 · Peer-reviewed study

Asymmetric ideological segregation in exposure to political news on Facebook

most misinformation, as identified by Meta’s Third-Party Fact-Checking Program, exists within this homogeneously conservative corner, which has no equivalent on the liberal side.

Aggregated data for 208 million US Facebook users, 2020. Segregation rises from potential exposure to actual exposure to engagement; conservative-only news corner holds most fact-checked misinformation.

Source: Gonzalez-Bailon, Lazer, Barbera, Zhang, Allcott, Brown et al. (Science)
Date: 28 July 2023
Quoted from: Abstract
Grade: Peer-reviewed
Document: https://doi.org/10.1126/science.ade7138
Accessed: 2026-11-09
Cited by: Findings citing this exhibit

Cited by

Finding POL-3.6: Peer-reviewed Twitter's own audit found that the mainstream political right was amplified more than the mainstream left in six of seven countries and found no evidence that algorithms amplify extreme groups more than moderate ones. An analysis of 208 million U.S. Facebook users found that ideological segregation rises from potential exposure to engagement, and that most misinformation identified by Meta's fact-checking program sat in a homogeneously conservative corner with no liberal equivalent.