Political Polarization
As the U.S. becomes increasingly politically polarized, many blame social media platforms for incentivizing outrage and escalating division. Our experts explore ways to quantify polarization and examine its impact on society.
Academic Research
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Working Paper
Misinformation Exposure Beyond Traditional Feeds: Evidence from a WhatsApp Deactivation Experiment in Brazil
Working Paper, May 2024
In most advanced democracies, concerns about the spread of misinformation are typically associated with feed-based social media platforms like Twitter and Facebook. These platforms also account for the vast majority of research on the topic. However, in most of the world, particularly in Global South countries, misinformation often reaches citizens through social media messaging apps, particularly WhatsApp. To fill the resulting gap in the literature, we conducted a multimedia deactivation experiment to test the impact of reducing exposure to potential sources of misinformation on WhatsApp during the weeks leading up to the 2022 Presidential election in Brazil. We find that this intervention significantly reduced participants’ exposure to false rumors circulating widely during the election. However, consistent with theories of mass media minimal effects, a short-term reduction in exposure to misinformation ahead of the election did not lead to significant changes in belief accuracy, political polarization, or well-being.
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Journal Article
The Effects of Facebook and Instagram on the 2020 Election: A Deactivation Experiment
Proceedings of the National Academy of Sciences, 2024
We study the effect of Facebook and Instagram access on political beliefs, attitudes, and behavior by randomizing a subset of 19,857 Facebook users and 15,585 Instagram users to deactivate their accounts for 6 wk before the 2020 U.S. election. We report four key findings. First, both Facebook and Instagram deactivation reduced an index of political participation (driven mainly by reduced participation online). Second, Facebook deactivation had no significant effect on an index of knowledge, but secondary analyses suggest that it reduced knowledge of general news while possibly also decreasing belief in misinformation circulating online. Third, Facebook deactivation may have reduced self-reported net votes for Trump, though this effect does not meet our preregistered significance threshold. Finally, the effects of both Facebook and Instagram deactivation on affective and issue polarization, perceived legitimacy of the election, candidate favorability, and voter turnout were all precisely estimated and close to zero.
Reports & Analysis
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Analysis
Reducing Exposure To Misinformation: Evidence from WhatsApp in Brazil
Deactivating multimedia on WhatsApp in Brazil consistently reduced exposure to online misinformation during the pre-election weeks in 2022, but did not impact whether false news was believed, or reduce polarization.
August 16, 2024
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Analysis
Which Republicans Are Most Likely to Think the Election Was Stolen?
Those who dislike Democrats and don’t mind white nationalists. That includes plenty of Republicans with college educations.
January 19, 2021
News & Commentary
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News
What CSMaP Experts Are Watching Ahead of the 2024 Election: Part Three
From Kamala Harris memes to the nationalization of elections to election denialism, part three of our new series highlights several areas we’re looking at this year.
July 31, 2024
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News
What CSMaP Experts Are Watching Ahead of the 2024 Election: Part Two
From foreign influence campaigns to the role of WhatsApp to social media data access, part two of our new series highlights several areas we’re looking at this year.
July 17, 2024