Research
CSMaP is a leading academic research institute studying the ever-shifting online environment at scale. We publish peer-reviewed research in top academic journals, produce rigorous reports and analyses on policy relevant topics, and develop open source tools and methods to support the broader scholarly community.
Academic Research
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Journal Article
Labeling Social Media Posts: Does Showing Coders Multimodal Content Produce Better Human Annotation, and a Better Machine Classifier?
Labeling Social Media Posts: Does Showing Coders Multimodal Content Produce Better Human Annotation, and a Better Machine Classifier? (Duplicated)
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Working Paper
The Effect of Deactivating Facebook and Instagram on Users’ Emotional State
Working Paper, April 2025
We estimate the effect of social media deactivation on users’ emotional state in two large randomized experiments before the 2020 U.S. election. People who deactivated Facebook for the six weeks before the election reported a 0.060 standard deviation improvement in an index of happiness, depression, and anxiety, relative to controls who deactivated for just the first of those six weeks. People who deactivated Instagram for those six weeks reported a 0.041 standard deviation improvement relative to controls. Exploratory analysis suggests the Facebook effect is driven by people over 35, while the Instagram effect is driven by women under 25.
Reports & Analysis
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Analysis
Who Has a Policy that Would Benefit You? More Voters Say Trump.
National survey data from the 2016, 2020, and 2024 elections shed light on how candidates' campaign strategies impact voter policy recall.
November 2, 2024
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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
Data Collections & Tools
As part of our project to construct comprehensive data sets and to empirically test hypotheses related to social media and politics, we have developed a suite of open-source tools and modeling processes.