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Matteo Cinelli, Gianmarco De Francisci Morales, Alessandro Galeazzi, Walter Quattrociocchi, Michele Starnini
Social media may limit the exposure to diverse perspectives and favor the formation of groups of like-minded users framing and reinforcing a shared narrative, that is, echo chambers. However, the interaction paradigms among users and feed algorithms greatly vary across social media platforms. This paper explores the key differences between the main social media platforms and how they are likely to influence information spreading and echo chambers' formation. We perform a comparative analysis of more than 100 million pieces of content concerning several controversial topics (e.g., gun control, vaccination, abortion) from Gab, Facebook, Reddit, and Twitter. We quantify echo chambers over social media by two main ingredients: 1) homophily in the interaction networks and 2) bias in the information diffusion toward like-minded peers. Our results show that the aggregation of users in homophilic clusters dominate online interactions on Facebook and Twitter. We conclude the paper by directly comparing news consumption on Facebook and Reddit, finding higher segregation on Facebook.
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Cinelli, M., Morales, G. D. F., Galeazzi, A., Quattrociocchi, W., & Starnini, M. (2021). The echo chamber effect on social media. Proceedings of the National Academy of Sciences, 118(9). https://doi.org/10.1073/pnas.2023301118
Cinelli, Matteo, et al. "The echo chamber effect on social media." Proceedings of the National Academy of Sciences, vol. 118, no. 9, 2021, https://doi.org/10.1073/pnas.2023301118.
Cinelli, Matteo, Gianmarco De Francisci Morales, Alessandro Galeazzi, Walter Quattrociocchi, and Michele Starnini. "The echo chamber effect on social media." Proceedings of the National Academy of Sciences 118, no. 9 (2021). https://doi.org/10.1073/pnas.2023301118.
Cinelli M., Morales G. D. F., Galeazzi A. [и др.] The echo chamber effect on social media // Proceedings of the National Academy of Sciences. — 2021. — Vol. 118, № 9. — URL: https://doi.org/10.1073/pnas.2023301118
@article{cinelli2021echo,
title = {{The echo chamber effect on social media}},
author = {Matteo Cinelli and Gianmarco De Francisci Morales and Alessandro Galeazzi and Walter Quattrociocchi and Michele Starnini},
journal = {Proceedings of the National Academy of Sciences},
year = {2021},
volume = {118},
number = {9},
doi = {10.1073/pnas.2023301118},
url = {https://doi.org/10.1073/pnas.2023301118}
}TY - JOUR AU - Cinelli, Matteo AU - Morales, Gianmarco De Francisci AU - Galeazzi, Alessandro AU - Quattrociocchi, Walter AU - Starnini, Michele TI - The echo chamber effect on social media JO - Proceedings of the National Academy of Sciences VL - 118 IS - 9 PY - 2021 DA - 2021/02/23 DO - 10.1073/pnas.2023301118 UR - https://doi.org/10.1073/pnas.2023301118 ER -
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