Evidence map›Paper›PMID 27905402›Full record

ArticleScientific reports2016

Echo Chambers: Emotional Contagion and Group Polarization on Facebook.

Michela Del Vicario, Gianna Vivaldo, Alessandro Bessi, Fabiana Zollo, Antonio Scala, Guido Caldarelli, Walter Quattrociocchi

Abstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

103 citing papers in PubMed.

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  10. Interbrain Synchrony Mitigates Extremism Within Echo Chambers.Annals of the New York Academy of Sciences · 2025
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43 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Michela Del VicarioLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Gianna VivaldoLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Alessandro BessiLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Fabiana ZolloLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Antonio ScalaLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Guido CaldarelliLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.
Walter QuattrociocchiLaboratory of Computational Social Science, Networks Dept, IMT School for Advanced Studies, 55100 Lucca, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent findings showed that users on Facebook tend to select information that adhere to their system of beliefs and to form polarized groups - i.e., echo chambers. Such a tendency dominates information cascades and might affect public debates on social relevant issues. In this work we explore the structural evolution of communities of interest by accounting for users emotions and engagement. Focusing on the Facebook pages reporting on scientific and conspiracy content, we characterize the evolution of the size of the two communities by fitting daily resolution data with three growth models - i.e. the Gompertz model, the Logistic model, and the Log-logistic model. Although all the models appropriately describe the data structure, the Logistic one shows the best fit. Then, we explore the interplay between emotional state and engagement of users in the group dynamics. Our findings show that communities' emotional behavior is affected by the users' involvement inside the echo chamber. Indeed, to an higher involvement corresponds a more negative approach. Moreover, we observe that, on average, more active users show a faster shift towards the negativity than less active ones.

Indexed as

Social BehaviorSocial MediaSocial NetworkingCommunicationEmotionsHumansItalyLanguageLeast-Squares AnalysisRisk

Identifiers

PMID27905402
PMCPMC5131349

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.