Cited by 235Misinformation and Its ImpactsMobile Crowdsensing and CrowdsourcingSpam and Phishing Detection

Scaling up fact-checking using the wisdom of crowds

Open access
Allen, Jennifer, Arechar, Antonio A., Pennycook, Gordon, Rand, David G.·2021·Science Advances

Abstract

When rating articles’ accuracy, a small politically balanced crowd of laypeople yields high agreement with fact-checkers.

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Registry

Crossref · 10.1126/sciadv.abf4393

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58 of 58 references verified0 citation errors · 0 not checkable

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  • Community Notes achieves high identification accuracy enabled by the wisdom of crowds.

    “and (ii) it achieves high identification accuracy enabled by the wisdom of crowds (Drolsbach and Pr¨ ollochs 2023a; Allen et al. 2021; Martel et al. 2024)”

    From Characterizing AI-Generated Misinformation on Social Media (2025) · cites this paper as Allen et al. 2021

    The Discussion (page unavailable) reports that a small, politically balanced crowd identified misinformation with performance matching professional fact-checkers. But the study tested people assigned specific articles to rate, not Community Notes; the Discussion explicitly says it is unclear whether the findings generalize to Twitter’s Birdwatch, where participants choose what to rate. It therefore supports the wisdom-of-crowds mechanism, not the claim about Community Notes’ identification accuracy. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Crowd-based approaches can achieve accuracy levels comparable to experts and overcome scalability issues.

    “Yet, evidence from studies on traditional misinformation shows that crowd-based approaches, where multiple judgments are aggregated, can achieve accuracy levels comparable to those of experts and overcome scalability issues (Allen et al. 2021; Martel et al. 2024; Drolsbach and Pr¨ ollochs 2023a; He et al. 2025; Pilarski and Pr¨ ollochs 2026).”

    From Characterizing AI-Generated Misinformation on Social Media (2025) · cites this paper as Allen et al. 2021

  • Averaged responses of ordinary people are on par with third-party fact-checkers for both factual claims in articles and overall accuracy of content from URL domain names.

    “Recent empirical research finds that averaged responses of ordinary people are on par with third-party fact-checkers for both factual claims in articles (47) and overall accuracy of content from URL domain names (48, 49).”

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Authors
Allen, J., Arechar, A. A., Pennycook, G., & Rand, D. G.
Affiliations
  • Massachusetts Institute of Technology (US)
  • University of Nottingham (GB)
  • University of Regina (CA)
Corresponding author
  • Allen, Jennifer
  • Arechar, Antonio A.
  • Rand, David G.
Venue
Science Advances
Published
2021-09-03
Volume
7
Issue
36
Pages
eabf4393-eabf4393
ISSN
2375-2548 (ISSN-L)
OpenAlex
W3172233798
Cited by
234
References
56
Citations by year
2026: 44 · 2025: 47 · 2024: 48 · 2023: 45 · 2022: 33 · 2021: 15 · 2020: 2
FWCI
49.20
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Science Advances (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • PsyArXiv (OSF Preprints) (submittedVersion)
  • OSF Preprints (OSF Preprints) (submittedVersion)
  • PsyArXiv (OSF Preprints) (submittedVersion, cc-by)
Funders
John Templeton Foundation (61061)
Topics
  • Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
  • Physical Sciences › Computer Science › Computer Science Applications › Mobile Crowdsensing and Crowdsourcing
  • Physical Sciences › Computer Science › Information Systems › Spam and Phishing Detection
Keywords
fact-checking, misinformation, crowdsourcing, wisdom of crowds, laypeople, political balance, Facebook, news headlines, cognitive reflection, political knowledge, partisanship

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