Within Fact Checks
Why Myths Move Faster Than Corrections
False claims can be produced and reshared faster than careful fact-checks can investigate, explain, and reach the same audience.
On this page
- How false claims are made cheaply
- Why verification takes time and attention
- What speed means during crises
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Introduction
Fact-checking often begins only after a false claim has already attracted attention. By the time a correction is researched, written, reviewed and distributed, the original myth may have been copied across platforms, repeated by influential accounts and absorbed into public discussion. This timing problem helps explain why myths and misconceptions can remain influential even when reliable evidence is available.
Research consistently finds that false information can spread farther and faster than accurate information online. One of the most influential large-scale studies of social media diffusion found that false news reached more people, travelled more quickly and spread more broadly than truthful information across multiple categories of content. The researchers suggested that novelty and emotional appeal helped drive this advantage. [PubMed]pubmed.ncbi.nlm.nih.govPubMedThe spread of true and false news onlineby S Vosoughi · 2018 · Cited by 13949 — Falsehood diffused significantly farther, faster, d…
The result is a persistent speed gap: myths are cheap and rapid to produce, while careful corrections require verification, context and time.
How False Claims Are Made Cheaply
A viral myth does not need to be accurate to gain attention. It only needs to be interesting enough to share.
Creating a false claim is often straightforward. A misleading headline, a cropped image, an invented quotation or a misleading interpretation of a real event can be produced in minutes. The creator does not need to demonstrate accuracy before publication. Verification is somebody else’s problem.
This creates a structural advantage. A myth-maker can release dozens of claims while fact-checkers investigate one. During major events, such as elections, natural disasters or disease outbreaks, this imbalance becomes especially visible. New rumours appear continuously, while each correction requires evidence gathering, source checking and explanation. [Research Briefings]researchbriefings.files.parliament.ukResearch Briefings Disinformation: sources, spread and impactResearch BriefingsDisinformation: sources, spread and impactApril 26, 2024 — 25 Apr 2024 — Research indicates that disinformation can inf…
False claims also benefit from simplicity. A myth can often be expressed in a sentence, image or short video. The corrective version frequently requires additional context:
- What the original source actually said.
- Whether a photograph is genuine but mislabelled.
- Why a statistic is technically correct but misleading.
- What evidence is missing.
The correction is usually longer because reality is more complicated than the myth it replaces.
Why Verification Takes Time and Attention
Verification is slow because trustworthy information has costs that misinformation avoids.
A responsible correction may involve locating original documents, contacting experts, comparing multiple sources, checking dates, examining images and assessing uncertainty. Journalists, researchers and fact-checking organisations are expected to show how they reached their conclusions, not merely assert them.
This creates a timing disadvantage. A false claim can spread immediately, while a correction appears only after investigation. Even when the correction is accurate, it enters an information environment that has already been shaped by repetition of the myth.
The problem is not only production speed. It is also audience attention. A sensational claim can be consumed in seconds. A correction often requires readers to slow down, examine evidence and revise an earlier impression. That demands more effort than simply sharing an emotionally striking post.
Research on misinformation corrections repeatedly finds that fact-checks can reduce false beliefs, but their effects are often limited to the specific claims being corrected. Corrections are useful, yet they do not automatically create broad resistance to future myths. [ScienceDirect]sciencedirect.comScienceDirectDebunking “fake news” on social media: Immediate and…by LM Berger · 2025 · Cited by 18 — Specifically, while they are abl…
Why Repetition Gives Myths an Early Advantage
The first version of a story often becomes the reference point against which later information is judged.
When people encounter the same claim repeatedly, familiarity increases. A rumour seen ten times before a correction appears can feel more established than a correction encountered once afterward. This does not mean people consciously choose falsehoods. Rather, repetition increases the mental availability of information.
Psychologists describe a related phenomenon known as the continued influence effect. Even after misinformation has been corrected, parts of the original claim may continue to shape memory, reasoning or discussion. People may remember that a claim was disputed while still recalling the narrative that made it compelling in the first place. [PMC]pmc.ncbi.nlm.nih.govPMCExploring factors that mitigate the continued influencePMCby IP Kan · 2021 · Cited by 27 — The term “continued influence effect” (CIE) refers to the phenomenon that discredited and obsolete in… Nature Speed therefore matters twice: [nature.com]nature.comThe psychological drivers of misinformation belief and its…by UKH Ecker · 2022 · Cited by 1916 — In this Review, we describe the cogni…
- Early exposure shapes initial impressions.
- Repeated exposure strengthens familiarity before corrections arrive.
By the time a fact-check is published, it is often competing not with a single false statement but with many repetitions of that statement.
What Speed Means During Crises
The consequences of the speed gap become most visible during emergencies.
Health outbreaks, natural disasters, wars and elections create high demand for information. People seek immediate explanations, predictions and guidance. Unfortunately, those are precisely the conditions in which rumours flourish.
The World Health Organization describes these situations as “infodemics”—periods when large amounts of information, including false information, spread rapidly alongside a crisis. During such periods, misinformation can circulate widely before authorities have enough evidence to issue reliable guidance. [World Health Organization]who.intWorld Health OrganizationInfodemicRefining an AI-based infodemic observatory to assess the current status of misinformation and disinform… [World Health Organization]who.intWorld Health OrganizationInfodemicRefining an AI-based infodemic observatory to assess the current status of misinformation and disinform…
Studies of COVID-19 misinformation illustrate the challenge. Researchers found that misleading content often spread substantially more than content designed to correct it. One analysis reported that misinformation related to COVID-19 was shared on Twitter roughly three-and-a-half times more frequently than fact-checking content. [Open University]open.ac.ukmore…
In fast-moving situations, uncertainty creates a temporary vacuum. Myths can fill that vacuum immediately. Accurate information often arrives later because responsible communicators must first determine what is actually happening.
Why Faster Myths Create a Lasting Challenge
The key issue is not that corrections never work. Many do. The problem is that corrections enter the conversation after myths have already accumulated reach, repetition and emotional momentum.
A false claim can be created in minutes, amplified in hours and seen by millions before investigators finish checking the evidence. Research on information diffusion repeatedly shows that false stories often enjoy a measurable speed advantage over truthful ones, particularly when they appear novel, surprising or emotionally engaging. [PubMed]pubmed.ncbi.nlm.nih.govPubMedThe spread of true and false news onlineby S Vosoughi · 2018 · Cited by 13949 — Falsehood diffused significantly farther, faster, d… [MIT Sloan]mitsloan.mit.edustudy false news spreads faster truthMIT SloanStudy: False news spreads faster than the truthMar 8, 2018 — It uses the term “false news” instead of “fake news” because the la…
This means that fact-checking is often operating from behind. Corrections can reduce harm, but they must catch up with information that has already travelled through networks of friends, followers, influencers and news consumers. The speed gap does not make fact-checking useless; it explains why fact-checking alone struggles to stop myths once they have gone viral.
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Endnotes
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Source: news.mit.edu
Title: study twitter false news travels faster true stories 0308
Link: https://news.mit.edu/2018/study-twitter-false-news-travels-faster-true-stories-0308Source snippet
MIT NewsStudy: On Twitter, false news travels faster than true stories8 Mar 2018 — Researchers from the Media Lab and Sloan found that hu...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/science/article/pii/S004727272500043XSource snippet
ScienceDirectDebunking “[fake news]({{ 'fake-news/' | relative_url }})” on social media: Immediate and...by LM Berger · 2025 · Cited by 18 — Specifically, while they are abl...
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Source: pmc.ncbi.nlm.nih.gov
Title: PMCExploring factors that mitigate the continued influence
Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC8627545/Source snippet
PMCby IP Kan · 2021 · Cited by 27 — The term “continued influence effect” (CIE) refers to the phenomenon that discredited and obsolete in...
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Source: nature.com
Link: https://www.nature.com/articles/s44159-021-00006-ySource snippet
The psychological drivers of misinformation belief and its...by UKH Ecker · 2022 · Cited by 1916 — In this Review, we describe the cogni...
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Source: mitsloan.mit.edu
Title: study false news spreads faster truth
Link: https://mitsloan.mit.edu/ideas-made-to-matter/study-false-news-spreads-faster-truthSource snippet
MIT SloanStudy: False news spreads faster than the truthMar 8, 2018 — It uses the term “false news” instead of “fake news” because the la...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/science/article/pii/S0167923625001241Source snippet
Can correction messages reduce the spread of fake news...Read...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/topics/neuroscience/infodemicSource snippet
an overview | ScienceDirect TopicsAn 'infodemic' refers to the overwhelming abundance of information, including misinformation and disinf...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/science/article/pii/S2352250X23001574Source snippet
Effective correction of misinformationby T Prike · 2023 · Cited by 67 — Keywords. Misinformation. Correction. Fake news. [Debunking]({{ 'debunking/' | relative_url }}). Misin...
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Link: https://www.nature.com/articles/s41598-025-18457-1Source snippet
Assessing the impact of misinformation during the spread...by A Bernardin · 2025 · Cited by 4 — Our results show that even a modest infl...
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Source: youtube.com
Title: MIT Sloan Experts Series – Sinan Aral: The Truth About Fake News
Link: https://www.youtube.com/watch?v=T4enR0sWrLwSource snippet
The Continued Influence Effect - Why do memories of misinformation persist in our minds?...
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Source: youtube.com
Title: The Continued Influence Effect
Link: https://www.youtube.com/watch?v=eZ_hcf01EFwSource snippet
Why Continued Influence Effect is THE Most Important Phenomenon to Recognize...
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Source: pubmed.ncbi.nlm.nih.gov
Link: https://pubmed.ncbi.nlm.nih.gov/29590045/Source snippet
PubMedThe spread of true and false news onlineby S Vosoughi · 2018 · Cited by 13949 — Falsehood diffused significantly farther, faster, d...
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Source: researchbriefings.files.parliament.uk
Title: Research Briefings Disinformation: sources, spread and impact
Link: https://researchbriefings.files.parliament.uk/documents/POST-PN-0719/POST-PN-0719.pdfSource snippet
Research BriefingsDisinformation: sources, spread and impactApril 26, 2024 — 25 Apr 2024 — Research indicates that disinformation can inf...
Published: April 26, 2024
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Source: who.int
Link: https://www.who.int/health-topics/infodemicSource snippet
World Health OrganizationInfodemicRefining an AI-based infodemic observatory to assess the current status of misinformation and disinform...
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Source: who.int
Link: https://www.who.int/health-topics/infodemic/understanding-the-infodemic-and-misinformation-in-the-fight-against-covid-19Source snippet
World Health OrganizationUnderstanding the infodemic and misinformation...Infodemic · Listening to community concerns and questions · Pr...
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Source: who.int
Link: https://www.who.int/news-room/spotlight/let-s-flatten-the-infodemic-curveSource snippet
Let's flatten the infodemic curveIt helps to think of misinformation and disinformation spreading in the same way as viruses. One person...
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Source: open.ac.uk
Link: https://www.open.ac.uk/blogs/news/science-mct/misinformation-about-covid-19-spreads-faster-on-social-media-than-fact-checking-content/Source snippet
more...
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Source: science.org
Link: https://www.science.org/doi/10.1126/science.aap9559Source snippet
The spread of true and false news onlineby S Vosoughi · 2018 · Cited by 14032 — We investigated the differential diffusion of all of the...
Additional References
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Source: who.int
Link: https://www.who.int/europe/news/item/01-09-2022-infodemics-and-misinformation-negatively-affect-people-s-health-behaviours–new-who-review-findsSource snippet
Infodemics and misinformation negatively affect people's...1 Sept 2022 — The systematic review of published studies found 31 reviews tha...
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Source: sinanaral.medium.com
Link: https://sinanaral.medium.com/fake-news-about-our-fake-news-study-spread-faster-than-its-truth-just-as-we-predicted-77db6d9ca8c8Source snippet
News about our Fake News Study Spread Faster than its...Engber and Kuperschmidt's misinformation ended up proving our theory — and not j...
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Source: misinforeview.hks.harvard.edu
Link: https://misinforeview.hks.harvard.edu/article/who-reports-witnessing-and-performing-corrections-on-social-media-in-the-united-states-united-kingdom-canada-and-france/Source snippet
reports witnessing and performing corrections on...by R Tang · 2024 · Cited by 9 — Specifically, younger and more educated adults, as we...
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Source: research-information.bris.ac.uk
Link: https://research-information.bris.ac.uk/files/298563464/Ecker_v4_TSshorten_UE_clean.pdf -
Source: misinforeview.hks.harvard.edu
Link: https://misinforeview.hks.harvard.edu/article/the-small-effects-of-short-user-corrections-on-misinformation-in-brazil-india-and-the-united-kingdom/Source snippet
Misinformation ReviewThe small effects of short user corrections on...by S Altay · 2025 — We found that in India and Brazil, short user...
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Source: mediarelations.gwu.edu
Link: https://mediarelations.gwu.edu/new-international-study-shows-fact-checks-significantly-reduce-belief-misinformationSource snippet
International Study Shows [Fact Checks]({{ 'fact-checks/' | relative_url }}) Significantly...Sep 7, 2021 — According to the study, fact checks significantly reduced belief in...
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Source: pbs.org
Title: false news travels 6 times faster on twitter than truthful news
Link: https://www.pbs.org/newshour/science/false-news-travels-6-times-faster-on-twitter-than-truthful-newsSource snippet
Mar 9, 2018 — Baum adds that, given the inherent ambiguity of the language involved-including terms such as fake news, false news, misinf...
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Source: today.usc.edu
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reveals key reason why fake news spreads on social...Jan 17, 2023 — USC study reveals the key reason why fake news spreads on social media...
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Source: iris.paho.org
Link: https://iris.paho.org/items/2d166e60-045e-4bab-a396-6502de526e43Source snippet
the Infodemic and Misinformation in the fight...This is bound up with the collateral growth of misinformation, disinformation and malinf...
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Source: www150.statcan.gc.ca
Title: When they are aware, it is often referred to as disinformation.”.Read more
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spread of misinformation: A multivariate analysis of...Jul 25, 2024 — The sharer of misinformation may or may not be aware that it is mi...
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