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Matthew Facciani

@matthewfacciani.bsky.social
24K followers 1.5K following 2.9K posts

Social scientist @yalesph.bsky.social exploring how we form beliefs and make sense of health information in the age of AI. Author of Misguided. amzn.to/48zTs59 matthewfacciani.substack.com www.matthewfacciani.com

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Matthew Facciani @matthewfacciani.bsky.social · 14h
It’s not only algorithms that favor outspoken political content. People also expect social media to be a place for stronger, more outspoken views, which can make nuanced perspectives seem less fitting. www.emerald.com/oir/article-...
emerald.com
The limits of nuance: how social media undermine nuanced political communication
Purpose. This study investigates how social media environments shape evaluations of political information, focusing on whether nuanced viewpoints are devalued relative to more outspoken, radical expre...
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Matthew Facciani @matthewfacciani.bsky.social · 14h
New UK study finds that people had much more confidence in scientists in academia than in scientists working in government or in private companies. www.nature.com/articles/d41...
nature.com
People trust scientists seen to be ‘on their side’, UK study finds
Politics and personal values influence people’s confidence in scientists, according to a report.
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Matthew Facciani @matthewfacciani.bsky.social · 15h
Jack Smith’s testimony was a major historic event, yet much of the attention on social media is going to Eric Schmidt’s epic Hawks vs. Hawkeyes blunder.
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Matthew Facciani @matthewfacciani.bsky.social · 15h
In studies from Turkey and South Korea, accuracy reminders and credible sources helped people respond to corrections, especially for scientific misinformation. However, these effects depended on how important the issue was to them. link.springer.com/article/10.1...
link.springer.com
Source credibility and issue type effects in misinformation correction in two non-western countries - Acta Politica
This paper investigates how individuals respond to corrective interventions based on accuracy nudges and source credibility cues, with a particular focus on how these effects vary across issue types a...
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Matthew Facciani @matthewfacciani.bsky.social · 29/09/2026
Here is an online class that teaches you how to fact-check directly from fact-checking professionals! Six lessons and only $49. www.poynter.org/shop/fact-ch...
poynter.org
Fact-Checking for Everyone - Poynter
Learn fact-checking skills online with Poynter. Verify claims, evaluate sources and navigate misinformation and AI-generated content.
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Matthew Facciani @matthewfacciani.bsky.social · 28/09/2026
"The first study of its kind shows deaths have fallen sharply since school-age girls began being offered it in 2008, and around 200 lives have been saved in England so far thanks to the vaccine" www.bbc.com/news/article...
bbc.com
HPV vaccine means young women now have 'close to zero' risk of cervical cancer death
A new study finds that hundreds of lives have been saved since school-age girls were offered the HPV jab in 2008.
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Matthew Facciani @matthewfacciani.bsky.social · 28/09/2026
In early 2025, more Republicans identified primarily as Trump supporters than as Republicans (59% vs. 36%). Now, that has reversed, with 56% identifying primarily with the Republican Party and 34% with Trump. www.newsweek.com/donald-trump...
newsweek.com
Trump’s support suffers complete reversal with Republicans
Republicans now identify more with the GOP than Trump, a sharp reversal that could reshape the party’s midterm campaign strategy.
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Matthew Facciani @matthewfacciani.bsky.social · 28/09/2026
New analysis of conservative influencer content reveals a sharp drop in Trump discussions, instead the content has often focused on James Talarico and the Lindsay Clancy trial. www.wsj.com/politics/ele...
wsj.com
MAGA Podcasters Are Tuning Out Trump. We Tracked What They Are Talking About Now.
The Wall Street Journal analyzed nearly 70,000 hours of podcasts, using a new AI tool, to find out why conservative creators appear to be losing interest in the president.
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Matthew Facciani @matthewfacciani.bsky.social · 27/09/2026
New open-access book available that evaluates public health interventions from around the world! uclpress.co.uk/book/evaluat...
uclpress.co.uk
Evaluating Public Health Interventions
Public health interventions include any effort or policy that attempts to improve the health among individuals or an entire population. They can be run by governmental health departments or non-govern...
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Matthew Facciani @matthewfacciani.bsky.social · 27/09/2026
Why do smart people believe false things? A lot of it comes down to identity. When a belief is tied to who we are, we defend it even when the evidence says we shouldn't. matthewfacciani.substack.com/p/week-2-ide...
matthewfacciani.substack.com
Class 2: Identity, Belonging, and Belief
This week’s video dives into identity and belonging, and how these shape what we believe.
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Matthew Facciani @matthewfacciani.bsky.social · 26/09/2026
A four-wave study in Sweden found that conspiracy thinking, use of right-wing alternative media, and social media reinforce each other over time. In contrast, mainstream news use was associated with lower levels of conspiracy thinking. www.tandfonline.com/doi/full/10....
tandfonline.com
Breeding conspiracy thinking? Investigating the longitudinal relationship between media use and conspiracy mindset
Over the last decade, conspiracy theories and beliefs in them have become a more pressing social and political problem. Despite different media being the main channels through which conspiracy theo...
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Matthew Facciani @matthewfacciani.bsky.social · 25/09/2026
Before you reply to a comment on social media, ask yourself: Does this person seem genuinely open to a conversation and curious about other viewpoints, or are they simply venting and processing their feelings? You don’t need to waste your time when someone just wants to shout into the void.
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Matthew Facciani @matthewfacciani.bsky.social · 25/09/2026
Looking forward to giving this presentation next week! The title is “Trust Issues: Why We Believe What We Believe and What It Means for Public Health.” It's open to the public & freely available online. uwm.edu/publichealth...
uwm.edu
Zilber College Public Health Seminar - Trust Issues: Why We Believe What We Believe and What It Means for Public Health
Explore how trust shapes what we believe and what those beliefs mean for public health communication, policy and practice.
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Matthew Facciani @matthewfacciani.bsky.social · 24/09/2026
As we enter an era when people increasingly turn to AI chatbots for advice, I think we may see a renewed value in publishing on credible websites and in established outlets, since these are the sources AI systems often draw on.
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Matthew Facciani @matthewfacciani.bsky.social · 24/09/2026
RFK Jr. received $4 million in book advances from MAHA allies over the past year, despite pledging in his 2024 ethics filing not to engage in writing, editing, marketing, or promotional services for any of these books while serving in government.
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Matthew Facciani @matthewfacciani.bsky.social · 23/09/2026
New global polling finds that people are much more likely to say AI will increase than decrease the gap between the rich and poor. In the United States, 46% say AI will increase economic inequality, compared with just 5% who say it will decrease it.
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Matthew Facciani @matthewfacciani.bsky.social · 23/09/2026
"The study further reveals that social media literacy significantly influences students’ perceived competence in identifying deepfake videos and notes that education plays an important role in enhancing digital discernment." journals.plasu.edu.ng/index.php/pj...
journals.plasu.edu.ng
Perceived Influence of Social Media Literacy on Detecting Deepfake Content on TikTok Among Mass Communication Undergraduates in Kwara State | PLASU Journal of Communication Studies
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Matthew Facciani @matthewfacciani.bsky.social · 22/09/2026
New interview with Dean Megan Ranney on the Edelman Trust survey! Really cool to be part of this project, and I’m looking forward to the future studies ahead. news.yale.edu/2026/09/17/t...
news.yale.edu
Trust and health: New report examines why patients don’t always follow doctors
A new report from Yale School of Public Health and the Edelman Trust Institute reveals the complex factors underlying how personal beliefs about health come to be.
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Matthew Facciani @matthewfacciani.bsky.social · 21/09/2026
New study suggests that teaching people to trust "reliable" outlets or distrust "unreliable" ones (e.g., NewsGuard-style tools) probably won't fix partisan misinformation belief, because people accept or reject claims based on whether the claims fit their politics, not based on who's reporting them.
researchgate.net
(PDF) A Signal Detection Analysis of Source Effects on Misinformation Susceptibility
PDF | Signal Detection Theory suggests that people may fall for misinformation because they are unable to discern true from false information (i.e., low... | Find, read and cite all the research you n...
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Matthew Facciani @matthewfacciani.bsky.social · 20/09/2026
My new online course, "Why People Believe Different Things and How to Talk to Them," is now live! It's a 6-week course with weekly videos and live Q&As. It's not too late to join! Lecture 1 here: matthewfacciani.substack.com/p/class-1-wh...
matthewfacciani.substack.com
Class 1: Why We Believe What We Believe
Introducing my new course and how identity and community shape what we believe
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Reposted by Matthew Facciani
Matthew Facciani @matthewfacciani.bsky.social · 17/09/2026
New analysis with the Edelman Trust Institute and my colleagues at Yale School of Public Health. Nearly 13,000 people across 13 countries, on how they decide what to believe about their health. Here's what we found! 🧵
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Matthew Facciani @matthewfacciani.bsky.social · 17/09/2026
A new study interviewed German science journalists and asked them how to cover uncertainty. They suggest that the best way to communicate scientific uncertainty is to be upfront about it early, clearly explain what we know and don’t know (and why), and acknowledge when new evidence changes the story
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Matthew Facciani @matthewfacciani.bsky.social · 17/09/2026
New analysis with the Edelman Trust Institute and my colleagues at Yale School of Public Health. Nearly 13,000 people across 13 countries, on how they decide what to believe about their health. Here's what we found! 🧵
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Matthew Facciani @matthewfacciani.bsky.social · 15/09/2026
For the past few months, I've been working with the Edelman Trust Institute and my colleagues at the Yale School of Public Health on new global trust survey. It's now available here! www.edelman.com/2026-edelman...
edelman.com
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Matthew Facciani @matthewfacciani.bsky.social · 15/09/2026
It's pretty clear that AI deepfakes should be banned from political ads, but I worry that something truly terrible will have to happen before Congress does anything.
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Matthew Facciani @matthewfacciani.bsky.social · 15/09/2026
New study on conspiracy theories finds that telling people 'most others don't believe this' shrinks belief, but only when the theory is unpopular. However, the same approach probably won't work (and might even backfire) for genuinely popular theories (JFK or Epstein).
onlinelibrary.wiley.com
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Matthew Facciani @matthewfacciani.bsky.social · 15/09/2026
More research showing how people are more likely to believe misinformation that aligns with their social identities, especially when those identities are strong, and brief interventions may do little to change this. onlinelibrary.wiley.com/doi/abs/10.1...
onlinelibrary.wiley.com
Social Identities Increase Susceptibility to Congruent Misinformation: Testing Accuracy‐Norm and Identity Metacognitive Interventions
Cognitive processes underlying beliefs are central to the adoption of misinformation, yet how social identities shape them remains relatively underexplored. In a preregistered experiment (N = 455), w...
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Matthew Facciani @matthewfacciani.bsky.social · 14/09/2026
Have you ever wondered why someone believes what they do? Maybe a wild conspiracy theory, or something with zero evidence behind it? I'm sharing an online course on exactly that: the psychology of belief, and how to actually talk to someone who sees it differently than you.
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Matthew Facciani @matthewfacciani.bsky.social · 11/09/2026
In my latest podcast episode, I speak with Andrea Ellis, a former wellness influencer who left that world despite the massive financial opportunities. A really insightful overview into the wellness economy and ecosystem! matthewfacciani.substack.com/p/what-welln...
matthewfacciani.substack.com
What Wellness Influencers Don't Want You to Know
Andrea Ellis joins me to discuss the hidden incentives behind wellness influencers, how faith and conspiracy thinking intersect in this space, and how she now advocates for media literacy.
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Matthew Facciani @matthewfacciani.bsky.social · 10/09/2026
The Riverside fm AI is terrible. Adding an incompetent AI chatbot while removing the previously easy-to-use manual editing features makes me want to switch platforms entirely.
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Matthew Facciani @matthewfacciani.bsky.social · 10/09/2026
Trump's approval has been low among independents and left-leaning voters, but he has now lost the most support among the more moderate, right-leaning groups that backed him in 2024.
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Matthew Facciani @matthewfacciani.bsky.social · 10/09/2026
Older adults’ greater engagement with misinformation is less about being unable to recognize false claims and more about political identity, social networks, and the media environment. Most low-credibility content studied leaned right, which especially increased engagement among older conservatives.
global.oup.com
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Matthew Facciani @matthewfacciani.bsky.social · 09/09/2026
Hunter Biden's meme coin dropped 98% within minutes and is now down 99% from launch price.
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Matthew Facciani @matthewfacciani.bsky.social · 09/09/2026
The iPhone Duo looks really cool, but I’m not sure it’s practical or worth $2,000 unless you’re someone who would use the Apple Pencil heavily in your day-to-day life.
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Matthew Facciani @matthewfacciani.bsky.social · 09/09/2026
Independent media replaces corporate capture with attention capture. Instead of being beholden to the advertising dollars of large corporations, they are beholden to the algorithms of tech companies.
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Reposted by Matthew Facciani
Matthew Facciani @matthewfacciani.bsky.social · 08/09/2026
One of the questions I hear most often: how do I talk to someone who believes something completely different from me? So I built a 6-week course around it! Starting September 20 we will dive into why we believe what we believe, why we trust who we trust, and how to actually have the conversation.
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Matthew Facciani @matthewfacciani.bsky.social · 08/09/2026
One of the questions I hear most often: how do I talk to someone who believes something completely different from me? So I built a 6-week course around it! Starting September 20 we will dive into why we believe what we believe, why we trust who we trust, and how to actually have the conversation.
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Matthew Facciani @matthewfacciani.bsky.social · 08/09/2026
New poll finds that practicing Christians are more than twice as likely as non-practicing Christians to say they use AI “very often” in their personal lives.
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Matthew Facciani @matthewfacciani.bsky.social · 08/09/2026
I was a co-author on this Cell article advocating for science communication and offering practical guidance for scientists who want to start doing science outreach. www.cell.com/cell/abstrac...
cell.com
Modern science outreach: A guide for scientists
This paper outlines six actionable practices to help scientists effectively reach and engage broad audiences, with a focus on leveraging modern media and emerging dissemination channels. We encourage ...
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Matthew Facciani @matthewfacciani.bsky.social · 07/09/2026
New study finds people who mainly use AI chatbots for companionship tend to report lower well-being, especially if they have fewer friends or social connections. The link is stronger when people spend a lot of time talking to the chatbot or share more personal information with it.
nature.com
Interaction with AI companions and psychological well-being - Nature Human Behaviour
In this mixed-methods study, Zhang et al. examine AI companionship and psychological well-being, finding that the association depends on usage patterns and users’ offline social contexts.
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Matthew Facciani @matthewfacciani.bsky.social · 04/09/2026
This is a fun thing to see who people deem influential on here. Also, useful datapoint for social media researchers
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Matthew Facciani @matthewfacciani.bsky.social · 04/09/2026
I added Cloudflare Turnstile to my website to try and prevent AI agent (and other) spam. It checks mouse movement, timing, and a tiny on-device puzzle instead of a CAPTCHA. An AI agent got caught clicking through one this summer, so even "prove you're human" tech is now in its own arms race.
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Matthew Facciani @matthewfacciani.bsky.social · 04/09/2026
Instead of a final paper, four @yalesph.bsky.social students course built Show Me the Evidence, a six-episode podcast on vaccine hesitancy. Awesome to see these innovative teaching methods for the modern public health landscape! ysph.yale.edu/news-article...
ysph.yale.edu
From Classroom to Conversation: YSPH students produce six-part series on vaccine hesitancy
Four YSPH students responded to an unconventional challenge from Assistant Professor Kristina Talbert-Slagle, PhD. Instead of a final paper, build something
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Matthew Facciani @matthewfacciani.bsky.social · 03/09/2026
Congrats to @pablo.show and his team! The NBA's penalties against the Clippers this week are a direct result of the reporting that won them the Pulitzer. Torre uncovered how the team allegedly used a sponsor as a backdoor to pay Kawhi Leonard extra money outside the salary cap.
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Matthew Facciani @matthewfacciani.bsky.social · 03/09/2026
It's amazing how slow large institutions can be when they owe you money, but how fast they are when it's time to take your money.
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Matthew Facciani @matthewfacciani.bsky.social · 03/09/2026
A new global study of 53 countries finds political polarization looks very different by country, but most research only studies the U.S. The U.S. stands out less for how polarized it is and more for how it got there.
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Matthew Facciani @matthewfacciani.bsky.social · 02/09/2026
"AI’s value needs the buildout, the buildout needs consent, and consent needs visible value" kirangarimella.substack.com/p/some-thoug...
kirangarimella.substack.com
Some thoughts on the AI data center backlash
TL;DR The data center backlash isn’t NIMBY, isn’t misinformation, and isn’t Chinese bots.
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Matthew Facciani @matthewfacciani.bsky.social · 02/09/2026
New study found that AI labels, fact-checks, and community notes generally had similar effects, but community notes worked better for some immigration misinformation. Overall, the effectiveness of these interventions depends on the context rather than one approach working universally.
tandfonline.com
No Easy Fix to Countering AI-Generated Visual Disinformation: The (in)Effectiveness of AI-Labels, Fact-Check Labels and Community Notes
As generative AI makes it easier to create synthetic visuals at scale and speed in digital information environments, AI-driven visual disinformation is becoming more common on social media. However...
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Matthew Facciani @matthewfacciani.bsky.social · 02/09/2026
New study interviewed 19 people about science content they stumble on, never searched for. Almost everyone said the algorithm put it there, and engagement lives or dies on one gut check: does this feel relevant to me? If not, it's gone in a second. 🧵
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Matthew Facciani @matthewfacciani.bsky.social · 02/09/2026
Has been accused of substantial research fraud and had a longstanding documented relationship with Jeffrey Epstein. Still works as a professor and sells plenty of books about dishonesty. Listed speaking fee: $50,000–$75,000. dukechronicle.com/article/duke...
dukechronicle.com
‘Insane data’: Duke professor Dan Ariely accused of additional research fraud
New evidence released Monday shows that Dan Ariely, professor of business administration in the Fuqua School of Business, likely tampered with or fabricated data in an influential research paper from ...
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