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Stuart Ritchie 🇺🇦 Profile
Stuart Ritchie 🇺🇦

@StuartJRitchie

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Research Comms @AnthropicAI

London
Joined August 2010
Don't wanna be here? Send us removal request.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
10 months
It's so great to see so many people subscribing to The Studies Show - my new science podcast with @TomChivers ! You can give it a listen and subscribe right here:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
-Left: when you just read the Abstract. -Right: when you read the whole paper. (via Reddit)
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
This will go down in the annals of dumb alt-right tweets as a true classic. It’s almost art.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
When you pre-register the wrong analysis.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
8 months
I tried that instant AI translation tool () and it's one of the most amazing things I've ever seen. I gave it a 35 second video of me speaking English. And this is what I got - that's my voice! But I don't speak a word of German...
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Hello from the hospital, where we’ve just had a baby(!). This is our daughter(!) Juliet. Very strange to hear myself say that. Wish us luck!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
Academic twitter: _________ Here’s my extremely rigorous study that makes an incremental contribution to science _________ 🔁12 ❤️ 15 _________ HERE'S MY SUPER-FLIMSY N=12 STUDY WITH RESULTS DIRECTLY RELEVANT TO ONE SIDE OF A CULTURE-WAR ISSUE _________ 🔁3,243 ❤️ 15.7k
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Three true things: 1) The guy’s Nazi salute joke wasn’t very funny; 2) Some extremely unpleasant people have been defending him; 3) The above two things make zero difference to the fact that *people should never be prosecuted for making a joke*, FFS.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
-Sample size: 49 -p-values: 0.045, 0.052, 0.029, 0.032 (i.e. prima facie p-hacking) -Scientific value: very little -Number of views on Twitter regardless: 3,000,000 Doesn’t this Huberman guy have any standards for the stuff he promotes to his huge audience? (via @alexabelson9 )
@hubermanlab
Andrew D. Huberman, Ph.D.
1 year
A 2 min cold immersion to the neck and five, 30 second cold showers per week led to a significant reduction in abdominal fat and waist circumference in the men in this study; also multiple psychological improvements related to stress & wellbeing.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
Did... did a bat write this?
@sciencefocus
BBC Science Focus Magazine
4 years
Bats ‘pose no greater viral threat’ to humans than other species
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
BREAKING: Biden signs Executive Order banning the use of the phrase "trending towards significant" if your p-value is 0.05 or higher.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
My conscience: Stuart, you have an enormous amount of work to do and I think it’s best if you- Me: [spends over an hour assembling this]
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@StuartJRitchie
Stuart Ritchie 🇺🇦
8 months
My hot take: this isn't real. Nobody can actually "see" stuff that doesn't exist in the way implied here unless they're actively hallucinating. This is just an issue of these things being extremely hard to explain using language, and people using words in subtly different ways.
@johngreen
🐢🐢🐢John Green🐢🐢🐢
8 months
It's baffling to me that some of y'all see stuff in your mind. You SEE it? The way your eyes see? I always thought "visualize" meant thinking of the words/ideas/feelings associated with a thing, not actual visuals. I am such a total 5 on this scale I didn't know 1-4 existed.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
It had to be done
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
"We conclude that the “nudge” literature... is characterized by severe publication bias." "...after correcting for this bias, no evidence remains that nudges are effective as tools for behaviour change."
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@StuartJRitchie
Stuart Ritchie 🇺🇦
10 months
It is really quite puzzling that John von Neumann is 100% absent in the Oppenheimer movie (not even a brief scene - he’s not in it at all), despite him playing a big role in the story it tells. Would love to find out why Nolan decided to write him out entirely.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Remember the "hungry judges" study, which has now been included in two huge bestselling books by Daniel Kahneman (among many other places)? Now we have another relevant study, and it reminds us that the original one was just too good to be true:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
I made this meme for our stats class last week and I thought you might like to see it.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
Last night I got trapped in a toilet. Here’s a thread that explains how:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
No. Genes don’t explain 35% of “your” depression; they explain 35% of variation in depression *in the population* (if that 35% number is even correct). This is the classic misunderstanding of heritability, and shows a very shaky grasp on the science. Embarrassing.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
8 months
Jeez, I don’t think I realised QUITE how bad Russell Brand’s stuff had become. Real lowest-common-denominator slop for antivaxxers and the moron wing of the US right.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 month
A little note on the scary new Scottish Hate Crime Act. I see quite a lot of people criticising the Act for not including sex as a protected characteristic. I totally get why they'd say this, and it's bizarre that sex is not on the list. BUT... even getting into that
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
When I can’t find any major problems with a paper that goes against my theory and I’m forced to give it a positive peer review:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
Well, that's it. We now have officially *the* most absurd theory of the STEM gender gap. Nothing will ever top this.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
Thread! Everyone's talking about this new study showing cash transfers "speed up brain activity" in babies (). It must be a big deal, because it was announced with a "Breaking News" tweet by no less than the New York Times:
@nytimes
The New York Times
2 years
Breaking News: Cash payments for low-income mothers increased brain function in babies, a study found, with potential implications for U.S. safety net policy.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 months
Scientific journals should not be commenting on atrocities, wars, geopolitical situations, or anything of that nature. It’s simply not their job. It draws them into a whole conversation that’s irrelevant to science. Stop doing this!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
The cat's out the bag, so here's a closer look at the UK and US covers for SCIENCE FICTIONS, my new book on fraud, bias, negligence, and hype and their effect on research. Out 16 July 2020! Details here (UK): and here (US):
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
Did... did the coronavirus write this tweet?
@WHOWPRO
World Health Organization (WHO) Western Pacific
4 years
If you do not have any respiratory symptoms, such as fever, cough, or runny nose, you do not need to wear a medical mask. When used alone, masks can give you a false feeling of protection and can even be a source of infection when not used correctly. ➡️
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@StuartJRitchie
Stuart Ritchie 🇺🇦
11 months
Lots of coverage today of the UK study that says breastfed kids are more likely to get good exam results. This is the study: I can't possibly write another article about this because you'll think I'm obsessed, so here's a Twitter thread about it instead:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
My first piece for The Atlantic! It’s on the curious contrast between videogame speedrunners (who REALLY care about fraud) and scientists (who in so many cases aren’t bothered at all):
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Cannot tell you what a bummer it is to discover that the Editor-in-Chief of Science thinks it’s not “acceptable”, and that people shouldn’t be given “permission”, to disagree with him on policy even if they accept 100% of the science.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
8 months
Always interesting to see double-standards like this. Apparently you have to be super-careful in saying that obesity is causally associated with anything… but when it comes to stigma, we definitely know it has a “well-documented” causal effect!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
I think it's really easy to make strawman arguments of both sides of the culture war. But when Scientific American publishes an article alleging E.O. Wilson (RIP) was racist because he said ants live in "colonies", is there much strawmanning possible?
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
Here’s my article on why I wish my fellow psychologists and “behavioural scientists” would just stop talking about the coronavirus:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
Sorry, but there's no way the absolutely massive IQ difference in this study is real. An average IQ of 100 for kids born before the pandemic compared to an average of 79 during it? No - sorry, just too huge an effect to be plausible.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
It's out at last! Our big (N = 5,216) paper on sex differences in the human brain is now published at Cerebral Cortex:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
Nice to get the occasional reminder that there’s no First Amendment in the UK, and sometimes the police will knock on your door and arrest you if you make a stupid joke on Twitter. A really great use of their time, and not at all scary and dystopian!
@STVNews
STV News
2 years
Man found guilty of ‘grossly offensive’ Captain Tom tweet.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Pretty much *the No.1* thing you learn NOT to do in science/statistics is to look at graphs that have similar lines and then imply that one thing must be causing the other. But now loads of very smart people are doing just this, and everyone is nodding along! What's going on!?
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
Linkage disequilibrium.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
Some friends & I have made ANTI-VIRUS, a website that debunks the COVID Sceptics! We: 1) List responses to common Sceptic arguments; 2) Document erroneous claims of prominent Sceptics. Please share far & wide. We'll update often. Hope you find it useful!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
OMG, they cured it already?!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
One of the maddest online dramas I've ever seen. People love the genre of tweet that goes "I'm the author of this article, and you've misrepresented it" so much that they failed to check if the person in question really WAS the author! Extraordinary.
@jessesingal
Jesse Singal
1 year
Dr. E. Kale Edmiston said I misinterpreted a sentence in the WPATH SoC he himself wrote. I reached out to Scott Leibowitz, co-chair of the chapter in question: "I have never heard of that person in my life... and that sentence was certainly not written by them whatsoever. " 🤷
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Is there really "overwhelming" evidence that smartphones and social media are having a "catastrophic" effect on kids' mental health? I don't think so! Here's my long article where I read though the relevant studies and note some serious weaknesses:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Went to Japan; got married (just in time for baby arriving in January!).
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
Every so often I remember that this happened in March and it freaks my nut anew.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
"Although academic freedom is fundamental, it is not unbounded"- this should send a shiver down the spine. Sure it's well-meaning, but vague wording throughout is open to abuse & could be used to shut down research anyone finds offensive for any reason.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
Nothing beats the moment of revelation when you suddenly realize why they're called "joyplots".
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Stuart Ritchie 🇺🇦
6 years
Really beautiful preprint on which traits people think are genetic and which they think are environmental. Women with multiple kids turn out to be best at guessing the heritability of traits!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
Occurs to me that emphasising “leave 2m space” and not “it’s airborne” might cause people to follow the very specific letter, but not the spirit, of the rules - and make them totally misunderstand what the threat actually is:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
What should we call the law that states that “people making silly arguments against the idea of ‘intelligence’ will always manage, just incidentally, to tell us they’re at a top university, or that they score really high on IQ tests”?
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
How many anti-semaglutide articles has the Guardian published now? More than a dozen I think, attacking it from every spurious angle possible. It’s always weird to be reminded that your reasoning (to me it seems obviously a positive thing) is wildly different from someone else’s:
@guardianopinion
Guardian Opinion
1 year
A 'skinny jab' is no quick fix for obesity - and no excuse to let junk food companies off the hook | Sarah Boseley
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Here’s another “leaving academia” tweet: I’m leaving academia! As of January I’ll be Science Writer at @theipaper - extremely excited to make science writing my actual job rather than a hobby!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
Here's my summary of the University of Manchester masturbation research scandal, and some of the (incredibly depressing) academic reaction to it:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
...IN ZEBRAFISH
@SkyNews
Sky News
1 year
Intermittent fasting could cause fertility problems, study suggests
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
Amazing news from science: being optimistic “helps you believe correlation is causation”, study says
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
Long thread -> This is a great BBC Newsnight interview with Prof. Graham Medley about the modelling of the coronavirus spread and herd immunity. I reckon the "act as if you have the virus" advice is genius and should be widely shared:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
"Heritable" 👏 doesn't 👏 mean 👏 "immutable" 👏 (I genuinely think a big chunk of the angst about genetic studies would evaporate if people understood that)
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Me before I joined Twitter // Me now
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
As of today, a major overhaul of UK government and NHS comms to emphasize being outdoors, ventilation, avoiding crowds - stuff that actually works. "Hands/Face/Space" gone completely, and handwashing relegated to the bottom of the list. Delightful to see!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Twitter is funny, because people just make up any old nonsense and send it out to thousands of followers, despite the fact it’s directly contrary to reality.
@existentialcoms
Existential Comics (find me on bluesky)
6 years
IQ tests are funny, because they test the small edge cases of what our brains are extremely bad at, so you get massive variations in "intelligence", based largely on pointless puzzles that evolution never made us good at precisely because they are pointless.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Out today - HUGE, definitive, double meta-analysis of growth mindset! Main results: 1) Correlation of growth mindset with achievement is tiny, r = .1; 2) Effect of growth mindset interventions on achievement is tiny, d = .08. By @BrookeMacnamara
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Thread -> In publicity for his new book on depression, Johann Hari has repeatedly made the following claim: "between 65 and 80% of people on antidepressants are depressed again within a year". He says it in this extract:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
OMG
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
One of the most exciting sentences I've ever tweeted: @ZachWeiner has made a comic version of my book on science's problems - and I'm in it!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
The year is 2050. There are now more "Introduction to Bayesian Statistics" papers published per year than all other academic papers put together. But everyone still uses p-values.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
Has anyone done this one yet?
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Of course he's also into psychedelics for mental illness, transgenerational epigenetic inheritance, "self-directed neuroplasticity", and... making your eyesight better by looking at a pen(?!). Just a river of complete crap/fringe science, pushed out to a million followers.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
“Reflexively defend all humanities papers when they’re criticised” is a really bad heuristic that leads you to some terrible places!
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Stuart Ritchie 🇺🇦
10 months
Was it because von Neumann was a hardcore nuclear hawk and advocated for a first strike to wipe the USSR off the map before it could develop its own nukes? Surely that would create loads of interesting conflict and tension in the movie, though!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
3 years
One year ago today.
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Stuart Ritchie 🇺🇦
6 years
I WANT TO BELIEVE (in a causal effect when all I've got is a purely correlational study)
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Stuart Ritchie 🇺🇦
7 years
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
"Each £ raised for charity [by parachuting] cost the NHS £13.75 in return"
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 month
I've not yet read the Anxious Generation book, and I didn't think the review in Nature was very convincing at all. But just one thing: Can we please stop doing vote-counting of studies? I mean this kind of thing, from Haidt's tweet below: -"22 experimental studies (16 of which
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
Beloved gorilla Koko, famous for learning American Sign Language, passed away at 46. This is her last message to humanity... Thank you to everyone who has retweeted this amazing message...
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
1) Our new genome-wide association study for IQ () included the peripheral result that some genes linked to higher IQ are also linked to higher likelihood of poor eyesight. Here's how the media bollocksed up the coverage of it in almost every way:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
2 years
Johann Hari has written another book, about how people’s attention spans are getting shorter. It’s not very good. I reviewed it, and Hari’s work more generally, here for @unherd :
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
Here's my article on the ridiculous UK laws on baby formula - we restrict it and shame mothers for using it for no good scientific reason:
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Stuart Ritchie 🇺🇦
3 years
One of the studies that failed to replicate in this excellent new replication audit (“Poverty Impedes Cognitive Function”, published in Science in 2013) has itself been cited 2,295 times. No big deal I’m sure!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Left: Howard Gardner (Harvard) on Multiple Intelligences. Right: Claude Steele (Berkeley) on Stereotype Threat. #science
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
Our new preprint is out! The biggest ever single study (N = 5,216) of sex differences in the human brain:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
6 years
Our meta-analysis ( @tuckerdrob and me) is now published in Psychological Science! How much does education raise intelligence? Answer: somewhere between 1 & 5 IQ points for one added year. Lots of discussion of what this means in the paper:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
11 months
"That’s right: Two different people independently faked data for two different studies in a paper about dishonesty." The start of what promises to be an eye-popping investigation into data fraud in studies by a big-deal Harvard Business School professor:
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
I ran a Principal Conponents Analysis the other day and I’m delighted to announce that I’m now a quantum physicist.
@WIRED
WIRED
5 years
Stitch Fix is using something called eigenvector decomposition, a concept from quantum mechanics, to tease apart the overlapping “notes” in an individual’s style. Using physics, the team can better understand the complexities of the clients’ style minds.
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Stuart Ritchie 🇺🇦
3 years
There's a far more plausible explanation for the results in the Discussion section of the paper:
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Stuart Ritchie 🇺🇦
6 years
Oh bloody hell, I’m *30* today.
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Stuart Ritchie 🇺🇦
2 years
The whole episode--PhDs defend a paedophile-adjacent paper then row back--illustrates a sad truth: People on social media--perhaps most of all those who rely heavily on their credentials!--don't actually *read* the things they criticise, or defend. They just go by pure vibe.
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Stuart Ritchie 🇺🇦
11 months
This is genuinely the kind of logic you hear in the debate over weight-loss drugs. I don’t get it at all!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
Oh hello, well-powered analyses with null results published in a major psychiatry journal! This is progress, right here:
@APAPubJournals
Journals of The American Psychiatric Association
5 years
In a study of more than 5,000 subjects, no significant differences of #brain structural asymmetry were found between individuals with major #depression and control subjects, for any cerebral cortical or subcortical asymmetry measure.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 months
Hello from San Francisco! TREMENDOUSLY excited to be starting my new job today - I’m joining the Comms team at @AnthropicAI ! It doesn’t get much cooler than that. Wish me luck…!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
10 months
You almost have to respect the level of bullshit on display here if they managed to convince the Mayor of London to do a massive ad campaign based on *that* reasoning and *those* references…
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@StuartJRitchie
Stuart Ritchie 🇺🇦
8 months
Marianna Spring talks a lot about trolls (who I don’t doubt are really bad/abusive!), but didn’t respond at all to mainstream articles (incl mine) months ago showing she’d spread 100% false info about UK conspiracy belief to a huge audience. Oh well!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
1 year
The whole thing about “Ultra-Processed Food isn’t really food” has become a real meme, despite its obvious stupidity and snobbishness. It’s like when people say “well, rap music isn’t really music”. So dumb!
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@StuartJRitchie
Stuart Ritchie 🇺🇦
4 years
Amazing article about the failure of the amyloid hypothesis of Alzheimer’s Disease, and the groupthink that apparently shut down new ideas. What do my Alzheimer’s-research pals think of this?
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@StuartJRitchie
Stuart Ritchie 🇺🇦
5 years
I finished the first draft of my book!! Now, could everyone please STOP doing any meta-scientific studies, uncovering scientific frauds, or criticising shoddy research for the next 9 months or so, so the book doesn't end up being out of date when it's published? Thank you.
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@StuartJRitchie
Stuart Ritchie 🇺🇦
7 years
Our new preprint! Does education raise IQ? And if so, by how much? A meta-analysis: (with @tuckerdrob )
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