Riccardo Fusaroli
@fusaroli.bsky.social
Cognitive Science at Aarhus Uni. Curious about social interactions, symbolic behaviors, and meta-science. Focus on stats, computational modeling, machine learning, complex systems, language, exp semiotics and neuropsychiatric conditions. He/They.
Pinned
Hello new followers! I am a curious cognitive scientist, with a background in semiotics, a strong focus on quantitative and computational methods and meta-science and scattered interests in how we think, learn and function through conversations.
For a taste of my work, a thread of threads: 1/
For a taste of my work, a thread of threads: 1/
love it when I'm teaching in class (at 8am😱), and the uni calls for cancelling in-person teaching due to snow, and the students look out to the winter wonderland and still decide to keep having the class :-)
February 6, 2026 at 7:41 AM
love it when I'm teaching in class (at 8am😱), and the uni calls for cancelling in-person teaching due to snow, and the students look out to the winter wonderland and still decide to keep having the class :-)
Now the first lecture is live, but since I was so excited I forgot to share the screen on the recording for the first half of the class 🤦♂️:
- Video: youtu.be/YLEhNc5sOFE
- Slides: www.dropbox.com/scl/fi/okiys...
- Video: youtu.be/YLEhNc5sOFE
- Slides: www.dropbox.com/scl/fi/okiys...
February 5, 2026 at 1:59 PM
Now the first lecture is live, but since I was so excited I forgot to share the screen on the recording for the first half of the class 🤦♂️:
- Video: youtu.be/YLEhNc5sOFE
- Slides: www.dropbox.com/scl/fi/okiys...
- Video: youtu.be/YLEhNc5sOFE
- Slides: www.dropbox.com/scl/fi/okiys...
I also want to hear about your favorite recent (<5 years 😅) Stan and Stan-adjacent developments that changed your bayesian framework (thinking about models, validating models, fitting models and checking their fit and how they break)!
as I'm revising my course materials, I keep stumbling upon cool @mc-stan.org developments.
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
February 4, 2026 at 1:35 PM
I also want to hear about your favorite recent (<5 years 😅) Stan and Stan-adjacent developments that changed your bayesian framework (thinking about models, validating models, fitting models and checking their fit and how they break)!
as I'm revising my course materials, I keep stumbling upon cool @mc-stan.org developments.
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
February 4, 2026 at 1:30 PM
as I'm revising my course materials, I keep stumbling upon cool @mc-stan.org developments.
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
Current favorites:
1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective!
1/
Reposted by Riccardo Fusaroli
The handaxe enigma continues!
Brand-new method shows: one can shape a handaxe without cultural models. Paper open access: www.sciencedirect.com/science/article/pii/S0305440326000154
Brand-new method shows: one can shape a handaxe without cultural models. Paper open access: www.sciencedirect.com/science/article/pii/S0305440326000154
February 4, 2026 at 11:26 AM
The handaxe enigma continues!
Brand-new method shows: one can shape a handaxe without cultural models. Paper open access: www.sciencedirect.com/science/article/pii/S0305440326000154
Brand-new method shows: one can shape a handaxe without cultural models. Paper open access: www.sciencedirect.com/science/article/pii/S0305440326000154
Reposted by Riccardo Fusaroli
New preprint! So, what's a multiverse analysis good for anyway?>
With @jessicahullman.bsky.social and @statmodeling.bsky.social
juliarohrer.com/wp-content/u...
With @jessicahullman.bsky.social and @statmodeling.bsky.social
juliarohrer.com/wp-content/u...
February 4, 2026 at 10:24 AM
New preprint! So, what's a multiverse analysis good for anyway?>
With @jessicahullman.bsky.social and @statmodeling.bsky.social
juliarohrer.com/wp-content/u...
With @jessicahullman.bsky.social and @statmodeling.bsky.social
juliarohrer.com/wp-content/u...
wanna learn about cognitive modeling and love pizza? I am revising my cognitive modeling course notes and could use some feedback (or you might just enjoy learning about cog modeling in R and Stan): fusaroli.github.io/AdvancedCogn...
(only chapter 1-3 are in place, the others will come)
(only chapter 1-3 are in place, the others will come)
Chapter 2 The Pizza Experiment | Advanced Cognitive Modeling Notes
My notes for the advanced cognitive modeling course - 2026
fusaroli.github.io
January 30, 2026 at 9:08 AM
wanna learn about cognitive modeling and love pizza? I am revising my cognitive modeling course notes and could use some feedback (or you might just enjoy learning about cog modeling in R and Stan): fusaroli.github.io/AdvancedCogn...
(only chapter 1-3 are in place, the others will come)
(only chapter 1-3 are in place, the others will come)
Reposted by Riccardo Fusaroli
📣 Our introduction to structural causal models in science studies is now published:
doi.org/10.1162/QSS....
@tklebel.bsky.social and I tried to make our introduction as accessible as possible. We illustrate the theory by three case studies based on a simulated model of Open Science. 🧵(1/6)
doi.org/10.1162/QSS....
@tklebel.bsky.social and I tried to make our introduction as accessible as possible. We illustrate the theory by three case studies based on a simulated model of Open Science. 🧵(1/6)
January 27, 2026 at 10:24 AM
📣 Our introduction to structural causal models in science studies is now published:
doi.org/10.1162/QSS....
@tklebel.bsky.social and I tried to make our introduction as accessible as possible. We illustrate the theory by three case studies based on a simulated model of Open Science. 🧵(1/6)
doi.org/10.1162/QSS....
@tklebel.bsky.social and I tried to make our introduction as accessible as possible. We illustrate the theory by three case studies based on a simulated model of Open Science. 🧵(1/6)
Reposted by Riccardo Fusaroli
"The relationship between childhood exploration and population-level innovation in cultural evolution" with @ndersen.bsky.social @sheinalew.bsky.social @felixthehauskat.bsky.social out in Proc B
royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org/rspb/article...
The relationship between childhood exploration and population-level innovation in cultural evolution
Abstract. The societal effects of children’s learning in cultural evolution have been underexplored. Here, we investigate using agent-based models how a pr
royalsocietypublishing.org
January 22, 2026 at 1:01 PM
"The relationship between childhood exploration and population-level innovation in cultural evolution" with @ndersen.bsky.social @sheinalew.bsky.social @felixthehauskat.bsky.social out in Proc B
royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org/rspb/article...
Last night I was reading an otherwise amusing comic book w the kids. But seriously! Who makes up Japanese this way? It took me a while to persuade the kids that I’m not a fake, this is fake Japanese 😅
January 22, 2026 at 2:43 PM
Last night I was reading an otherwise amusing comic book w the kids. But seriously! Who makes up Japanese this way? It took me a while to persuade the kids that I’m not a fake, this is fake Japanese 😅
Reposted by Riccardo Fusaroli
I'm very excited about this paper with @yngwienielsen.bsky.social just out in @nathumbehav.nature.com in which we provide evidence for the mental representation of non-hierarchical linguistic structure in language use.
🧵 1/4
Read the paper here: rdcu.be/eZ26u
🧵 1/4
Read the paper here: rdcu.be/eZ26u
Evidence for the representation of non-hierarchical structures in language
Nature Human Behaviour - Language is often thought to be represented through hierarchically structured units. Nielsen and Christiansen find that non-hierarchical structures are present across...
rdcu.be
January 21, 2026 at 10:07 PM
I'm very excited about this paper with @yngwienielsen.bsky.social just out in @nathumbehav.nature.com in which we provide evidence for the mental representation of non-hierarchical linguistic structure in language use.
🧵 1/4
Read the paper here: rdcu.be/eZ26u
🧵 1/4
Read the paper here: rdcu.be/eZ26u
Reposted by Riccardo Fusaroli
Our new review of beluga sociality and culture just dropped at Behavioral Ecology and Sociobiology! Some of our key conclusions summarized 🧵
doi.org/10.1007/s002...
@marine-valeria.bsky.social @dmennill.bsky.social @raincoast.org
doi.org/10.1007/s002...
@marine-valeria.bsky.social @dmennill.bsky.social @raincoast.org
January 21, 2026 at 8:05 PM
Our new review of beluga sociality and culture just dropped at Behavioral Ecology and Sociobiology! Some of our key conclusions summarized 🧵
doi.org/10.1007/s002...
@marine-valeria.bsky.social @dmennill.bsky.social @raincoast.org
doi.org/10.1007/s002...
@marine-valeria.bsky.social @dmennill.bsky.social @raincoast.org
There is an absolute banger of a case study on modeling a linguistic experiment on Michael's patreon, thinking carefully through the whole data generating process and I am so looking forward to the video run through. Absolutely worth supporting him (do that and we'll get more :-))!
Just posted a new, long case study as well as a swag give away over on patreon dot com, www.patreon.com/c/betanalpha, in case you've been thinking about supporting.
Get more from Michael Betancourt on Patreon
writing about modeling building and statistical inference.
www.patreon.com
January 17, 2026 at 9:02 AM
There is an absolute banger of a case study on modeling a linguistic experiment on Michael's patreon, thinking carefully through the whole data generating process and I am so looking forward to the video run through. Absolutely worth supporting him (do that and we'll get more :-))!
Family down w the flu. Irascible kids trying to defy my directive to find something to watch together, one wants a cooking show, the other monsters. The Japanese:hold my beer! The day is saved. W not too bad discussions of ecology (of dungeon ecosystems)
January 17, 2026 at 7:37 AM
Family down w the flu. Irascible kids trying to defy my directive to find something to watch together, one wants a cooking show, the other monsters. The Japanese:hold my beer! The day is saved. W not too bad discussions of ecology (of dungeon ecosystems)
Reposted by Riccardo Fusaroli
The trick here is basically to run screaming away from dichotomizing findings and into the warm and loving embrace of the vast language we have for describing uncertainty and scale, interpreting whether it matters accordingly. Use figures that make it clear.
January 16, 2026 at 8:40 PM
The trick here is basically to run screaming away from dichotomizing findings and into the warm and loving embrace of the vast language we have for describing uncertainty and scale, interpreting whether it matters accordingly. Use figures that make it clear.
Reposted by Riccardo Fusaroli
Maybe the effect is small and straddles zero? That's cool too, don't sweat it. "Treatment had a small, but likely positive effect on outcome (Beta=.1, 94% C.R. [-.05, 0.25].)
Dead-centered on zero? "We found no clear effect..."
Dead-centered on zero? "We found no clear effect..."
January 16, 2026 at 8:31 PM
Maybe the effect is small and straddles zero? That's cool too, don't sweat it. "Treatment had a small, but likely positive effect on outcome (Beta=.1, 94% C.R. [-.05, 0.25].)
Dead-centered on zero? "We found no clear effect..."
Dead-centered on zero? "We found no clear effect..."
Reposted by Riccardo Fusaroli
You’ve build a probabilistic model and, for a small data set, computed posterior inferences with Hamiltonian Monte Carlo. Everything works great and, flush with confidence, you throw the model against all of your data only for everything to go to hell....
January 8, 2026 at 5:16 AM
You’ve build a probabilistic model and, for a small data set, computed posterior inferences with Hamiltonian Monte Carlo. Everything works great and, flush with confidence, you throw the model against all of your data only for everything to go to hell....
Reposted by Riccardo Fusaroli
Advance your research and expand your network at SFI's 2026 CSSS program with lectures, application-focused seminars, and team projects. Participants gain experience in transdisciplinary collaboration and explore real-world questions through complexity science.
Apply by Feb 4, 2026
santafe.edu/csss
Apply by Feb 4, 2026
santafe.edu/csss
January 14, 2026 at 8:21 PM
Advance your research and expand your network at SFI's 2026 CSSS program with lectures, application-focused seminars, and team projects. Participants gain experience in transdisciplinary collaboration and explore real-world questions through complexity science.
Apply by Feb 4, 2026
santafe.edu/csss
Apply by Feb 4, 2026
santafe.edu/csss
Reposted by Riccardo Fusaroli
📽️ “Claims about scientific rigour require rigour” / with Berna Devezer @devezer.bsky.social
youtu.be/qNJ8xqaObR8?...
The event was organised by ReproducibiliTea UniBasel
youtu.be/qNJ8xqaObR8?...
The event was organised by ReproducibiliTea UniBasel
Open Science Basel Year 6 #5 - Berna Devezer
YouTube video by BAMM
youtu.be
January 13, 2026 at 9:23 AM
📽️ “Claims about scientific rigour require rigour” / with Berna Devezer @devezer.bsky.social
youtu.be/qNJ8xqaObR8?...
The event was organised by ReproducibiliTea UniBasel
youtu.be/qNJ8xqaObR8?...
The event was organised by ReproducibiliTea UniBasel
Reposted by Riccardo Fusaroli
Our machine learning competition on forecasting depression is online! We'd love for as many people as possible to participate. Please share in your respective networks — thank you :).
www.staff.universiteitleiden.nl/announcement...
www.staff.universiteitleiden.nl/announcement...
Machine-learning competition on forecasting depression in young adults - Leiden University
After nearly 5 years of work, the research team led by Eiko Fried has finished data collection in the ERC-funded WARN-D project on building a personalised early warning system for depression. But just...
www.staff.universiteitleiden.nl
January 12, 2026 at 12:52 PM
Our machine learning competition on forecasting depression is online! We'd love for as many people as possible to participate. Please share in your respective networks — thank you :).
www.staff.universiteitleiden.nl/announcement...
www.staff.universiteitleiden.nl/announcement...
Reposted by Riccardo Fusaroli
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data.
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
WARN-D machine learning competition is live » Eiko Fried
If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...
eiko-fried.com
January 7, 2026 at 7:39 PM
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data.
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
Reposted by Riccardo Fusaroli
Computational Social Scientists in the Nordics, unite!
🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸
The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives.
Join for free: nosocss.org/join.html.
🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸
The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives.
Join for free: nosocss.org/join.html.
January 5, 2026 at 7:57 AM
Computational Social Scientists in the Nordics, unite!
🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸
The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives.
Join for free: nosocss.org/join.html.
🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸
The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives.
Join for free: nosocss.org/join.html.
may you have the joy of iSeek in identifying lice. I for sure was not that thrilled 😅
January 4, 2026 at 8:30 PM
may you have the joy of iSeek in identifying lice. I for sure was not that thrilled 😅
Reposted by Riccardo Fusaroli
If you've missed this piece about the different modes of empiricism in computer science versus the social sciences, I can highly recommend it. doomscrollingbabel.manoel.xyz/p/the-empiri...
The Empiricism Gap in Computer Science
So far, I have argued that there is a dissonance between, on the one hand, CS’s founding myths, curricula, and self-image, and, on the other hand, the modern production of knowledge in computer scienc...
doomscrollingbabel.manoel.xyz
January 4, 2026 at 1:28 PM
If you've missed this piece about the different modes of empiricism in computer science versus the social sciences, I can highly recommend it. doomscrollingbabel.manoel.xyz/p/the-empiri...
it always takes a while to adjust to the faroese rhythms and weather. and yet it's always hard to leave
January 2, 2026 at 8:48 AM
it always takes a while to adjust to the faroese rhythms and weather. and yet it's always hard to leave