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Julian Matthews

@quining.bsky.social
540 followers 391 following 43 posts

Research Fellow at Queensland University of Technology cognitive science, philosophy of mind, metacognition, consciousness. (he/him) 🇦🇺➡️🇯🇵➡️🇦🇺

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Julian Matthews @quining.bsky.social · 08/10/2025
It was a pleasure publishing with CommsPsychol in the RR format. Highly recommended! 🌟
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Julian Matthews @quining.bsky.social · 30/09/2025
🚨 Out now in @commspsychol.nature.com 🚨 doi.org/10.1038/s442... Our #RegisteredReport tested whether the order of task decisions and confidence ratings bias #metacognition. Some said decisions → confidence enhances metacognition. If true, decades of findings will be affected.
A picture of our paper's abstract and title: The order of task decisions and confidence ratings has little effect on metacognition.

Task decisions and confidence ratings are fundamental measures in metacognition research, but using these reports requires collecting them in some order. Only three orders exist and are used in an ad hoc manner across studies. Evidence suggests that when task decisions precede confidence, this report order can enhance metacognition. If verified, this effect pervades studies of metacognition and will lead the synthesis of this literature to invalid conclusions. In this Registered Report, we tested the effect of report order across popular domains of metacognition and probed two factors that may underlie why order effects have been observed in past studies: report time and motor preparation. We examined these effects in a perception experiment (n = 75) and memory experiment (n = 50), controlling task accuracy and learning. Our registered analyses found little effect of report order on metacognitive efficiency, even when timing and motor preparation were experimentally controlled. Our findings suggest the order of task decisions and confidence ratings has little effect on metacognition, and need not constrain secondary analysis or experimental design.
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Mel Goodale @action-brain.bsky.social · 03/06/2025
CIFAR invites applications for senior PhD and postdocs to participate in the Neuroscience of Consciousness Winter School, held in Montebello, Canada Dec 10-12, 2025. The Winter School is hosted by members of CIFAR’s Brain, Mind, and Consciousness program. Please repost. cifar.ca/next-generat... 🧠🧪
Dog-sled going past the Le Château Montebello.Main public room in Le Château Montebello decorated for Christmas. The building is the world's largest "log cabin".Le Château Montebello is situated on the banks of the Ottawa river, separating Quebec and Ontario.Group photo the school of 2018 at the Winter school on the Neuroscience of Consciousness
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Julian Matthews @quining.bsky.social · 30/04/2025
My family and I will take part in the Memory Walk this year supporting those living with dementia and their current/former carers ♥️ We would appreciate any donations you can spare: www.memorywalk.com.au/fundraisers/...
memorywalk.com.au
Help Anna Raise Funds To Beat Dementia!
On Saturday, 24 May, I'm taking part in Redcliffe's Memory Walk & Jog to raise funds to support Australians impacted by dementia. This is a cause close to my heart and I would love your support. Pleas...
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Communications Psychology @commspsychol.nature.com · 13/03/2025
Using a confidence-accuracy dissociation paradigm, the study finds that multisensory integration follows subjective confidence instead of objective accuracy. Further modeling suggests shared computations between confidence and multisensory integration. www.nature.com/articles/s44...
nature.com
Automatic multisensory integration follows subjective confidence rather than objective performance - Communications Psychology
Using a confidence-accuracy dissociation paradigm, the study finds that multisensory integration follows subjective confidence instead of objective accuracy. Further modeling suggests shared computati...
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Julian Matthews @quining.bsky.social · 17/01/2025
Lovely/comprehensive review of metacognition and functional neurological disorder; a condition that demands a metacognitive interpretation: doi.org/10.1093/brai... The emerging picture aligns with findings in psychopathology more broadly—metacognitive performance is often equivalent to controls.
doi.org
Going ‘meta’: a systematic review of metacognition and functional neurological disorder
Sadnicka et al., overview experimental data that has examined metacognition in patients with functional neurological disorders (FND). Interestingly, most s
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That guy Maks @callmesipo.bsky.social · 03/12/2024
Having now read two dozen or so ARC Discovery Project EOIs the best advice I can give everyone preparing one is to simplify their writing a lot. You're not writing for experts, the whole College of Experts is involved, you'll have people who have no clue about your discipline assessing this
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Shawn Prest @shawnprest.bsky.social · 25/11/2024
Excited to be here with @bethfisher.bsky.social and Mengting Zhang from @monash-m3cs.bsky.social at ACNS mers.cventevents.com/event/ACNS20... @acnsau.bsky.social I'll be presenting active inference modelling work on meditative deconstruction and letting go.
mers.cventevents.com
HOME - ACNS 2024 Conference
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megan peters 🧠 @meganakpeters.bsky.social · 22/11/2024
now out in Cerebral Cortex! my newest opinion piece, "Introspective psychophysics for the study of subjective experience" #neuroskyence #neuroAI #consciousness #introspection #psychology academic.oup.com/cercor/advan...
academic.oup.com
Introspective psychophysics for the study of subjective experience
Abstract. Studying subjective experience is hard. We believe that pain is not identical to nociception, nor pleasure a computational reward signal, nor fea
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megan peters 🧠 @meganakpeters.bsky.social · 22/11/2024
finally published! Optimal metacognitive decision strategies in signal detection theory -- with the brilliant Brian Maniscalco and Lucie Charles #neuroskyence #neuroAI #metacognition #consciousness #psychology link.springer.com/article/10.3...
link.springer.com
Optimal metacognitive decision strategies in signal detection theory - Psychonomic Bulletin & Review
Signal detection theory (SDT) has long provided the field of psychology with a simple but powerful model of how observers make decisions under uncertainty. SDT can distinguish sensitivity from respons...
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Matthias Michel @matthiasmichel.bsky.social · 22/11/2024
In this new preprint @smfleming.bsky.social and I present a new theory of the functions and evolution of conscious vision. This is a big project: osf.io/preprints/ps.... We'd love to get your comments!
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Australasian Cognitive Neuroscience Society @acnsau.bsky.social · 18/11/2024
Hello world! Australasian Cognitive Neuroscience Society is on bsky! #ACNSnews
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Julian Matthews @quining.bsky.social · 18/11/2024
ABC's Philosopher's Zone is a favourite of mine from the radio station's stable. Here's the wonderful recent episode on animal+ sentience with @birchlse.bsky.social www.abc.net.au/listen/progr...
abc.net.au
Sentience - ABC listen
Sentience is a puzzle - and an increasingly important one. The question of exactly what constitutes sentience, and which organisms possess it, is hotly contested. But with scientific evidence emerging...
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Dr Emily Colton @ecoltonpsych.bsky.social · 18/11/2024
Is perceptual novelty important in your research? We created, standardised, and validated a database of truly novel perceptual stimuli (matched to BOSS objects on size, contrast, luminance & colourfulness) so you don't have to! www.nature.com/articles/s41... #cogpsy #psychology #EEG #neuroskyence
nature.com
Standardised images of novel objects created with generative adversarial networks - Scientific Data
Scientific Data - Standardised images of novel objects created with generative adversarial networks
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Patrick Cooper @neurocoops.bsky.social · 15/11/2024
Our latest work, up as a preprint to enjoy. We gave LLMs tasks adapted from experimental psychology to see how they contribute to teamwork. We found LLMs were reasonable at monitoring tasks but were poor at tasks requiring planning and strategising.
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Steve Fleming @smfleming.bsky.social · 13/11/2024
It was only a matter of time - a metacognition starter pack! Do let me know if I’ve missed people or if you’d like to be added #neuroskyence 🧪 go.bsky.app/9PSjwLF
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Francesco Poli @francescopoli.bsky.social · 13/11/2024
In our latest work on curiosity, we show how autistic traits influence free exploration! Out now in PLOSCompBiol! journals.plos.org/ploscompbiol...
journals.plos.org
Autistic traits foster effective curiosity-driven exploration
Author summary Research has long recognized that individuals display curiosity and explore their environments in order to learn. It is suggested that personal characteristics, including autistic trait...
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Timothy Brady @timbrady.bsky.social · 13/11/2024
New preprint where @mmrobinson93.bsky.social and I jump into the literature on meta-cognition (hopefully in a useful way!): osf.io/preprints/os... We show that a simple memory model (TCC) can be straightforwardly adapted to make predictions about confidence #neuroscience #psychscisky
Figure showing a key manipulation in the paper. A set of images or colors are remembered, and then the memory test pits an item you saw vs one that is similar to the tested item or another remembered item.
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Thomas Andrillon @thomasandrillon.bsky.social · 12/11/2024
I think it was missing to I created a Consciousness Science Starter Pack: go.bsky.app/T8z9NP4 I can still add ~90 people so if you want to jump in, let me know! And if you don't want to be there, let me know as well of course. The boundaries of consciousness research can be hard to determine!
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Steve Fleming @smfleming.bsky.social · 08/11/2024
Welcome Mel! Great to have you on here
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JASP @jaspstats.bsky.social · 29/10/2024
Hi Bluesky! ☀️ We are an open-source statistics program that is free, friendly, & flexible. Armed with an easy-to-use GUI, we enable both classical & Bayesian analyses. Over 340 universities in over 70 countries use JASP. Follow us to get notified on our latest features & stats news.
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Patrick Cooper @neurocoops.bsky.social · 08/10/2024
Our latest paper: "Users do not trust recommendations from a large language model more than AI-sourced snippets” www.frontiersin.org/journals/com...
frontiersin.org
Frontiers | Users do not trust recommendations from a large language model more than AI-sourced snippets
BackgroundThe ability of large language models to generate general purpose natural language represents a significant step forward in creating systems able to...
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Julian Matthews @quining.bsky.social · 04/10/2024
I don't have a substack but I do make music in my free time 🐧 It's not everyday that a synthesiser turns 40. You can check out my new EP on bandcamp: julianpalindrone.bandcamp.com/album/so-thi...
julianpalindrone.bandcamp.com
so, this is 40, by palindrone
3 track album
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Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 16/09/2024
I can't support Twitter anymore. I was going to hold out until after the election, but not with shit like this. I am shifting over to here on Bluesky. You may see some personal posts sprinkled in with my photos from here on out. Thanks for being a much nicer place to be. I love y'all. 💜
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Ben Fulcher @bendfulcher.bsky.social · 05/08/2024
New preprint by Rishi Maran, Eli Muller: "Analyzing the Brain's Dynamic Response to Targeted Stimulation using Generative Modeling" A review/perspective on why new mechanisms may be found by modeling brain stimulation dynamics 🧠⚡️ arxiv.org/abs/2407.19737
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Julian Matthews @quining.bsky.social · 02/07/2024
I will share our findings at #ASSC27 about the mental effort of #metacognition + its consequences for a famous metacognitive phenomenon… 1️⃣💦2️⃣ Catch it in Metacognition #1, Fukutake - Wed 03 July 5:30PM #PsychSciSky #neuroscience
Banner advertising "Metacognition is mentally demanding: revealing the cost and consequences of metacognitive effort". A concurrent talk at the 27th Meeting of the Association for the Scientific Study of Consciousness.
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Julian Matthews @quining.bsky.social · 20/06/2024
Bridge Road Brewing catering to a very specific Venn diagram that I absolutely exist within
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Julian Matthews @quining.bsky.social · 14/06/2024
🎉 Our #RegisteredReport on report order & #metacognition accepted-in-principle Communications Psychology! Why do we collect #confidence ratings after task decisions? As a grad student, this puzzled me. We used one order in every study, but others flipped it or collected both together 🔄
An drawing of someone considering three report orders: 1) decision then confidence, 2) decision and confidence, 3) confidence and decision.
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Julian Matthews @quining.bsky.social · 12/06/2024
AI "hallucinations": a kind of "controlled bullshit"? link.springer.com/article/10.1...
link.springer.com
ChatGPT is bullshit - Ethics and Information Technology
Recently, there has been considerable interest in large language models: machine learning systems which produce human-like text and dialogue. Applications of these systems have been plagued by persist...
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Julian Matthews @quining.bsky.social · 22/05/2024
Apart from metacognition, one of several other obsessions of mine is craft beer. Couldn't pass up an opportunity to visit Green Bench, the 'Burgs best hop & foeder technicians.
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Julian Matthews @quining.bsky.social · 17/05/2024
#VSS and #metacognition? Stop by my poster on Sunday and let's discuss the mental cost of perceptual metacognition and confidence.
A banner advertising my poster "Metacognition is mentally demanding" at the 2024 Vision Sciences Society meeting. 

I will present poster 33.310 on Sunday, May 19 from 8:30am to 12:30pm in the session "Decision making: perceptual decision making 2".
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Kelsey Perrykkad @kperrykkad.bsky.social · 09/05/2024
Our paper about the sense of self in first time pregnancy is out now in npj women's health! 🪞🤰 Check it out: rdcu.be/dHja6 #psysky #psychology #reprosky #🧠
Graphical abstract for the paper. The top panel shows findings that compared to never been pregnant peers, women pregnant for the first time show more body estrangement, more often feel out of control, more body visibility, greater attractiveness, femininity, pride, confidence and poorer learning. The bottom half of the figure depicts changes by trimester such that the first trimester is associated with a dip in sense of self, the second trimester shows consolidation so that the self is stronger in pregnant women than non pregnant peers and a relative return to baseline by the third trimester.
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hakwan lau @hakwan.bsky.social · 15/03/2024
hello friends in Japan (& elsewhere), there is a free conference on perceptual metacognition on July 1st in Tokyo. abstract submission deadline in two weeks. one downside is that i'll be speaking there. but the other speakers are gonna be great sites.google.com/view/asscmet... #neuroskyence
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Julian Matthews @quining.bsky.social · 14/03/2024
Revisions complete! This registered report has been a lot of work but an instructive process with some of the most helpful reviews I've ever received. We're not done yet but it feels like how science should work, drawing on external expertise to improve experiments at the design stage.
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Julian Matthews @quining.bsky.social · 13/02/2024
A few people have reached out for the materials to our cognitive effort decision making task published in Cognition. I try to upload and contextualise all of the code supporting my publications. Here's the one for cognitive effort: github.com/julian-matth...
github.com
GitHub - julian-matthews/cognitive-fatigue-paradigm: Experiment code for our cognitive effort decision making paradigm published in Cognition.
Experiment code for our cognitive effort decision making paradigm published in Cognition. - julian-matthews/cognitive-fatigue-paradigm
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Jorge Morales @jorgemorales.me · 19/01/2024
Vision science peeps, help needed! My grad student has been trying to replicate *very basic* Posner cueing online... to no avail. We've tried several times with Prolific subjects; quadruple-checked our code, and nothing. Valid cues at variable CTOAs are still slower than invalid cues. Any clues?!
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Audrey Mazancieux @audreymazancieux.bsky.social · 18/01/2024
Interested in the evolution of domain-general confidence from young adults to older adults? Check our new preprint led by Lucile Meunier with Céline Souchay, @smfleming.bsky.social, Christine Bastin, Chris Moulin, Lucie Angel, and myself! osf.io/preprints/os...
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Dr. Indrit Bègue @indritbegue.bsky.social · 03/12/2023
I am looking for a postdoc to work with me! www.linkedin.com/jobs/view/37... #neuroskyence #academicsky
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Patrick Cooper @neurocoops.bsky.social · 18/10/2023
Hi everyone, I’ve made the migration to bluesky. ✌️ Former academic who used to work in cognitive control, theta oscillations, curiosity and promoting inclusive colour data viz schemes. Nowadays I’m working on assessing human factors required for successful AI-human teaming. #neuroskyence
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Julian Matthews @quining.bsky.social · 30/11/2023
Inspiring symposium on AI for cognitive neuroscience organised by @neurocoops.bsky.social & Tijl Grootswagers absolutely wild to see the improvements in deepfake/generative technology for robust stimulus design #ACNS2023
"AI for Cognitive Neuroscience: Exploring new horizons" a symposium with talks by Dr Casey Becker, Dr Tijl Grootswagers, Dr Astrid Zeman, and Dr Patrick Cooper
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Julian Matthews @quining.bsky.social · 29/11/2023
Incredible presentation by @kperrykkad.bsky.social tracking how the sense of self changes during pregnancy. Drawing on philosophical and neuroscientific approaches to address a huge gap in #neuroskyence
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Patrick Cooper @neurocoops.bsky.social · 28/11/2023
Julian Matthews @quining.bsky.social suggesting a reframing of some classic metacognitive effects as motivation related! #ACNS2023
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Patrick Cooper @neurocoops.bsky.social · 26/11/2023
Looking forward to seeing old colleagues and friends again in Sydney! Also the first time I’ve chaired a symposium 🤖😊🧠 #ACNS2023
Screenshot of AI for Cognitive Neuroscience symposium
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Julian Matthews @quining.bsky.social · 22/11/2023
Concise and thoughtful piece from Tim Bayne & Iwan Williams: doi.org/10.1038/s415... It's striking that due to the closed nature of the training data used by Open AI we are unable to say whether ChatGPT/etc are simply using a look-up table approach to "passing" the Turing test.
doi.org
The Turing test is not a good benchmark for thought in LLMs - Nature Human Behaviour
Nature Human Behaviour - The Turing test is not a good benchmark for thought in LLMs
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Andrew Corcoran @corcorana.bsky.social · 16/11/2023
'Accelerating scientific progress through Bayesian adversarial collaboration' -- out now in the latest issue of Neuron. @hohwy.bsky.social, Karl Friston & I propose a formal framework for designing & evaluating adversarial tests of competing theories.
cell.com
Accelerating scientific progress through Bayesian adversarial collaboration
Corcoran et al. present a Bayesian treatment of adversarial collaboration that operationalizes competing theoretical hypotheses as generative models. This approach enables the evaluation of alternati...
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Thomas Andrillon @thomasandrillon.bsky.social · 15/11/2023
Our review on *Local Sleep* is finally out! We cover the emerging notion that sleep can be a local brain phenomenon across wakefulness and sleep. And the consequences for cognition and consciousness. Check it out! tinyurl.com/bdh64ck3
tinyurl.com
What is sleep exactly? Global and local modulations of sleep oscillations all around the clock
Wakefulness, non-rapid eye-movement (NREM) and rapid eye-movement (REM) sleep differ from each other along three dimensions: behavioral, phenomenologi…
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Julian Matthews @quining.bsky.social · 10/11/2023
Great read from @manurausch.bsky.social & Zehetleitner on the stats of metacog measures! Good summary of each for those wanting a recent ref. tl;dr most perform well. Take care w/ hierarchical priors, use both random intercepts & slopes for glmer doi.org/10.1007/s114... #neuroskyence #psychology
doi.org
Evaluating false positive rates of standard and hierarchical measures of metacognitive accuracy - Me...
A key aspect of metacognition is metacognitive accuracy, i.e., the degree to which confidence judgments differentiate between correct and incorrect trials. To quantify metacognitive accuracy, research...
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Jorge Morales @jorgemorales.me · 08/11/2023
I'm really happy to share my contribution to this year's issue of Philosophical Perspectives. My (open access) paper "Mental Strength: A Theory of Experience Intensity" proposes a framework for understanding degrees of conscious experience. A short 🧵 /1 #philsky philpapers.org/rec/MORMSA-21
philpapers.org
Jorge Morales, Mental Strength: A Theory of Experience Intensity - PhilPapers
Our pains can be more or less intense, our mental imagery can be more or less vivid, our perceptual experiences can be more or less striking. These degrees of intensity of ...
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Julian Matthews @quining.bsky.social · 27/10/2023
Interesting read from researchers documenting Brissie's early punk & goth scenes. Neither are easy subcultures to be part of in the heat of Australia's "biggest country town" and stronghold of the cultural cringe. I'd love to read one about the 90s/00s rave culture.
stories.uq.edu.au
Subcultures in the subtropics: the evolution of Brisbane's punks and goths
Researchers from The University of Queensland and QUT have traced the unique evolution of Brisbane’s punks and goths, and their role in shaping the city’s ‘alternative’ identity.
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Mateusz Wozniak @mmwozniak.bsky.social · 25/10/2023
Depersonalization affects self-prioritization of bodily, but not abstract self-related information Our new study out in Journal of Experimental Psychology Together with Anna Ciaunica , @lukemcellin.bsky.social & @hohwy.bsky.social psycnet.apa.org/doiLanding?d...
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