Sebastian Hellmann
@sehellmann.bsky.social
PostDoc working at TU Munich.
Interested in on computational modelling, decision-making, and confidence.
Cat owner, Ireland lover and brass music fan
Interested in on computational modelling, decision-making, and confidence.
Cat owner, Ireland lover and brass music fan
Reposted by Sebastian Hellmann
New article in Cognitive Psychology with @thorstenpachur.bsky.social and Veronika Zilker: “How sampling strategies shape experience-based risky choice.”
We present a computational framework for information search and choice in decisions from experience. 1/4
doi.org/10.1016/j.co...
We present a computational framework for information search and choice in decisions from experience. 1/4
doi.org/10.1016/j.co...
December 17, 2025 at 10:32 AM
New article in Cognitive Psychology with @thorstenpachur.bsky.social and Veronika Zilker: “How sampling strategies shape experience-based risky choice.”
We present a computational framework for information search and choice in decisions from experience. 1/4
doi.org/10.1016/j.co...
We present a computational framework for information search and choice in decisions from experience. 1/4
doi.org/10.1016/j.co...
Reposted by Sebastian Hellmann
Computer scientists: "So with machine learning we can extract subtle patterns from massive datasets. What shall we do with it?"
Business school professors, every single time: "You know, I think phrenology got a raw deal in the late 1800s."
Business school professors, every single time: "You know, I think phrenology got a raw deal in the late 1800s."
Can Your Face Predict Your Salary? Using AI Personality Assessments in Hiring
A new study from Wharton faculty explores how AI can extract personality traits from facial images — and what that means for your career.
knowledge.wharton.upenn.edu
December 11, 2025 at 7:36 PM
Computer scientists: "So with machine learning we can extract subtle patterns from massive datasets. What shall we do with it?"
Business school professors, every single time: "You know, I think phrenology got a raw deal in the late 1800s."
Business school professors, every single time: "You know, I think phrenology got a raw deal in the late 1800s."
Reposted by Sebastian Hellmann
Well this is exciting!
The Department of Psychological & Brain Sciences at Johns Hopkins University (@jhu.edu) invites applications for a full-time tenured or tenure-track faculty member in Cognitive Psychology, in any area and at any rank!
Application + more info: apply.interfolio.com/178146
The Department of Psychological & Brain Sciences at Johns Hopkins University (@jhu.edu) invites applications for a full-time tenured or tenure-track faculty member in Cognitive Psychology, in any area and at any rank!
Application + more info: apply.interfolio.com/178146
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
December 2, 2025 at 3:18 AM
Well this is exciting!
The Department of Psychological & Brain Sciences at Johns Hopkins University (@jhu.edu) invites applications for a full-time tenured or tenure-track faculty member in Cognitive Psychology, in any area and at any rank!
Application + more info: apply.interfolio.com/178146
The Department of Psychological & Brain Sciences at Johns Hopkins University (@jhu.edu) invites applications for a full-time tenured or tenure-track faculty member in Cognitive Psychology, in any area and at any rank!
Application + more info: apply.interfolio.com/178146
Reposted by Sebastian Hellmann
Grüne vollziehen Kehrtwende bei der Homöopathie: Am ersten Tag des Grünen-Parteitags in Hannover wird es lebhaft: Ein Antrag wird angenommen, der die Finanzierung homöopathischer Leistungen durch gesetzliche Krankenkassen untersagen will. Eine historische Kehrtwende.
Grüne vollziehen Kehrtwende bei der Homöopathie
Am ersten Tag des Grünen-Parteitags in Hannover wird es lebhaft: Ein Antrag wird angenommen, der die Finanzierung homöopathischer Leistungen durch gesetzliche Krankenkassen untersagen will. Eine historische Kehrtwende.
www.spiegel.de
November 28, 2025 at 10:32 PM
Grüne vollziehen Kehrtwende bei der Homöopathie: Am ersten Tag des Grünen-Parteitags in Hannover wird es lebhaft: Ein Antrag wird angenommen, der die Finanzierung homöopathischer Leistungen durch gesetzliche Krankenkassen untersagen will. Eine historische Kehrtwende.
Reposted by Sebastian Hellmann
Reposted by Sebastian Hellmann
November 12, 2025 at 12:32 AM
Reposted by Sebastian Hellmann
📢 The #TeaP2026 talk & poster submission deadline is approaching fast! ⏰ Don’t miss your chance – submit your contribution by November 16: coms.app/teap26/ 👍🏼
November 12, 2025 at 8:48 AM
📢 The #TeaP2026 talk & poster submission deadline is approaching fast! ⏰ Don’t miss your chance – submit your contribution by November 16: coms.app/teap26/ 👍🏼
Reposted by Sebastian Hellmann
Wir starten mit der ersten Seite der Doktorarbeit von Paul Langerhans, dem Entdecker der pankreatischen Inseln. Lief wohl alles nicht so rund und ich mag diesen Satz sehr: "Der einzige Zweck dieser Entstehungsgeschichte meiner Arbeit ist Motivierung und Entschuldigung ihres geringen Gehaltes."
November 11, 2025 at 7:29 AM
Wir starten mit der ersten Seite der Doktorarbeit von Paul Langerhans, dem Entdecker der pankreatischen Inseln. Lief wohl alles nicht so rund und ich mag diesen Satz sehr: "Der einzige Zweck dieser Entstehungsgeschichte meiner Arbeit ist Motivierung und Entschuldigung ihres geringen Gehaltes."
Reposted by Sebastian Hellmann
"You can’t reboot the planet if you crash it" | My commentary on Bill Gates' flawed new climate missive for @thebulletin.org: thebulletin.org/2025/10/you-...
You can’t reboot the planet if you crash it
What Gates is putting forward aren’t legitimate arguments that can be made in good faith. They are shopworn fossil fuel industry talking points.
thebulletin.org
October 31, 2025 at 6:35 PM
"You can’t reboot the planet if you crash it" | My commentary on Bill Gates' flawed new climate missive for @thebulletin.org: thebulletin.org/2025/10/you-...
Reposted by Sebastian Hellmann
Another good reason to kill this whole industry now. It’s going to fail anyway, we may as well do so while we still have a chance to restore the planet.
The intractability proof (a.k.a. Ingenia theorem) implies that any attempts to scale up AI-by-Learning to situations of real-world, human-level complexity will consume an astronomical amount of resources (see Box 1 for an explanation). 13/n
December 28, 2024 at 10:39 PM
Another good reason to kill this whole industry now. It’s going to fail anyway, we may as well do so while we still have a chance to restore the planet.
Reposted by Sebastian Hellmann
Kurzgesagt - in a nutshell explains perfectly why AI in such Context is really problematic.
Also John Oliver from Last week tonight did a really good video about AI Slop and how many think it's real.
Also John Oliver from Last week tonight did a really good video about AI Slop and how many think it's real.
AI Slop Is Destroying The Internet
YouTube video by Kurzgesagt – In a Nutshell
youtu.be
October 27, 2025 at 8:49 PM
Kurzgesagt - in a nutshell explains perfectly why AI in such Context is really problematic.
Also John Oliver from Last week tonight did a really good video about AI Slop and how many think it's real.
Also John Oliver from Last week tonight did a really good video about AI Slop and how many think it's real.
Reposted by Sebastian Hellmann
For your enjoyment (by @jagarikin)
October 25, 2025 at 11:58 AM
For your enjoyment (by @jagarikin)
Reposted by Sebastian Hellmann
Our new paper is out as a reviewed preprint in @elife.bsky.social!
elifesciences.org/reviewed-pre...
Congrats to @hashimsat.bsky.social and our amazing collaborators on this great team effort.
Special shout-out to @haukeren.bsky.social, who made this possible through his generous support 🙌
elifesciences.org/reviewed-pre...
Congrats to @hashimsat.bsky.social and our amazing collaborators on this great team effort.
Special shout-out to @haukeren.bsky.social, who made this possible through his generous support 🙌
October 21, 2025 at 6:41 AM
Our new paper is out as a reviewed preprint in @elife.bsky.social!
elifesciences.org/reviewed-pre...
Congrats to @hashimsat.bsky.social and our amazing collaborators on this great team effort.
Special shout-out to @haukeren.bsky.social, who made this possible through his generous support 🙌
elifesciences.org/reviewed-pre...
Congrats to @hashimsat.bsky.social and our amazing collaborators on this great team effort.
Special shout-out to @haukeren.bsky.social, who made this possible through his generous support 🙌
Reposted by Sebastian Hellmann
Award-winning pain researcher here. This is not something that can be done. Hope this helps.
“In nursing homes, neonatal units, and ICU wards, researchers are racing to turn pain—medicine’s most subjective vital sign—into something a camera or sensor can score as reliably as blood pressure.”
AI is changing how we quantify pain
Artificial intelligence is helping health-care providers better assess their patients’ discomfort.
www.technologyreview.com
October 15, 2025 at 2:02 PM
Award-winning pain researcher here. This is not something that can be done. Hope this helps.
Reposted by Sebastian Hellmann
Glad to see my first-year project is out!
In two experiments, we manipulated multiple stimulus features in a perception task, yet their effects on confidence and accuracy fell into just two distinct behavioral patterns, offering a way to predict the effects of novel stimulus manipulations.
1/n
In two experiments, we manipulated multiple stimulus features in a perception task, yet their effects on confidence and accuracy fell into just two distinct behavioral patterns, offering a way to predict the effects of novel stimulus manipulations.
1/n
Similarities and differences in the effects of different stimulus manipulations on accuracy and confidence
Visual stimuli can vary in multiple dimensions that affect accuracy and confidence in a perceptual decision-making task. However, previous studies hav…
www.sciencedirect.com
October 12, 2025 at 4:10 PM
Glad to see my first-year project is out!
In two experiments, we manipulated multiple stimulus features in a perception task, yet their effects on confidence and accuracy fell into just two distinct behavioral patterns, offering a way to predict the effects of novel stimulus manipulations.
1/n
In two experiments, we manipulated multiple stimulus features in a perception task, yet their effects on confidence and accuracy fell into just two distinct behavioral patterns, offering a way to predict the effects of novel stimulus manipulations.
1/n
Reposted by Sebastian Hellmann
⭐PhD in Cognitive/Computational Psychology⭐, Please Share!! Use Reinforcement Learning and Computational Modelling to study how dis/misinformation affects us (with myself +Tali Sharot). Full funding for those eligible for UK home fees. Deadline 10th Nov. @queenmarycbb.bsky.social
Characterising Cognitive Biases Elicited by Misinformation Using Reinforcement Learning at Queen Mary University of London on FindAPhD.com
PhD Project - Characterising Cognitive Biases Elicited by Misinformation Using Reinforcement Learning at Queen Mary University of London, listed on FindAPhD.com
www.findaphd.com
October 8, 2025 at 11:50 AM
⭐PhD in Cognitive/Computational Psychology⭐, Please Share!! Use Reinforcement Learning and Computational Modelling to study how dis/misinformation affects us (with myself +Tali Sharot). Full funding for those eligible for UK home fees. Deadline 10th Nov. @queenmarycbb.bsky.social
Reposted by Sebastian Hellmann
If you’re in #Munich 🥨 and curious about decision-making, perception, and cognition through a translational lens, join us for a seminar I’m hosting on Oct 30 with three fantastic speakers: @jkesby.bsky.social (visiting from 🇦🇺), @miguelbengala.bsky.social, and @jacob-lab.bsky.social 🧠💡
September 28, 2025 at 7:24 PM
If you’re in #Munich 🥨 and curious about decision-making, perception, and cognition through a translational lens, join us for a seminar I’m hosting on Oct 30 with three fantastic speakers: @jkesby.bsky.social (visiting from 🇦🇺), @miguelbengala.bsky.social, and @jacob-lab.bsky.social 🧠💡
Reposted by Sebastian Hellmann
you heard of running Doom on random gadgets but have you ever heard of…
“Hosting a WebSite on a Disposable Vape”
bogdanthegeek.github.io/blog/project...
this explains how!
((the internet is healing 😌))
#IndieDev
“Hosting a WebSite on a Disposable Vape”
bogdanthegeek.github.io/blog/project...
this explains how!
((the internet is healing 😌))
#IndieDev
Hosting a WebSite on a Disposable Vape
Someone's trash is another person's web server.
bogdanthegeek.github.io
September 28, 2025 at 8:20 AM
you heard of running Doom on random gadgets but have you ever heard of…
“Hosting a WebSite on a Disposable Vape”
bogdanthegeek.github.io/blog/project...
this explains how!
((the internet is healing 😌))
#IndieDev
“Hosting a WebSite on a Disposable Vape”
bogdanthegeek.github.io/blog/project...
this explains how!
((the internet is healing 😌))
#IndieDev
Reposted by Sebastian Hellmann
Just back from this - I was the misfit invited speaker who knows nothing about psychology. It was really educational for me, expanded my view of theory construction problems in the human sciences.
Experts with theoretical traditions, researchers experienced in approaches to theory construction, educators and policymakers work on the first steps toward creating a mature subfield of theoretical psychology. bit.ly/4nLOWoE @annemscheel.bsky.social @bringmannlaura.bsky.social @jmbh.bsky.social
September 27, 2025 at 8:06 AM
Just back from this - I was the misfit invited speaker who knows nothing about psychology. It was really educational for me, expanded my view of theory construction problems in the human sciences.
Reposted by Sebastian Hellmann
Introducing hMFC: A Bayesian hierarchical model of trial-to-trial fluctuations in decision criterion! Now out in @plos.org Comp Bio.
led by Robin Vloeberghs with @anne-urai.bsky.social Scott Linderman
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#PsychSciSky #Neuroscience #Neuroskyence
led by Robin Vloeberghs with @anne-urai.bsky.social Scott Linderman
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#PsychSciSky #Neuroscience #Neuroskyence
September 25, 2025 at 9:13 AM
Introducing hMFC: A Bayesian hierarchical model of trial-to-trial fluctuations in decision criterion! Now out in @plos.org Comp Bio.
led by Robin Vloeberghs with @anne-urai.bsky.social Scott Linderman
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#PsychSciSky #Neuroscience #Neuroskyence
led by Robin Vloeberghs with @anne-urai.bsky.social Scott Linderman
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#PsychSciSky #Neuroscience #Neuroskyence
Reposted by Sebastian Hellmann
"Learning to be confident: How agents learn confidence based on prediction errors"! Now out in @cognitionjournal.bsky.social led by @pierreledenmat.bsky.social
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#AcademicSky #PsychSciSky #Neuroscience #Neuroskyence
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#AcademicSky #PsychSciSky #Neuroscience #Neuroskyence
September 25, 2025 at 8:44 AM
"Learning to be confident: How agents learn confidence based on prediction errors"! Now out in @cognitionjournal.bsky.social led by @pierreledenmat.bsky.social
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#AcademicSky #PsychSciSky #Neuroscience #Neuroskyence
Paper: desenderlab.com/wp-content/u... Thread ↓↓↓
#AcademicSky #PsychSciSky #Neuroscience #Neuroskyence
Reposted by Sebastian Hellmann
A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue.
The effect presumably comes from the absence of S-cones in the fovea.
From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
The effect presumably comes from the absence of S-cones in the fovea.
From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
September 24, 2025 at 12:04 PM
A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue.
The effect presumably comes from the absence of S-cones in the fovea.
From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
The effect presumably comes from the absence of S-cones in the fovea.
From Hinnerk Schulz-Hildebrandt:
arxiv.org/pdf/2509.115...
Reposted by Sebastian Hellmann
Excited to share joint work with Ulf Hahnel and @sgluth.bsky.social on investigating how attribute translations - a widely implemented behavior intervention - lead to more ecological consumer choices. Main results are below, but check out our preprint 👇
www.researchsquare.com/article/rs-7...
www.researchsquare.com/article/rs-7...
Computational Mechanisms of Attribute Translations
Attribute translations, a choice architecture intervention technique aiming to promote behavior change by translating decision-relevant information into more comprehensible and meaningful units for la...
www.researchsquare.com
September 8, 2025 at 7:32 AM
Excited to share joint work with Ulf Hahnel and @sgluth.bsky.social on investigating how attribute translations - a widely implemented behavior intervention - lead to more ecological consumer choices. Main results are below, but check out our preprint 👇
www.researchsquare.com/article/rs-7...
www.researchsquare.com/article/rs-7...
For all who use Bayesian hierarchical models, have a look at our new preprint, out now together with @linushof.bsky.social @nunobusch.bsky.social and @thorstenpachur.bsky.social
osf.io/preprints/ps...
osf.io/preprints/ps...
osf.io
September 10, 2025 at 2:41 PM
For all who use Bayesian hierarchical models, have a look at our new preprint, out now together with @linushof.bsky.social @nunobusch.bsky.social and @thorstenpachur.bsky.social
osf.io/preprints/ps...
osf.io/preprints/ps...
Reposted by Sebastian Hellmann
We know that a consensus of opinions is persuasive, but how reliable is this effect across people and types of consensus, and are there any kinds of claims where people care less about what other people think? This is what we tested in our new(ish) paper in @psychscience.bsky.social
August 10, 2025 at 11:12 PM
We know that a consensus of opinions is persuasive, but how reliable is this effect across people and types of consensus, and are there any kinds of claims where people care less about what other people think? This is what we tested in our new(ish) paper in @psychscience.bsky.social