Sebastian Hellmann

2019 hat die AfD intern darüber diskutiert, zumindest öffentlich den Klimawandel nicht mehr zu leugnen. Der zuständige Fachausschuss lehnte das u.a. deswegen ab, weil sich die AfD-Positionen dann kaum noch von der FDP unterscheiden würden.

Friedrich Merz hat keine Ahnung von der Lebensrealität Alleinerziehender and it shows. Denn bei denen wird fröhlich gekürzt während uns zum Beispiel bei der Erbschaftssteuer Geldsummen durch die Lappen gehen, von denen Alleinerziehende nur träumen können.

Friedrich Merz und Lars Klingbeil gelingt es offenkundig nicht, die Menschen in Deutschland abzuholen. Dabei ist es gerade jetzt so wichtig, Zusammenhalt und Zuversicht zu verbreiten. Die Koalition muss ihr öffentliches Auftreten dringend ändern. @britta-hasselmann.de

Mal wieder ein Blick zum Mars. Bild des Curiosity-Rovers. Infos und ganzes Panorama hier: www.nasa.gov/missions/mar...

📣 Delighted to share that I have joined WU (Vienna University of Economics and Business) as Professor of Artificial Intelligence and Behavioral Science. Announcements for at least one postdoc-level position will follow soon. Please reach out if you are interested.

🎁 Best birthday present this week was finally finishing and preprinting this big project: Together with @thorstenpachur.bsky.social, we investigated how loss aversion in risky choice is affected by how we learn about our options. 📖 Full-text here: lnkd.in/eKu2AEwB

📣 NEW PREPRINT ALERT! 📣 📝Preprint: www.biorxiv.org/content/10.6... When choosing between options with multiple attributes, what does the brain actually compare - individual attributes or integrated option values? We combined EEG + eye-tracking to find out... and found evidence for the latter 🧠

I expect to recruit a PhD student this cycle! The Control and Decision Making Lab at WashU studies control, effort, and decision making, combining behavioral experiments with modeling and neuroimaging. If that sounds cool, check out our work: cdmlab.wustl.edu. How to apply: psych.washu.edu/apply

Excited to share that I'll be starting as a junior professor and Emmy Noether awardee at the University of Göttingen this October! 🥳 🚀 I'll be hiring #phd students and #postdoc across #machinelearning, #neuroscience and #cogsci: modirlab.github.io/open-positio... Please spread the word! 🙏

Excited to share our new preprint! 🎈 We reversed risk contingencies in the Balloon Analogue Risk Task and used computational models to reveal latent risk-taking mechanisms missed by standard measures. Huge thanks to @franziskaknolle.bsky.social & @thorstenpachur.bsky.social! osf.io/preprints/ps...

Reihenweise Atomkraftwerke in Staaten wir Ungarn, Rumänien und Frankreich gehen wegen der Hitzewelle und niedriger Wasserstände in den Flüssen in die Knie. In Ungarn löst das gerade eine riesige Energiekrise mit explodierenden Strompreisen und Engpässen aus.

TeaP 2027 (Tagung experimentell arbeitender Psycholog:innen /Conference of experimental psychologists) Mannheim, Germany 21-24 March 2027 Contributions welcome from all topics in Experimental Psychology and neighbouring fields using the experimental method.

A bee analogue of Kohler's insight learning experiments

The 2026 Rousseeuw Prize for Statistics has been awarded to the R Project. #RStats www.rousseeuwprize.org/2026

Excited to announce that I'll be starting my own lab in Tübingen this October! Hiring at all levels: Postdoc, PhD & RA. Want to work on computational cognitive science at scale? Apply: core-cognition.github.io Reposts and shares much appreciated 🙏

RA position open at @BCBL_eu (San Sebastian, Spain)! Work on decoded neurofeedback, fMRI/fNIRS/EEG, and ML to study how subjective experience can be shaped. 2-yr contract, starts Sept. 2026. Deadline: June 30. Apply here shorturl.at/Xw4pn Please RT! @hakwan.bsky.social @meganakpeters.bsky.social

Our paper about the dynConfiR package, headed by the @sehellmann.bsky.social, is now out in Behavior Research Methods: link.springer.com/article/10.3.... The dynConfiR package can be used to fit dynamical models of binary choices, reaction time, and decision confidence.

🚨 Our database is published in Behavior Research Methods: link.springer.com/article/10.3... with Maximilian Stadler and @franziskaknolle.bsky.social If you plan on working with German speech stimuli, check out our osf for auditory stimuli and our online tool for selecting sentence material 🪄

I want diplomats recalled from the US. I want renegotiations about US bases in Europe. I want an official boycott of the World Cup by all participating nations. I want new articles of impeachment filed every single day. Play time is over. Act like adults or make way for those who do.

I would have preferred to have the "draw the rest of the owl" meme on the cover, but this will do. Seems like it is on schedule, and we'll leave some typos so you know we didn't write it with AI.

I am thrilled to announce the European Summer School on Eye Movements! #ESSEM2026 takes place 7-12 September, 2026, at the Institute of Psychiatry, Psychology & Neuroscience, King’s College London. Further details including info on how to register can be found here: essem2026.org

A viral dog rescue from 2016 is now immortalized with a statue in Kazakhstan. When a dog fell into the Sayran reservoir, bystanders formed a human chain to pull him to safety. The statue is a reminder of the value of unity, solidarity and collective action. 14/10 for all

How do people search for information to make efficient decisions? Our new theory, now out in Psychological Review, suggests that an efficient search rule is (at the core of) the answer. And eye-tracking data support our theory. Check out here (it's open access): psycnet.apa.org/fulltext/202...

@teap2026.bsky.social is over: 4 days, 10 workshops, 1 public lecture by @jensfoell.de, 3 keynotes, 80 talk sessions, and 3 poster sessions 👍🏼 Co-organizing this international experimental-psychology conference with Franziska Rück and Barbara Kaup, we brought over 700 researchers to Tübingen 😊

Curious about how context influences decision-making? 👀🧠 Make sure to check out our symposium on Wednesday 11:00-12:30 at Room N2 #TeaP2026 Featuring✨ @tiborstoe.bsky.social @nunobusch.bsky.social @dmding.bsky.social @barbaraoberbauer.bsky.social

I tracked every keyword in 22 years of Cosyne abstracts to map how computational neuroscience evolved — from Bayesian brains to neural manifolds to LLMs — and where it's heading next.

Our new paper is out in Cognition! What determines whether confidence follows the classic "folded-X" pattern vs. the "double-increase" pattern? The answer lies in the type of stimulus manipulation. Big thanks to my advisor Doby @dobyrahnev.bsky.social and co-first author @herrickfung.bsky.social !

Yesterday, we finally got to celebrate the successful PhD defense of our PostDoc @maryamtohidi.bsky.social at a delicious Iranian restaurant😋 We are so proud of Dr Tohidimoghaddam, who continues her journey with us elucidating multi-attribute decision-making🧠 Stay tuned for her future contributions!

Eliminating the Impossible https://xkcd.com/3210/ 'If you've eliminated a few possibilities and you can't think of any others, your weird theory is proven right' isn't quite as rhetorically compelling. Explain xkcd: https://www.explainxkcd.com/wiki/index.php/3210

poor bee GOLD_07, whose embarrassing mistake has been immortalised in a way beyond his comprehension

Compositional data (proportions that sum to 1) behave in ways standard models aren’t built for I walk through why Dirichlet regression is often the right tool & what extra insight it gives using a real ex of eyetracking #Dirichlet #r #brms #guide #eyetracking open.substack.com/pub/mzlotean...

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...

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."

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

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.

Science in 2025

📢 The #TeaP2026 talk & poster submission deadline is approaching fast! ⏰ Don’t miss your chance – submit your contribution by November 16: coms.app/teap26/ 👍🏼

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."

"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-...

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.

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.