Andrey Chetverikov

@achetverikov.bsky.social

Associate Professor in Cognitive Psychology at the University of Bergen, Norway. I study decision-making and biases in perception and visual working memory, with occasional forays into higher level decisions. https://andreychetverikov.org

What, and I cannot stress this enough, the actual fuck? Do you know what a security guard on a UK campus carries? A stab vest, a radio, and some training in mental health and deescalation. Assault rifles? Wow. Such a messed-up country. www.theguardian.com/us-news/2026...

‘We will never use them’: the California universities stockpiling AR-15s, grenades and submachine guns

A 2021 state law allows campus police to own military equipment for civilian safety – students fear it may be used to quash dissent

theguardian.com

1/ Can AI help researchers check whether published social science results actually reproduce? In our new PNAS paper, we tested this directly in the AI Replication Games: 288 researchers, 103 teams, and real replication packages from quantitative social science.

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I think this genuinely can be a good thing. An automated agent that a) tries to run the code to see if it does what it is supposed to do and b) checks it for conceptual or implementation errors (code can run but be very wrong nevertheless).

Stefano Palminteri@stepalminteri.bsky.social · 3mo ago

Many journals already require authors to upload data and code. A near-future where an LLM systematically checks the analysis and the code of every published study is realistic. Believe it or not, I think this is the future of scientific publishing.

Do you know what to do when a study you have cited gets retracted? COSIG's entry on Citations to Retracted Publications has been updated with what to do in this situation. Read all about it: osf.io/9q3as

COSIG: The Collection of Open Science Integrity Guides
Newest version available at cosig.net!

Fascinating. Important. The stunning thing I’ve seen as an editor, reviewer, & educator, is the use of generative AI to accelerate low quality work. Rather than use these tools to do more ambitious scholarship, there is a race to the bottom. This post, the first in its series, documents exactly that

Katie Corker@katiecorker.bsky.social · 3mo ago

Fascinating deep dive into the characteristics of papers and peer reviews at a journal, with a lookback pre-COVID and pre-chatGPT. Papers and reviews showing more signs of AI over time, but also lower writing quality. orgsci.substack.com/p/more-versu... orgsci.substack.com/p/more-versu...

We have 3 PhD positions at our department (www.jobbnorge.no/nn-no/ledige...). Know a good student interested in working with me on perception / visual memory? I'd be happy to support the proposal! A catch: this person must speak a Scandinavian language as the position implies some teaching duties.

Tre stipendiatstillingar ved Institutt for samfunnspsykologi (299274) | Universitetet i Bergen

Stillingstittel: Tre stipendiatstillingar ved Institutt for samfunnspsykologi (299274), Arbeidsgivar: Universitetet i Bergen, Søknadsfrist: søndag 16. august 2026

jobbnorge.no

My first foray into explicitly trying to bridge Marr’s levels, with @bealebrains.bsky.social. Inspired by Hahn and Wei’s models (pubmed.ncbi.nlm.nih.gov/38360947/), we wondered how the brain could instantiate sensory inference with efficient /decoding/ properties. 1/

bioRxivpreprint@biorxivpreprint.bsky.social · 4mo ago

On the inseparability of the prior and neural resources in behavioural bias https://www.biorxiv.org/content/10.64898/2026.04.07.714659v1

My recent comment extends Shiffrin et al.'s (2026) essay on "Illusions of understanding". While they focused on multiple ways of understanding linear regression, I extend these ideas to a complex model class in cognitive science: Evidence Accumulation Models (EAMs). (1/6)👇

This is great! I've used Stan and JAX separately for different projects in the past, both are great, so hopefully this will be a huge step forward towards making Bayesian models faster. And then perhaps brms can now be used with Stan -> Jax as well?

Ben Schneider @bschneidr.bsky.social · 4mo ago

👀 looks like the core Stan folks are pretty bullish on Jax as the software of choice for fitting Bayesian models bob-carpenter.github.io/dj-paper/