Guillermo Solovey

New study by @ncomay.bsky.social, @guillermosolovey.bsky.social & @pablobarttfeld.bsky.social at JEP:lmc: "Decisions are based on less information than metacognitive judgments in multialternative contexts" doi.org/10.1037/xlm0...

Pre- and post-decision signals of certainty in changing minds In a recent study, Goueytes and colleagues combined computational modeling with intracranial recordings to dissect the neural basis of confidence and changes of mind. They reveal a temporally organize...

Our spotlight article on Goueytes et al. (2025) study is now online at Trends in Neurosciences: "Pre- and post-decision signals of certainty in changing minds", by P. Barttfeld, @ncomay.bsky.social, I. Embon & @guillermosolovey.bsky.social www.cell.com/trends/neuro...

‘Scienticide’ in Argentina sparks huge protest by researchers Hundreds of activists wearing gas masks took to the streets to call out their government for slashing science funding.

More than 1,000 scientists took to the streets yesterday in Buenos Aires and other cities in Argentina wearing gas masks to protest the collapse of science in the country, which they say was initiated by their government.

https://go.nature.com/43QWX4f

Vamos que armamos la versión local!

The psychology of conspiracy and misinformation beliefs This Collection explores cognitive, social and affective processes driving conspiracy and misinformation belief formation as well as the resistance to ...

The paper is now part of the collection “The psychology of conspiracy and misinformation beliefs” together with a lot of interesting papers on this topic.
www.nature.com/collections/...

Our study conceptually replicates and extends previous research, with a novel focus on political statements (rather than fake news). It also adds evidence from a Spanish-speaking country (Argentina), often underrepresented in misinformation studies.

We also found 
📌 weak (unreliable) evidence for a positive association between cognitive reflection and truth discernment. 
📌 cognitive reflection did not reliably increase partisan bias.

Interestingly, political concordance enhanced truth discernment, albeit accompanied by a shift in response bias. Partisan bias was much larger than the improvement of truth discernment with political concordance.

We found reliable evidence that:

📌 higher political concordance➡️ more overall belief (i.e. partisan bias).
📌 higher political concordance➡️ better truth discernment.
📌 higher cognitive reflection ➡️ lower overall belief (more scepticism).

Understanding belief in political statements using a model-driven experimental approach: a registere... Scientific Reports - Understanding belief in political statements using a model-driven experimental approach: a registered report

Happy to share our new paper:

Misinformation belief 🤝 Signal Detection Theory and Bayesian modeling

A registered-report study to understand how partisanship and cognitive reflection explain belief in (true/false) political statements. Key findings below.

www.nature.com/articles/s41...