Olivier Corneille

A great new preprint on the importance of pilot studies for the validity of studies that are performed. Such an important tooic, that is discussed too little. I especially liked the section on the need for transparent reporting. osf.io/t968e_v1 By @yashvin.bsky.social and collaborators.

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🚨🚨🚨The Berlin Court of Appeal ruled today that @democracyreporting.bsky.social (DRI) is entitled to publicly available data from X to conduct research on election interference and disinformation on X in connection with the elections in Hungary 🗳️ 🇭🇺

democracy-reporting.org/en/office/EU...

(Mic check 1-2-3)

I'm on the job market🚨

I’m a social psychologist building computational models to study social cognition, attitudes, polarization, and how people update beliefs.

Evidence accumulation models, Hierarchical Bayes, Agent-based models, NLP, etc.

Interested in formal theorizing!

Gambling with research quality How you get 244 different ways to measure performance on the same test of decision making. And what it means for the reliability of behavioural science

Read my latest post for reflections on reproducibility, research quality and a summary of a great new study which shows how NOT to do it

https://open.substack.com/pub/tomstafford/p/gambling-with-research-quality

Why single-item measures of wellbeing are best Nature Human Behaviour, Published online: 02 February 2026; doi:10.1038/s41562-026-02401-yWhy single-item measures of wellbeing are best

Why single-item measures of wellbeing are best

Amazing picture !

40 percent of MRI signals misinterpreted Interpretation of numerous MRI data may be incorrect: blood flow is not a reliable indicator of brain activity.

"40 percent of MRI signals do not correspond to actual brain activity"; "Since tens of thousands of fMRI studies worldwide are based on this assumption, our results could lead to opposite interpretations in many of them.”
www.tum.de/en/news-and-...

Closing out my year with a journal editor shocker 🧵

Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...

Early Christmas present! For the last couple of years, I have been helping to update this textbook for a new edition. I joined a great team that had written the original book, and together we thoroughly revised it and updated it with new research and examples. My copies arrived just the other day!

A thread on a new preprint: "Addressing Demand Artifacts In Psychological Research (And Beyond)".

We hope this work sparks discussion and inspires new approaches in psychological research and beyond it !

Demand artifacts threaten both the internal and external validity of research. Often viewed as a "scarecrow" or a "vexing problem," they can discourage researchers from examining them too closely. Yet, our conclusion offers a more optimistic and actionable perspective on these artifacts:

Sixty Years After Orne’s American Psychologist Article: A Conceptual Framework for Subjective Experiences Elicited by Demand Characteristics - Olivier Corneille, Peter Lush, 2023 Study participants form beliefs based on cues present in a testing situation (demand characteristics). These beliefs can alter study outcomes (demand effects). ...

Our review is organized around a recent framework of demand effects proposed by P. Lush and I, which identifies three stages in the production of demand artifacts: hypothesis formation, motivation, and control strategy.

doi.org/10.1177/1088...

Thrilled to share this new preprint, co-authored with @peterlush.bsky.social and Chloé Fournier Bernard!

We offer a broad and structured discussion of leading methods developed in the past >60 years to tackle demand artifacts in psychological research and beyond.

doi.org/10.31234/osf...

(PDF) InteroMap: A Novel Tool to Map the Phenomenology of Bodily Sensations PDF | Interoception, the processing of internal bodily states, contributes to human behaviour through multiple cognitive and affective processes,... | Find, read and cite all the research you need on ...

In a large, preregistered study (see preprint), we compared InteroMap to emBODY. Overall, InteroMap demonstrated superior construct validity and usability
www.researchgate.net/publication/...

Very excited to introduce InteroMap, a new bodily mapping tool designed to measure how we subjectively experience our bodily sensations, what we call interoceptive phenomenology 🧵👇

New publication. Congrats to the whole team, and especially @paulbertin.bsky.social who led this effort. Thanks also to the editor (Nicolas Sommet) and reviewers, who desserve credit for improving our paper.

Thanks to Chloé Fournier Bernard, @mayanna.bsky.social and @jeremybena.bsky.social for the inspiring collaboration !

We discuss whether this Truth Beliefs Conditioning effect should be considered an experimental demand artifact, and whether it matters.

This research follows-up on a recent article that examined three outstanding questions raised by instruction-based procedures:

doi.org/10.1525/coll...

In this new research, we found that truth beliefs can be successfully conditioned:

Statements - true and false - are rated as more true after their pairing with positive than negative pictures.

This effect bridges research on evaluative conditioning and misinformation.

osf.io/preprints/ps...

This overturns familiar assumptions of perceivers as “cognitive misers” and calls for rethinking how we conceptualize automatic evaluations.

Even with skin tone as a group marker and explicit instructions to form group-based impressions, people relied more on the actual characteristics of the individual they encountered.

In this research, we found that individuating information dominates social group information when forming impressions about members of newly learned social groups. This dominance was observed both on self-reports *and* more automatic measures *despite* conditions favoring group-level impressions.

Evaluative Conditioning has a Vexing Demand Problem Attitude research has long been concerned with the potential influence of demand characteristics in evaluative conditioning effects. Here, we argue that this concern remains justified and cannot be r....

In case you find it useful, we have recently elaborated on this issue here (see section 5.1): doi.org/10.1111/spc3...

I found the general discussion rather cautious, but this point might be further elaborated on. Another issue is that these manipulations are sometimes totally ineffective (Ps simply don't trust a hypothesis that runs against commonsense) but this does not seem to apply in this case 3/

As a result, demand effects may operate differently in these studies vs. in original procedures where the experimental hypothesis is not directly communicated. The same issue applies when probing demand effects based on instruction-based replication procedures 2/

If I may add a few thoughts, a major issue with this widespread approach to demand effects is that experimenters usually do not tell their Ps about their hypothesis. This communication creates unique demand characteristics that may consequentially depart from the original procedure 1/

Congratulations, Ian !

bsky.app/profile/chem...