Willem Sleegers

A Multilab Replication of the Induced-Compliance Paradigm of Cognitive Dissonance - David C. Vaidis, Willem W. A. Sleegers, Florian van Leeuwen, Kenneth G. DeMarree, Bjørn Sætrevik, Robert M. Ross, Ka... According to cognitive-dissonance theory, performing counterattitudinal behavior produces a state of dissonance that people are motivated to resolve, usually by...

Listening to the episode now and the section on cognitive dissonance pushed me to share this paper of ours: journals.sagepub.com/doi/full/10....

Reasons to be skeptical of cognitive dissonance theory!

What are the current recommendations for online multilevel modeling tutorials?

Got multiple opinions here but one is about the ordering in the Methods section. I think it's generally in the wrong order: www.willemsleegers.com/blog/8-the-r...

Could anyone share some examples/references to instances where an original mediation analyses was later shown to be the result of confounding? I'm sure there are lots of theoretical examples, but would be nice to see some empirically demonstrated examples!

While writing you run npm dev and velite watch so that when you render a Quarto doc it automatically refreshes.

I use Quarto files in mine, but the actual website is built using Next.js, React, and velite: www.willemsleegers.com

I like Quarto and all, but the website functionality they offer is too restricting if you want full control.

Yup. I think it's very important to consider how the public looks at these kinds of studies. Researchers need to have a good explanation for why these studies are worth doing. Satisfying your curiosity is not one of them.

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We can't wait to learn from our keynote speakers at the PHAIR Animal Advocacy Conference 2025 📣

#animaladvocacy

Welcome to the Society for the Psychology of Human Animal Intergroup Relations (PHAIR) BlueSky page! 💙

Here we aim to advance and promote scientific research on moral and social psychology, diet and health, human-animal relationships, sustainability and environmental psychology. 🌱

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I can think of something obvious that makes liking kebab somewhat problematic!

It happened again, I revamped my website: www.willemsleegers.com

Bem's Feeling the Future paper.

I think it's worth thinking about whether we already are sufficiently convinced the evidence from the literature is too weak and that instead of running a project on further establishing that there should be more future-oriented projects aimed at testing CDT instead.

Looks very interesting! I put it on my wish list for the holidays. ;)

Check out the commentaries to our paper, as well as our response! For those interested in cognitive dissonance, I think these make for an interesting read.

Seems fine to me. =)

What is the status of Nisbett & Wilson's (1978) Telling More Than We Can Know paper? Are there any good replications/reviews? (I couldn't find any quickly).

🐶Now out in PHAIR 🐶

Does generalized prejudice extend across species lines?

I used data from the LISS panel & the European Values Study to test if people who devalue human outgroups also tend to devalue the welfare and interests of non-human animals.

doi.org/10.5964/phai...

I should be doing more to spread our paper around, although it's hard to find the time now that I'm not in academia anymore. Thankfully we did receive several Commentaries on the paper and we got to write a Reply, which will hopefully be published soon and maybe spark some debate!

A Multilab Replication of the Induced-Compliance Paradigm of Cognitive Dissonance - David C. Vaidis, Willem W. A. Sleegers, Florian van Leeuwen, Kenneth G. DeMarree, Bjørn Sætrevik, Robert M. Ross, Ka... According to cognitive-dissonance theory, performing counterattitudinal behavior produces a state of dissonance that people are motivated to resolve, usually by...

I feel like social media has failed me. Somehow I didn't hear about this failure to replicate the induced compliance paradigm for cognitive dissonance: journals.sagepub.com/doi/full/10.... - would love to hear what people closer to this research make of the finding.

The question is how fit would you have been without having two kids! I think the kids can also be blamed for tiredness when they're not around!

Two research positions (a Research Fellow and a Junior Research Scientist position) on the psychology of global catastrophic risk and effective altruism: www.eapsychology.org/jobs

No hard feelings at all! I truly do appreciate the feedback and your (re)posts. =)

I think this is kinda pedantic, though. It's far from the most important thing to focus on when reposting this finding. The feedback is appreciated but I'd rather see the first considerations to be about what the results mean for the dissonance literature (and psychological research in general).

Yeah, we used the same title we used throughout the whole registered report process. I suppose we could have changed the title once we knew the results (don't see a reason why not), but this did not come to mind.

In conclusion, all of the considerations detailed above lead us to concur with Asch's (1958) evaluation of the evidence for cognitive dissonance theory, and return once more a verdict of NOT PROVEN.

Indeed. Others voiced some pretty strong criticism around that time about it. Here's a quote from Chapanis & Chapanis (1964):

Very pleased to see this project led by @vaidis.bsky.social and @willemsleegers.bsky.social published! If you have any interest in the replicability (or lack thereof) of a classic cognitive dissonance paradigm you'll want to read the paper 👇

A Multilab Replication of the Induced-Compliance Paradigm of Cognitive Dissonance

It's finally out! Our large-scaled replication attempt of the induced compliance paradigm in the study of cognitive dissonance:
journals.sagepub.com/doi/10.1177/...

Now out at EJP
w/ @willemsleegers.bsky.social, @juliastern.bsky.social, @larspenke.bsky.social, @alexjonesphd.bsky.social

doi.org/10.1177/0890...

We tested how accurate people are at judging others' personality based on a facial photograph & whether they are aware of their own (in)accuracy. A🧵