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Ian Hussey @ianhussey.mmmdata.io · 14/09/2026

I was glad this point was covered by retractionwatch. Whether the work was affiliated with the university cannot depend on it being retracted. Affiliation determines what research integrity committee has oversight; this should be no-takesy-backsies when things go south.

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Ian Hussey @ianhussey.mmmdata.io · 13/09/2026

Reviews point out that it reads like AI slop, so I checked. The book contains 58 references to scientific articles and books. At least 6 are completely hallucinated. Several other are articles irrelevant to the claim. This is ironic given the author's public statements regarding AI and its misuse.

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Ian Hussey @ianhussey.mmmdata.io · 13/09/2026

Separately, the author of the retracted article has written a book called "100 Ways to Future-Proof Your Brain" which she claims has sold over 100k copies. This would be remarkable given its negative reviews www.goodreads.com/book/show/23...

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Ian Hussey @ianhussey.mmmdata.io · 20/08/2026

I can make some guesses why. Having worked there, UGent has had issues with far right activity and Flanders as a whole increasingly swings that way. Another scandal while I was there: nl.wikipedia.org/wiki/Schild_...

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Ian Hussey @ianhussey.mmmdata.io · 13/08/2026

Any suggestions for semi-popular online chi-square calculators? Sometimes less experienced people use them. To validate my {recalc} package, I'm reverse engineering them to make sure the package accommodate their results, as long as they're correct and sane. These are the ones I have already.

* https://www.statscalculators.com/
* https://www.statskingdom.com/
* https://www.omnicalculator.com/statistics
* https://www.statulator.com/
* https://www.danielsoper.com/statcalc/default.aspx
* https://statisticscalculators.com/
* https://statpages.info/
* https://numiqo.com/statistics-calculator/descriptive-statistics
* https://www.standarddeviationcalculator.io/chi-square-calculator
* https://www.socscistatistics.com/tests/chisquare/
* https://www.medcalc.org/en/calc/chisquared-2way.php
* https://www.socscistatistics.com/tests/chisquare2/calculator/
* https://biomath.med.uth.gr/statistics/chi_square.html
* https://www.appinio.com/en/tools/chi-square-calculator

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Ian Hussey @ianhussey.mmmdata.io · 03/08/2026

Here you can see the near zero correlations between the PTP (and its subscales) with other established measures and their subscales. Disattenuating for reliability doesn't rescue the situation.

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Ian Hussey @ianhussey.mmmdata.io · 03/08/2026

New Jingle assessment: we show that the "Perspective Taking Protocol" has very poor reliability and near-zero convergent validity with other nominal measures of emotional and spatial perspective taking, empathy, and theory of mind. w/ @malte.the100.ci

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Ian Hussey @ianhussey.mmmdata.io · 21/07/2026

And recalculating the SMD effect size from Ahmadpanah's M/SD/Ns for sleep quality under a variety of assumptions produces SMD estimate between [0.50. 0.58], not the meta's 2.38. Maybe I'm missing sth obvious of course. errors.shinyapps.io/recalc_indep...

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Ian Hussey @ianhussey.mmmdata.io · 21/07/2026

Well, out of the gate, I don't think the numbers in Ahmadpanah match the numbers for Ahmadpanah reported in Zhang's meta-analysis.

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Ian Hussey @ianhussey.mmmdata.io · 29/06/2026

I have managed to abstract the template for replies to critiques.

A reply to critique

In this reply to the recent critique of our article, we: mischaracterize the critique; mischaracterize our own original claims; respond only to the peripheral arguments while remaining silent about the critique’s most devastating points; claim that the issues raised do not affect our core conclusions, regardless of whether this is the case or not; radically change the implied generality of our original claims; commit ad hominem while accusing others of it; and leverage the fact that we are likely to have the last word to generally muddy the waters.

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Ian Hussey @ianhussey.mmmdata.io · 21/06/2026

Negative controls are very useful for spotting errors and data quality issues. If 1/3 of participants disagree that playing poker in person for real money is gambling, broader questions are raised about the other findings. pubpeer.com/publications...

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Ian Hussey @ianhussey.mmmdata.io · 17/06/2026

Time for me to roll this out again

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Ian Hussey @ianhussey.mmmdata.io · 03/06/2026

So this response to critique is that… @kauspurg.bsky.social is *too experienced* in writing critiques?? The argument for bias is also silly. People read many articles and write critiques of the ones with particular issues. Very bad response.

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Ian Hussey @ianhussey.mmmdata.io · 03/06/2026

Did someone say “explanatory fiction”?

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Ian Hussey @ianhussey.mmmdata.io · 03/06/2026

The {recalc} R package has been updated to do this, as well as various other forms of recalculation of reported stats - while taking the uncertainty introduced by rounding into account. github.com/ianhussey/re...

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Ian Hussey @ianhussey.mmmdata.io · 03/06/2026

Mediation analysis is surprisingly easy to verify using reported betas, p values, and Ns. Eg the indirect a*b path should be, well, a multiplied by b. Sometimes its not, like in this article claiming SSRI efficacy is mediated by expectations. Whoops. pubpeer.com/publications...

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Ian Hussey @ianhussey.mmmdata.io · 19/05/2026

Research Integrity investigations can take time, and EoC's are intended to flag editors' concerns to readers. i.e., COPE's EoC guidelines: publicationethics.org/guidance/gui...

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Ian Hussey @ianhussey.mmmdata.io · 07/05/2026

@taymalsalti.bsky.social has done trojan work trying to reproduce the results of three meta-analyses, finding the usual host of issues of effect sizes that are apparently incorrect or non-reproducible Our article is out now: doi.org/10.1111/ejn....

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Ian Hussey @ianhussey.mmmdata.io · 07/05/2026

On the basis of a consistency check between reported R2 and Std. Beta values that I did for this pubpeer comment, I have updated the {recalc} R package to make this easy to do elsewhere.

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Ian Hussey @ianhussey.mmmdata.io · 07/05/2026

Eagle-eyed @grinschglsandra.bsky.social spotted this mess of a plot, with bars that don't match percentages. We, with @malte.the100.ci, quantify a host of other issues we spotted here. pubpeer.com/publications...

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Ian Hussey @ianhussey.mmmdata.io · 19/04/2026

Reminder: If researchers find Cohen's d = 6, no they didn't. trustworthy.scientific.claims/posts/if-res...

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Ian Hussey @ianhussey.mmmdata.io · 18/04/2026

Claude living up to its reputation for better alignment

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Ian Hussey @ianhussey.mmmdata.io · 07/04/2026

Fun facts - The original study reported 23 IQ point gains - Jordan Peterson tweeted about it (sort of) - @jamiecummins.bsky.social new preregistered RCT shows null effects

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Ian Hussey @ianhussey.mmmdata.io · 28/03/2026

Not to be an uber pedant/nerd, but i'm fascinated by the plausibility of SMD effect sizes and so collect really large ones. The whole government change between year is about Cohen's d = 1.14, whereas we recently estimated the preference for chocolate over poop as Cohen's d = 5.57.

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Ian Hussey @ianhussey.mmmdata.io · 12/02/2026

Plotting the effect sizes included in the meta immediately shows something is likely off, as the distribution is highly bimodal and has huge magnitude d values. One key thing that can cause bimodality in meta effect: systematic confusion of SE and SD for many of the effect sizes.

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Ian Hussey @ianhussey.mmmdata.io · 05/02/2026

{psychdsish} R package to create standardized structured projects for psychological research projects processed and analyzed in R: github.com/ianhussey/ps...

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Ian Hussey @ianhussey.mmmdata.io · 05/02/2026

Early draft of my ebook for the course: ianhussey.quarto.pub/reproducible...

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Ian Hussey @ianhussey.mmmdata.io · 05/02/2026

Basic questions like "how many participants are in the dataset?" can produce surprisingly different answers between analysts. Results from students in my class in data wrangling in tidyverse, who are good at wrangling but still have to make semi-subjective choices:

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Ian Hussey @ianhussey.mmmdata.io · 29/01/2026

Great talk from @lhdjung.bsky.social at the SwissRN Research-On-Research day on his, our, and other folks' work to develop trustworthiness assessment tools. Finally his {scrutiny} R package has a logo!

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Ian Hussey @ianhussey.mmmdata.io · 27/01/2026

"The research literature is an unsafe workplace" by @jabyrnesci.bsky.social and @aidybarnett.bsky.social Really insightful framing! www.tandfonline.com/doi/full/10....

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Ian Hussey @ianhussey.mmmdata.io · 26/01/2026

When we combine this with the results of the 2015 replication, we get a choose your own analytic adventure. Even putting the design issues aside and taking the data at face value, no end point leads the reader to conclude that hierarchy interventions are more effective than distinction.

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Ian Hussey @ianhussey.mmmdata.io · 26/01/2026

The raw data is now lost to the sands of time, but a multiverse analysis can still be conducted on the differences between the conditions at post by extracting data from the figures. Results show no differences in means under any set of analytic choices.

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Ian Hussey @ianhussey.mmmdata.io · 26/01/2026

Foody et al 2013 contains no control condition. People often raise the point that such designs are potentially confounded by regression to the mean. This isn't hypothetical here: the authors cite previous work using the same induction procedure that shows their results are entirely explained by R2M.

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Ian Hussey @ianhussey.mmmdata.io · 26/01/2026

We had lots of debates about avoiding "The B word" altogether when writing this, but thankfully @sabrinanorwood.bsky.social pushed us to embrace it. Don't let it turn you off: evaluate the ideas on their merits. Try out, uh, "Flinner's Environmentalism" ... you might like it.

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Ian Hussey @ianhussey.mmmdata.io · 25/01/2026

Apparently yes, since you keep subtweeting my and my colleagues work.

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Ian Hussey @ianhussey.mmmdata.io · 25/01/2026

Keeping this for the next time someone says that it is meta scientists who engage in baseless attacks or have a tone problem, rather than people who clearly haven’t read the work and its demonstrations and justifications of what is problematic to what end.

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Ian Hussey @ianhussey.mmmdata.io · 15/01/2026

Academic life is just repeating this to one another until we retire @jamiecummins.bsky.social

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Ian Hussey @ianhussey.mmmdata.io · 12/01/2026

Me: surely at least the statistics literature has its house in order. The stats literature:

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Ian Hussey @ianhussey.mmmdata.io · 07/01/2026

Surely our job is to critically evaluate research, not merely repeat authors' talking points. Your opening tweet is a clearly causal claim that you've repeated, which immediately doesn't stand up to scrutiny. This is a ubiquitous critique of this type of work.

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Ian Hussey @ianhussey.mmmdata.io · 21/12/2025

Your last saved meme is your moral philosophy

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Ian Hussey @ianhussey.mmmdata.io · 18/12/2025

Oliver Sacks admitted his case studies in The Man Who Mistook His Wife For A Hat were fraudulent “fairy tales”. What Psych101 core texts are left? www.newyorker.com/magazine/202...

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