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rogier kievit @rogierk.bsky.social · 7d

Gather round, all those bayes curious, pragmatic, committed or indifferent, for an elegant and flexible way to approach reliability estimation using bayesian measurement models! All thoughts and ideas welcome

Giacomo Bignardi @bignardi.bsky.social · 7d

New preprint with @rogierk.bsky.social @paulbuerkner.com - we introduce "relative measurement uncertainty" - a reliability estimation method that's applicable across a broad class of Bayesian measurement models (e.g., generative-, computational- and item response theory-models osf.io/h54k8

OSF

osf.io

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rogier kievit @rogierk.bsky.social · 8d

I've been an AE at AMPPS for almost 5 years so happy to answer any questions - It's a fantastic opportunity to help shape methodological innovation and dissemination (and get the first glimpse of exciting new work!)

Felix Thoemmes @felixthoemmes.bsky.social · 8d

Excited to share that I’ll be the incoming Editor of AMPPS. My first priority is building a diverse team of Associate Editors and Editorial Board members. If you’re interested, DM me or add your name via this super simple survey.
cornell.ca1.qualtrics.com/jfe/form/SV_...
Please share!

Qualtrics Survey | Qualtrics Experience Management

The most powerful, simple and trusted way to gather experience data. Start your journey to experience management and try a free account today.

cornell.ca1.qualtrics.com

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David A. Sbarra @dsbarra.bsky.social · 21d

Do you want to get serious about specifying your random-effect structures? This paper might be for you.. plus lots of good stuff about multilevel and dyadic modeling: doi.org/10.1177/2515...

A Practical Guide to Specifying Random Effects in Longitudinal Dyadic Multilevel Modeling - Kareena S. del Rosario, Tessa V. West, 2025

Analyzing over-time dyadic data can be challenging, particularly when using multilevel models with complex random-effect structures. In this tutorial, we discus...

doi.org

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Lea Michel @leacmichel.bsky.social · 23d

Choosing to go by train/ferry to #Flux2025 I emitted SEVEN times less C02 compared to a plane trip.

Air travel is one of the largest contributors to the carbon footprint of research. Researchers, universities and conferences have the responsabilities to create more sustainable alternatives.

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Mike Frank @mcxfrank.bsky.social · 22d

A first blogpost from the LEVANTE team, introducing our global project perspective.

A good intro if you're interested in learning more about cross-cultural developmental data collection using LEVANTE.

levante-network.org/global-colla...

Global Collaboration to Capture Variability in Child Development - Levante

Ensuring that children around the world can flourish is one of the most important goals of our time. Developmental science has made major strides in understanding how children grow, learn, and thrive ...

levante-network.org

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rogier kievit @rogierk.bsky.social · Sep 8

happy to share if you send me your current email. Main thing to know is the B1/B2 distinction and that you have to finish both. Two schools of thought are to finish the detailed B2 and compress to B1, or finish the big picture B1 and expand. I prefer the former (the details affect the big picture).

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Mike Frank @mcxfrank.bsky.social · Sep 8

The Item Response Warehouse is a new data resource for psychometricians interested in developing methods using bigger and more diverse sets of instruments: itemresponsewarehouse.org

New paper out now at BRM: doi.org/10.3758/s134...

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Olivia Guest · Ολίβια Γκεστ @olivia.science · Sep 6

Finally! 🤩 Our position piece: Against the Uncritical Adoption of 'AI' Technologies in Academia:
doi.org/10.5281/zeno...

We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical
thinking, expertise, academic freedom, & scientific integrity.
1/n

Abstract: Under the banner of progress, products have been uncritically adopted or
even imposed on users — in past centuries with tobacco and combustion engines, and in
the 21st with social media. For these collective blunders, we now regret our involvement or
apathy as scientists, and society struggles to put the genie back in the bottle. Currently, we
are similarly entangled with artificial intelligence (AI) technology. For example, software updates are rolled out seamlessly and non-consensually, Microsoft Office is bundled with chatbots, and we, our students, and our employers have had no say, as it is not
considered a valid position to reject AI technologies in our teaching and research. This
is why in June 2025, we co-authored an Open Letter calling on our employers to reverse
and rethink their stance on uncritically adopting AI technologies. In this position piece,
we expound on why universities must take their role seriously toa) counter the technology
industry’s marketing, hype, and harm; and to b) safeguard higher education, critical
thinking, expertise, academic freedom, and scientific integrity. We include pointers to
relevant work to further inform our colleagues.

Figure 1. A cartoon set theoretic view on various terms (see Table 1) used when discussing the superset AI
(black outline, hatched background): LLMs are in orange; ANNs are in magenta; generative models are
in blue; and finally, chatbots are in green. Where these intersect, the colours reflect that, e.g. generative adversarial network (GAN) and Boltzmann machine (BM) models are in the purple subset because they are
both generative and ANNs. In the case of proprietary closed source models, e.g. OpenAI’s ChatGPT and
Apple’s Siri, we cannot verify their implementation and so academics can only make educated guesses (cf.
Dingemanse 2025). Undefined terms used above: BERT (Devlin et al. 2019); AlexNet (Krizhevsky et al.
2017); A.L.I.C.E. (Wallace 2009); ELIZA (Weizenbaum 1966); Jabberwacky (Twist 2003); linear discriminant analysis (LDA); quadratic discriminant analysis (QDA).

Table 1. Below some of the typical terminological disarray is untangled. Importantly, none of these terms
are orthogonal nor do they exclusively pick out the types of products we may wish to critique or proscribe.

Protecting the Ecosystem of Human Knowledge: Five Principles

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rogier kievit @rogierk.bsky.social · Sep 5

Very jealous following the FLUX conferences from afar - If you are attending, don't miss @jordyvanlangen.bsky.social's poster (F65) on our CODEC project later today! And of course, tomorrow morning a double act by @leacmichel.bsky.social

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rogier kievit @rogierk.bsky.social · Aug 31

It's a real pleasure to be able to work with Léa - Not just a stellar scientist, but one with a.much bigger and broader view of what academia could and should be. If you're at flux this week, don't miss her talk Saturday morning and poster S52!

Flux Society @fluxsociety.bsky.social · Aug 14

🎓 FLUX is proud to spotlight Léa Michel.

Read about her journey, motivations, and advice for other young scientists:
👉 buff.ly/zOblWtu

#FLUXSociety #TraineeSpotlight #Neuroscience #EarlyCareerResearchers

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Vincent L. Ott @vlott.bsky.social · Aug 29

New paper for anyone working with data:
Better data viz - for free, in few clicks.

Below, all N = 111, M = 0.04, SD = 0.27.
One-sided t-tests vs. 0 yield: t(110) = 1.67, p = .049.

Use raincloud plots. Or risk wrong conclusions!
Plot w/ @jaspstats.bsky.social today!

🧪 📊 #PsychSciSky #StatsSky

🧵👇

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News Eye @newseye.bsky.social · Jul 19

“a deliberate, systematic starvation of an entire population”

A statement by Doctors Against Genocide.

#Gaza

A statement by Doctors Against Genocide which reads:

To all international humanitarian organizations,
The situation in Gaza is spiraling beyond any medical or moral threshold.
The limited stock of intravenous fluids in our hospitals is no longer sufficient to treat the waves of starving individuals arriving at emergency units — from infants to the elderly, they are collapsing from pure exhaustion and hunger.
This is no longer just a humanitarian crisis.
It is a deliberate, systematic starvation of an entire population.
We urge you —
Speak. Act. Intervene.
Nasser Medical Complex

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Al Jazeera English @aljazeera.com · Jul 20

UN says starvation in Gaza is man-made as families in the besieged territory endure ‘catastrophic hunger’.

Israeli fire mows down starving Palestinians in Gaza as hunger deaths surge

UN says starvation in Gaza is man-made as families in the besieged territory endure ‘catastrophic hunger’.

bit.ly

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Stand Up for Science! @standupforscience.bsky.social · Jul 14

Over 120 mRNA cancer trials are now at risk as the Trump admin cuts funding & tells researchers to scrub “mRNA” from grant proposals.

What started as COVID fearmongering is now derailing life-saving cancer research.

Hope remains - but scientists say time is running out.

zurl.co/YBGNy

‘Tremendous uncertainty’ for cancer research as US officials target mRNA vaccines

Amid Trump cuts and state-level backlash, experts worry that progress in messenger RNA vaccines could stall

zurl.co

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rogier kievit @rogierk.bsky.social · Jul 14

'ggplothko' #aRt

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Dariia Mykhailyshyna @dariia.bsky.social · Jul 14

Just 3 days left until this workshop, so don't miss your chance to register!
Details: bit.ly/3wBeY4S
Please share!
#AcademicSky #EconSky #RStats

Dariia Mykhailyshyna @dariia.bsky.social · Jul 11

❗️Our next workshop will be on July 17th, 6 pm CEST, on Good vs. Bad Confounders: A Hands-On Introduction with DAGs & Simulations in R by @adambrosiomd.bsky.social !
Register or sponsor a student by donating to support Ukraine!
Details: bit.ly/3wBeY4S
Please share!
#AcademicSky #EconSky #RStats

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rogier kievit @rogierk.bsky.social · Jul 11

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rogier kievit @rogierk.bsky.social · Jul 9

My favourite Ebert sentence for a 1.5 star review: "Pearl Harbor is a two-hour movie squeezed into three hours". This opening paragraph should be framed.

A quoted movie review about pearl harbour '“Pearl Harbor” is a two-hour movie squeezed into three hours, about how on Dec. 7, 1941, the Japanese staged a surprise attack on an American love triangle. Its centerpiece is 40 minutes of redundant special effects, surrounded by a love story of stunning banality. The film has been directed without grace, vision, or originality, and although you may walk out quoting lines of dialog, it will not be because you admire them.'

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rogier kievit @rogierk.bsky.social · Jul 3

I thought ponies were baby horses until I was about 28. Years, not months.

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rogier kievit @rogierk.bsky.social · Jul 1

Especially when some (e.g. NPJ aging) take a month to do so!

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Margot Finn @eicathomefinn.bsky.social · Jul 1

'researchers...say that Annie Walker – a Victorian woman who began working at the observatory in 1879, when she was only 15 – ...observed thousands of stars herself....Walker was the first British professional female astronomer...paid a living wage by an observatory in the UK to chart the stars.'

Unsung observatory worker was UK’s first professional female astronomer, experts say

Cambridge’s Institute of Astronomy is trying to find a photo of Annie Walker, who died in 1940, to give her star billing

www.theguardian.com

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rogier kievit @rogierk.bsky.social · Jun 30

(and of course, it's a preprint so it matters much less, and it will find a home in a good journal. But having 'positive' and 'negative' findings published in non-overlapping journals is a great way to generate zombie findings)

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rogier kievit @rogierk.bsky.social · Jun 30

New paper by @njudd.com shows that an additional year of education doesn't causally affect telomere length in old age, despite many (theory) accounts arguing otherwise. It's been desk rejected by 13 journals happy to publish small 'positive' telomere studies. Sigh. www.biorxiv.org/content/10.1...

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Lea Michel @leacmichel.bsky.social · Jun 30

Picked up my poster for #ESCAP2025 last week and had a small surprise arriving at the Airbnb..

If you want to see my real poster on the association between adversity and grey and white matter development, come meet me at D2.102 today!

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Fleur Zeldenrust @fleurzeldenrust.bsky.social · Jun 30

www.dejongeakademie.nl/en/publicati...

Big tech is threatening our autonomy and academic freedom, don't let it!

In Control A Manifesto for a Responsible Digital Future in Higher Education - De Jonge Akademie

Publications

www.dejongeakademie.nl

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