What’s a multiverse good for anyway?
Julia M. Rohrer, Jessica Hullman, and Andrew Gelman
Multiverse analysis has become a fairly popular approach, as indicated by the present special issue on the matter. Here, we take one step back and ask why one would conduct a multiverse analysis in the first place. We discuss various ways in which a multiverse may be employed – as a tool for reflection and critique, as a persuasive tool, as a serious inferential tool – as well as potential problems that arise depending on the specific purpose. For example, it fails as a persuasive tool when researchers disagree about which variations should be included in the analysis, and it fails as a serious inferential tool when the included analyses do not target a coherent estimand. Then, we take yet another step back and ask what the multiverse discourse has been good for and whether any broader lessons can be drawn. Ultimately, we conclude that the multiverse does remain a valuable tool; however, we urge against taking it too seriously.
New preprint! So, what's a multiverse analysis good for anyway?>
With @jessicahullman.bsky.social and @statmodeling.bsky.social
juliarohrer.com/wp-content/u...
04.02.2026 10:24 — 👍 172 🔁 52 💬 9 📌 3
Nine subcortical/cerebellar atlases included in the subcortex_visualization Python package (and subcortexVisualizationR package in R). The atlases are depicted in two-dimensional vector graphic format.
The extended version of my thesis procrastination project/subcortex visualization package is out now in both Python and R, now that I’ve graduated 🤠 This figure shows the 9 atlases included (and counting)!
Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...
27.01.2026 03:04 — 👍 111 🔁 46 💬 3 📌 5
A wintery scene of a small angel made of snow with a church in the backyard
A snowy canal with a watery sunrise
Utrecht in snowy weather
05.01.2026 10:28 — 👍 48 🔁 2 💬 0 📌 1
I've used Lavaan almost every (work)day for 15 years, but this open source labour of love has never received proper institutional support. I'm delighted to be a small part of an 1.5M OpenScienceNL award, led by Jorgensen, to completely revamp and futureproof Lavaan www.openscience.nl/en/news/45-p...
18.12.2025 07:43 — 👍 267 🔁 62 💬 10 📌 6
Our paper on the ☀️ "summer slide" 🛝 is out now @pnas.org!
www.pnas.org/doi/10.1073/...
Summer slide is a replicable phenomenon across diverse datasets that's more than "forgetting" school material in vacation months, but effects of socioeconomic inequality are ➡️ 7x bigger! ⬅️
#PsychSciSky #DevPsy
🧵👇
16.12.2025 17:56 — 👍 124 🔁 51 💬 2 📌 6
Postdoctoral Researcher (2288) - Birkbeck, University of London
Birkbeck
🚀 We're hiring !
🕵️ Seeking a postdoc to study the development & individual-level organization of brain circuits supporting (in)flexible behavior in psychiatric populations.
🧠 Precision functional mapping, fMRI, normative modelling
Details 👉 tinyurl.com/3h8tcv2e
🗓️ Apply by Dec 10! Please RT 🙌
06.11.2025 10:56 — 👍 35 🔁 28 💬 1 📌 2
The "smartphones/social media" discourse suffers from some amazing historical amnesia. There was no 2008 financial crisis and no global pandemic starting in 2020, it's all SCREENS SCREENS SCREENS. Major world events? Just the backdrop against which SCREENS happened.
15.12.2025 07:05 — 👍 262 🔁 57 💬 16 📌 3
An abbreviation (ABB) in a journal article (JA) or Grant Application (GA) is rarely worth the words it saves. Every ABB requires cognitive resources (CR) and at my age by the time I'm halfway through a JA or GA I no longer have the CR to remember what your ABB stood for.
15.08.2025 09:39 — 👍 402 🔁 123 💬 12 📌 22
📚 What does "modern" #EducationResearch look like today?
@radboudumc.bsky.social's Rogier Kievit shares how the #LEVANTE initiative embodies a unique approach to human #CognitiveDevelopment—one that is both truly global & collaborative to its core.
Learn more 🔗 bit.ly/48CmPmU
#LearningVariability
26.11.2025 10:36 — 👍 1 🔁 2 💬 0 📌 0
don't forget the Bicycle of Education
27.11.2025 08:02 — 👍 2 🔁 0 💬 0 📌 0
Congratulations Dave on steering AMPPS so successfully over the last few years, and teaching me and my fellow AE's a lot about the value of responsible, diligent and clear EIC leadership
27.11.2025 07:50 — 👍 4 🔁 0 💬 0 📌 0
Good news straight from my IG feed:
"When asked to draw a scientist, school-age kids in the United States are increasingly sketching women, according to a study from 2018." (sciencemagazine)
Original article: srcd.onlinelibrary.wiley.com/doi/full/10....
24.11.2025 16:32 — 👍 9 🔁 3 💬 0 📌 0
Andrew R. A. Conway
Michael J. Kane
PS is excited to announce the launch of "Individual Differences in Cognition” (IDIC), an open-access journal on research in cognitive psychology, science, and neuroscience. Co-Editors-in-Chief are Andrew R.A. Conway & Michael J. Kane. Manuscripts accepted this spring. More information coming soon!
22.11.2025 22:09 — 👍 80 🔁 40 💬 0 📌 2
What does it mean to be both animal and thinker? Join @moatazassem.bsky.social and John Duncan on 25 November at Murray Edwards College for the launch of John’s new book ‘The Animal and the Thinker.’ Get your tickets here: www.eventbrite.co.uk/e/the-animal...
22.10.2025 10:04 — 👍 8 🔁 2 💬 0 📌 3
Beautifully written, funny, and important. Also ouch.
17.11.2025 19:01 — 👍 4 🔁 1 💬 0 📌 0
14.11.2025 21:16 — 👍 3 🔁 1 💬 1 📌 2
BREAKING: European Sleeper will start a Paris-Berlin sleeper train from 26 March 2026, after Nightjet pulls out in December.
It'll run via Brussels (with Eurostar connection from London) 3 times a week. This + existing train = Brussels-Berlin 6 times a week. www.europeansleeper.eu/paris
12.11.2025 07:16 — 👍 391 🔁 100 💬 7 📌 9
Very proud to have launched our manifesto and report to make Dutch academia more sustainable - a moment to celebrate after two years of hard work with the Green Young Academy, DJA and many inspiring colleagues
dejongeakademie.nl/en/news/3148...
05.11.2025 19:29 — 👍 24 🔁 7 💬 0 📌 0
Harvard Gazette:
Gazette: “You are the mother of two In ten years you have produced three novels and two short-story collections. Can you talk about your process and how you manage work and family?”
Groff: “I understand that this is a question of vital importance to a lot of people, particularly to other mothers who are artists trying to get their work done, and know that I feel for everyone in the struggle. But until I see a male writer asked that question, I am going to respectfully decline to answer it.”
05.11.2025 00:18 — 👍 2697 🔁 776 💬 29 📌 56
Universities should be more ambitious in the climate transition, according to The Young Academy - De Jonge Akademie
News
You can read both the manifesto and the report here: www.dejongeakademie.nl/en/news/3148... and some coverage in e.g. the @foliacivitatis.bsky.social here www.folia.nl/en/actueel/1...
04.11.2025 14:49 — 👍 6 🔁 3 💬 1 📌 0
Universities should be more ambitious in the climate transition, according to The Young Academy - De Jonge Akademie
News
Proud to share our manifesto - with a vision and concrete steps towards just sustainability transitions in Dutch academia!
With @rogierk.bsky.social, De Jonge Akademie, Green Young Academy
www.dejongeakademie.nl/en/news/3148...
04.11.2025 11:43 — 👍 12 🔁 4 💬 0 📌 0
I have a vivid but possibly made up memory of paper(s) showing that dual task interference is greater if the same task is done under high time constraints vs low/no time constraints. Any pointers come to mind?
20.10.2025 06:59 — 👍 2 🔁 1 💬 0 📌 0
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
01.10.2025 10:22 — 👍 24 🔁 7 💬 1 📌 0
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!)
30.09.2025 13:29 — 👍 5 🔁 2 💬 0 📌 0
Research on Communication: Voice, Face, Dyslexia, Prosopagnosia, Thalamus, Multisensory | Chair of Cognitive and Clinical Neuroscience @TU Dresden | Vice-Dean Faculty of Psychology | More info on: https://tu-dresden.de/mn/psychologie/ifap/kknw?set_langua
Postdoc in the Adaptive Dynamical Systems group led by @macshine.bsky.social at The University of Sydney 🧠
I'm probs either biking, hammocking, and/or caffeinating rn ☀️🌻
cognitive neuroscientist at CEA/NeuroSpin, Paris-Saclay
cognitive neuroscientist, interested in human timing & time perception, neural oscillations, mother², she/her
brainthemind.com
We investigate temporal cognition and conceptual spaces.
Part of @unicog.bsky.social @inserm.fr @cea.fr @univparissaclay.bsky.social.
Team leader: @virginievanw.bsky.social
PI: @herbstso.bsky.social, @vigano.bsky.social
https://brainthemind.com/about/
Interested in how & what the brain computes. Professor in Neuroscience & Statistics UC Berkeley
Academic Research Fellow, University of Melbourne
Number, space, time, 7T fMRI
https://mathsatthehumanscale.github.io/
Psychologist studying human reaction times ( #MentalChronometry) with mathematical models of cognition & electrophysiology ( #EEG, #EMG, #MEG), fanboy of Franciscus Donders.
Postdoc (he/him) @ the Université de Lausanne, Switzerland
Infectious disease epidemiologist and research assistant professor at the University of Michigan @icpsr.bsky.social. Cat dad, data nerd, and Cincinnati sports fan. he/him
Assistant Prof/Lecturer, Psychology in Education, University of York, England
Medical doctor and epidemiologist working in occupational epidemiology @utrechtuniversity.bsky.social. Member of the Scientific and Medical Advisory Board @openrxiv.bsky.social and affiliate volunteer @medrxivpreprint.bsky.social
Likes horses & books. And cats and dogs
Eye-tracking, Pupillometry, Word nerd, Learning and Memory, Language, R, Stats, Quant, Director Human Neuroscience Lab @bostoncollege www.drjasongeller.com
Sociologist, researcher, member @denktankminerva.be & @brispo-vub.bsky.social: labour relations, quality of work & open source data analysis.
Senior lecturer at the Department of Multilingualism at https://unifr.ch/. Master's student statistics at https://unibe.ch/. Saxophonist with https://beatmoustache.ch/. Aficionado of Danish ska.
Blog & website: https://janhove.github.io
Reader (Associate Professor) - Birkbeck, University of London
Leading the Vaghi Lab (https://www.vaghilab.org/)
Methods Nerd │ PCI RR Recommender
Dev Cog Neuroscience │Disability Research
Assist Prof
Open Science Coach
Linköping University 🇸🇪
Views my own
Research Associate at the University of Cambridge (she/her)
Development, networks, machine learning… things like that🧠
Cognition and Brain Imaging Laboratory | Institute of Science and Technology for Brain-inspired Intelligence | Fudan University | Shanghai
Cognitive neuroscientist | PI @ COGNIZELab | Prof @ ISTBI, Fudan, Shanghai | Exploring memory encoding, Default Mode Network and mental navigation with 7T fMRI @cognizelab.bsky.social