Henrik Singmann
LightNews LightNews
banner
singmann.bsky.social
Henrik Singmann
@singmann.bsky.social
1.1K followers 1.1K following 200 posts
Associate Professor at UCL Experimental Psychology; math psych & cognitive psychology; statistical and cognitive modelling in R; German migrant worker in UK
Posts Replies Media Videos
Pinned
singmann.bsky.social
Henrik Singmann @singmann.bsky.social · Apr 27
Honey, we fixed Signal Detection Theory (SDT)! In this preprint, Constantin Meyer-Grant, David Kellen, Sam Harding, and I critically evaluate the (unequal-variance) Gaussian SDT model in recognition memory and pursue the Gumbel-min model as a principled alternative: doi.org/10.31234/osf...
🧵
Extreme-Value Signal Detection Theory for RecognitionMemory: The Parametric Road Not Taken
Signal Detection Theory has long served as a cornerstone of psychological research, particularly in recognition memory. Yet its conventional application hinges almost exclusively on the Gaussian…
doi.org
Reposted by Henrik Singmann
frank.computer
You can catch my full, open course on accessibility in visualization here:
openvisualizationacademy.org/courses/acce...
1.1 Introduction - Accessibility in Data Visualization - Open Visualization Academy
openvisualizationacademy.org
January 30, 2026 at 6:55 PM
Reposted by Henrik Singmann
philippmusfeld.bsky.social
🚨New paper altert🚨

As a synthesis of my PhD research, we revisited the prevailing assumption about the mechanisms underlying repetition learning, and re-evaluated these assumption in light of recent findings.

Now out in Perspectives on Psychological Science:
doi.org/10.1177/1745...
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
doi.org
February 3, 2026 at 6:01 PM
Reposted by Henrik Singmann
richarddmorey.bsky.social
New draft: "Decline effects, statistical artifacts, and a meta-analytic paradox". In this manuscript I show how a common practice in meta-analysis (eg the 2015 Open Science Collaboration) creates artifactual signatures of poor scientific behavior. PDF: raw.githubusercontent.com/richarddmore... 1/x
The decline effect (Protzko & Schooler, 2017) is an observed phenomenon where effect sizes in experiments apparently diminish in size from the first paper demonstrating the effect to later replications. This has been taken as a symptom of an unhealthy scientific ecosystem, possibly caused by the "winner's curse" (selection on significance and regression to the mean), publication bias or opportunistic analyses. I show that decline effects can arise as an artifact from a much simpler source: the original article determining the sign of the effect in a meta-analysis. Moreover, such artifactual decline effects will show correlations with some of the same experimental properties that one would expect from biases from poor behavior, such as the sample size of the original study.
February 2, 2026 at 2:56 PM
Reposted by Henrik Singmann
katjathieme.bsky.social
Academics vying for a spot in Epstein‘s world. There are so many. I feel the need to make a thread, so I don’t keep confusing them. 1/
January 31, 2026 at 9:02 PM
Reposted by Henrik Singmann
jeffgreene.bsky.social
I haven't read the study, but hat-tip for what I really hope is a Britney reference in the title. <chef's kiss>
Don't You Know That You're Toxic? How Influencer‐Driven Misinformation Fuels Online Toxicity
Research on misinformation has focused on message content and cognitive bias, overlooking how source type shapes toxic engagement. This study addresses that gap by showing that influencer-driven misi...
onlinelibrary.wiley.com
February 2, 2026 at 10:50 PM
Reposted by Henrik Singmann
galaxykate.bsky.social
You can test new tech ideas using the Seinfeld Test

Would the product eliminate the plot of an episode? (Google maps, cell phones, paypal, battery packs)

Good tech.

Would the product inspire new Seinfeld plots? (NFTs, AI chatbots, crypto currency, blindboxes, metaverse land sales)

Bad tech.
January 31, 2026 at 6:57 AM
Reposted by Henrik Singmann
spavel.bsky.social
Union workers solved the trolley problem, you're welcome
IWW IU 520 (Railroad Workers) PRESENTS: TROLLEY PROBLEM SOLUTION "Slip the switch" by flipping it while the trolley's front wheels have passed through, but before the back wheels do. This will cause a controlled derailment bringing the trolley to a safe halt.
January 31, 2026 at 1:45 AM
Reposted by Henrik Singmann
tadegquillien.bsky.social
Great paper giving a rational explanation for the gambler's "fallacy".
Bayesians Commit the Gambler's Fallacy
The gambler's fallacy is the tendency to expect random processes to switch more often than they actually do—for example, to assign a higher probability to heads after a streak of tails. It's often ta...
onlinelibrary.wiley.com
January 29, 2026 at 5:45 PM
Reposted by Henrik Singmann
mkarhulahti.bsky.social
First post of the year, new paper out today: we present possibly the biggest case of systematic Measurement Schmeasurement in tech use. It seems that most studies on gaming (videogame) addiction/disorder haven't measured gaming after all. This research took years, so long 🧵 doi.org/10.1098/rsos...
Confusion in gaming disorder measurement
Abstract. Measurement is important for the scientific programmes of addictive behaviours. In the present study, we investigated the measurement of gaming d
doi.org
January 28, 2026 at 9:56 AM
Reposted by Henrik Singmann
danielheck.bsky.social
New preprint by @semihaktepe.bsky.social 🎉

We compare ANOVA/SDT/GLMM for binary judgments in 20 datasets of the truth effect. #lme4

Main conclusion:
"GLMMs are a theoretically sound and practically robust method and thus superior for analyzing binary judgments in social and cognitive psychology.”
January 28, 2026 at 8:10 AM
Reposted by Henrik Singmann
anniria.bsky.social
How many versions of the Iowa Gambling Task (IGT) exist? And how much does this affect research using the IGT? More than you might think. 🧵
psyarxivbot.bsky.social PsyArXivBot @psyarxivbot.bsky.social · 20d
Methodological Flexibility in the Iowa Gambling Task Undermines Interpretability: A Meta-method Review: https://osf.io/4g3vr
January 25, 2026 at 11:16 AM
Reposted by Henrik Singmann
ositanwanevu.com
This random online comment from 2018 remains one of the last half-century's most important works of political commentary. crookedtimber.org/2018/03/21/l...
Conservatism consists of exactly one proposition, to wit: There must be in-groups whom the law protectes but does not bind, alongside out-groups whom the law binds but does not protect. There is nothing more or else to it, and there never has been, in any place or time. For millenia, conservatism had no name, because no other model of polity had ever been proposed. “The king can do no wrong.” In practice, this immunity was always extended to the king’s friends, however fungible a group they might have been. Today, we still have the king’s friends even where there is no king (dictator, etc.). Another way to look at this is that the king is a faction, rather than an individual. As the core proposition of conservatism is indefensible if stated baldly, it has always been surrounded by an elaborate backwash of pseudophilosophy, amounting over time to millions of pages. All such is axiomatically dishonest and undeserving of serious scrutiny. Today, the accelerating de-education of humanity has reached a point where the market for pseudophilosophy is vanishing; it is, as The Kids Say These Days, tl;dr . All that is left is the core proposition itself — backed up, no longer by misdirection and sophistry, but by violence.
January 24, 2026 at 5:42 PM
Reposted by Henrik Singmann
manikyaalister.bsky.social
Most popular decision-making models assume that cognitive processes are static over time. In our new paper in Psych Review, we offer a simple extension to evidence accumulation models that lets researchers account for systematic changes in parameters across time 📈

psycnet.apa.org/fulltext/202...
January 20, 2026 at 10:25 PM
Reposted by Henrik Singmann
mattansb.msbstats.info
Here it is! #rstats
January 19, 2026 at 8:50 PM
Reposted by Henrik Singmann
mattansb.msbstats.info
Too many significance tests!!

Made this little graphic for my #stats class, showing the various kinds of (N)HST and how interpreting confidence intervals can replace all of them.

Made with #rstats #ggplot (duh)
January 12, 2026 at 8:55 PM
Reposted by Henrik Singmann
stellawernicke.bsky.social
I am happy to share that our preprint “𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗖𝗶𝗿𝗰𝘂𝗹𝗮𝗿 𝗗𝗮𝘁𝗮: 𝗔 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹 𝗳𝗼𝗿 𝗖𝗼𝗴𝗻𝗶𝘁𝗶𝘃𝗲 𝗮𝗻𝗱 𝗕𝗲𝗵𝗮𝘃𝗶𝗼𝗿𝗮𝗹 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵” is now out.

Huge thanks to @bayslab.org, Julie de Falco, Zahara, @cjungerius.bsky.social, @ivntmc.bsky.social, Adam, and Xiaolu for the lovely collaboration.

doi.org/10.31234/osf...
OSF
doi.org
January 12, 2026 at 2:43 PM
Reposted by Henrik Singmann
nrennie.bsky.social
👀 New blog post! 👀

Ever made a *spaghetti* line chart and wondered how you can make it more accessible and more aesthetically pleasing at the same time? 📈

Read this blog post: nrennie.rbind.io/blog/accessi...

#DataViz #RStats
How to create a more accessible line chart – Nicola Rennie
The default settings for chart software are not guaranteed to be accessible, and often need to be adapted for your own chart. In this blog post, we’ll transform a line chart to make it more accessible...
nrennie.rbind.io
January 12, 2026 at 9:59 AM
Reposted by Henrik Singmann
daniel-barker.bsky.social
It's the 3rd of January 1939, your name is professor James Smith and you are staring at a drawing of a fish. It's not a regular fish. It is a completely impossible fish.
January 6, 2026 at 10:27 PM
singmann.bsky.social
The details of this paper post mortem are pretty shocking.
jackfitzgerald.bsky.social Jack Fitzgerald @jackfitzgerald.bsky.social · Jan 8
My Matters Arising concerning a paper on the legal determinants of terrorism is now out in @nathumbehav.nature.com. The original paper is now retracted. To learn why, read on for a story of irregularities, imputations, and impossible values. 1/x

doi.org/10.1038/s41562-025-02347-7
Client Challenge
doi.org
January 10, 2026 at 12:09 PM
singmann.bsky.social
As the new year is bringing only more of the mess of the last, I am reminded of this banger from ten years ago. Things should have been much cooler by now but instead we have tech billionaires in cahoots with increasingly right-wing governments:
www.youtube.com/watch?v=R8ca...
YACHT — I Thought The Future Would Be Cooler
YouTube video by YACHT
www.youtube.com
January 8, 2026 at 10:52 AM
Reposted by Henrik Singmann
obumbratta.com
New Year, New Colour Tool
for you data visualizers and maybe the odd designer

obumbratta.com/colour
January 7, 2026 at 4:20 PM
Reposted by Henrik Singmann
eikofried.bsky.social
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data.

If you share a single thing of my lab this year, please make it this competition.

eiko-fried.com/warn-d-machi...
WARN-D machine learning competition is live » Eiko Fried
If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...
eiko-fried.com
January 7, 2026 at 7:39 PM
Reposted by Henrik Singmann
zhugeex.com
Merry Christmas
December 24, 2025 at 9:55 PM
Reposted by Henrik Singmann
uclpals.bsky.social
How well do we really understand the human mind? This question is at the heart of UCL Beautiful Minds - a brand new eight-part season of podcasts and documentaries that dives deep into the complexities of human cognition and neurodiversity.

🎧 Listen here: uclpress.co.uk/introducing-...
December 24, 2025 at 7:00 AM