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Steve Haroz

@steveharoz.com
6.4K followers 479 following 7.3K posts

Visual perception and cognition scientist (he/him) My site: steveharoz.com R guide: r-guide.steveharoz.com StatCheck Simple: statcheck.steveharoz.com

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Steve Haroz @steveharoz.com · 21h
TL;DR Task-relevant grouping helps reduce misinterpretation for graphs journals.sagepub.com/doi/10.1177/...
journals.sagepub.com
Adjacency beats static and dynamic color in bar chart comparison - Koen Rummens, Sofie Beier, 2026
Bar charts are among the most popular graph formats when communicating quantitative information. Recent work by Boger and Franconeri (2024, Journal of Experimen...
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Steve Haroz @steveharoz.com · 23h
This looks like a genAI image. They very rarely make things clear. They're just sort of a diagram for the sake of a diagram. Like a collage with the theme of information.
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Michael Friendly @datavisfriendly.bsky.social · 30/09/2026
#TodayinHistory #dataviz #OTD 📊 🎂Sep 29, 1829 Michael George Mulhall born in Dublin, Ireland 🇮🇪 1884: 🥇1st? use of a pictogram, to represent data by icons proportional to a number The train one is accurate; the wheel one commits the area illusion, using diameter to represent the number
Capital employed in 1882  in France, UK and US, portrayed by trains whose length is ~ to the numberPictograms displaying Steam power (top) and horsepower per 1000 inhabitants by wheels whose diameter is proportional to the number representedPhoto of Michael Mulhall looking to his right and wearing a long beard
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Steve Haroz @steveharoz.com · 30/09/2026
So the whole giant story about 5 men being stopped from performing a major terrorist attack on a UK air force base involved in the US war on Iran ... is looking like just some local guys stealing petrol from nearby farm equipment. 🤡
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Sam Schwarzkopf @sampendu.bsky.social · 29/09/2026
If you can spare ~20 min on an online study on perception & #mentalimagery please consider participating: #visionscience #psychscisky #neuroskyence tstbl.co/131-782
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Anthony Moser @anthonymoser.com · 21/09/2026
as a hater let me acknowledge something ai is good at: producing irritating discourse at scale this is usually because, like "ai" itself, people are talking about different things like they are one thing so let me disentangle, with statements numbered for easy disagreement
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Brian McNoldy @bmcnoldy.bsky.social · 26/09/2026
If I search for tropical cyclones that actually came within 100 miles of New Mexico, I found 16 of them going back to 1916. The most recent was Newton in 2016. This isn't just remnants bringing rain, these are actual data points as tropical cyclones.
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Michelle Greene @mgreenephd.bsky.social · 25/09/2026
🚨New paper alert! 🚨 The visual system tunes itself to the statistics of its input. How do individual experiences differently tune vision? In this work, @bjbalas.bsky.social and I examined how one individual difference—height—changes the visual diet and how this affects perception. 1/
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Katie Mack @astrokatie.com · 24/09/2026
💯
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Leah McElrath @leahmcelrath.bsky.social · 24/09/2026
AP Stylebook warns against anthropomorphizing AI systems: “Avoid language that gives them human characteristics… Instead, explain what a system does, how well it performs, who built it and who could be affected by it.”
APStylebook @APStylebook
X.com
Artificial intelligence systems do not think, feel, want or understand. Avoid language that gives them human characteristics. This is called anthropomorphizing, when we ascribe human traits, emotions or behaviors to non-human things, such as animals or inanimate objects.
Instead, explain what a system does, how well it performs, who built it and who could be affected by it.
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Emil Hvitfeldt @emilhvitfeldt.bsky.social · 23/09/2026
I think I have cracked one of the final things that kept people in keynote over quarto revealjs slides. Introducing ✨️ quarto-revealjs-magic-move ✨️ emilhvitfeldt.com/post/quarto-... #quarto #slidecrafting
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Dan Quintana @dsquintana.bsky.social · 19/09/2026
New preprint! 🎉 I analysed 1660 papers from 4 psychology journals and found materials sharing went from 9% of papers in 2015 to 82% in 2025, and these materials *do* get downloaded — a median of 135 times each. BUT shared code is often hard to run. doi.org/10.31234/osf... Let's walk through it 🧵
Two-panel figure. Panel a is a flow diagram tracking 1,611 empirical psychology articles from publication year (545 in 2015, 552 in 2020, 514 in 2025) to repository-link type: 785 link an OSF project, 85 link another platform, and 741 link no repository. Of those with an OSF link, download counts were retrieved for 670 and not retrieved for 115. Panel b is a line chart of the share of empirical papers linking OSF across 2015, 2020 and 2025. The overall rate, shown as a dashed black line, rises from 9% to 57% to 82%. All four journals rise steeply and end close together: Psychological Science 92%, JESP 89%, JML 83%, Cognition 76%, with Psychological Science highest throughout.Three-panel figure. Panel a: ridgeline plot of downloads per file by material type on a log scale, with the percentage never downloaded labelled for each — archive 16% of 545 files, documents 20% of 2,970, code 12% of 3,471, other 17% of 1,646, data 21% of 10,051, media 35% of 2,120, images 35% of 4,102. Most files cluster between 1 and 10 downloads, with long right tails past 100. Panel b: ridgeline plot of downloads per paper by journal, log scale, with dashed median lines; Psychological Science is highest, then JESP, JML and Cognition. Panel c: stacked bars showing, for documents, data and code separately, the share of papers by download band (0, 1–10, 11–100, more than 100) in 2015, 2020 and 2025. The share exceeding 100 downloads falls sharply over time in all three types, from roughly two-thirds in 2015 to a quarter or less in 2025, as the 1–10 band grows.Four-panel figure. Panel a: statistical languages detected among 333 papers with retrievable code — R 88%, SPSS 12%, Stata 4%, SAS 1%. Panel b: code red flags among those 333 papers — 34% hard-code an absolute path, 40% reference a missing file — above documentation among 672 OSF-linked papers — 21% have a README, 30% are documented by README, description or wiki. Panel c: among 562 Elsevier papers with no repository link, 44% (245) host at least one journal supplementary file but only 14% (77) host data, code or an archive. Panel d: composition of those 448 hosted files — documents 52%, data 21%, media 9%, other 7%, archive 6%, code 3%, images 1%. The code panels are green, the journal-supplement panels blue.Coefficient plot (download predictors)

Dot-and-whisker plot of three standardised predictors of OSF download volume, each with a 95% confidence interval. Repository size (number of files) has the largest effect at about 0.76, citations about 0.38, and altmetric attention about 0.12. All three intervals sit entirely above zero, so each predicts more downloads, with repository size roughly twice the effect of citations and six times that of attention. X-axis: standardised effect, −0.2 to 1.0.
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Steve Haroz @steveharoz.com · 18/09/2026
I've done something similar for visualization purposes. But yeah, row-base tie-breaking is never OK for any statistical purpose.
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Steve Haroz @steveharoz.com · 18/09/2026
Amazing edshee.run
edshee.run
ed Sheerun
An 8-bit infinite runner. He can outrun almost anything except one question. A parody.
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Steve Haroz @steveharoz.com · 17/09/2026
Many people are disappointed with the current state of technology, but the "popcorn" button on modern microwaves does actually work now.
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Jon Harmon (he/him/his) @jonthegeek.com · 16/09/2026
I made it through my #PositConf2026 talk! The Design of Everyday #RStats Functions. Slides here: stbl.wrangle.zone/slides/every... The underlying 📦 {stbl} is on CRAN!
stbl.wrangle.zone
The Design of Everyday R Functions
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Steve Haroz @steveharoz.com · 16/09/2026
Negligence and mistakes concern me far more than fraud.
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Steve Haroz @steveharoz.com · 16/09/2026
There is a spectrum of error culpability from typo to programming mistake to results-aware decision-making to negligent experiment/anslysis design. Fraud is the most extreme and could be the least common source of error.
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Steve Haroz @steveharoz.com · 15/09/2026
I need everyone in marketing and branding to understand that no one gives a shit about their corporate updates. This is the actual title of an email I got today.
GFiber is now gFiber
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Steve Haroz @steveharoz.com · 15/09/2026
Have you tried topping up an existing gift card?
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Steve Haroz @steveharoz.com · 15/09/2026
Oh, nevermind. Looks like many sites have minimum amounts for a gift card.
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Steve Haroz @steveharoz.com · 15/09/2026
Buy a gift card for the exact amount on a site where you'll spend money anyway.
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samuel mehr @mehr.nz · 15/05/2026
annals of book research, part one no amount of prior experience in child development can prepare you for this insane 1998 bill from the State of Florida, which REQUIRES state-funded daycares to PLAY CLASSICAL MUSIC TO INFANTS because they have ONE HUNDRED BILLION BRAIN CELLS
Florida Senate - 1998 SB 660
 By Senator Turner
 36-628-98
 1 A bill to be entitled
 2 An act relating to education; providing that
 3 state-funded education and care programs for
 4 infants and toddlers must foster brain
 5 development; requiring an evaluation and a
 6 report; providing an effective date.
 7
 8 WHEREAS, at birth, a child has one hundred billion
 9 brain cells that will be developed by the experiences of life,
10 and
11 WHEREAS, the stimulation that causes brain development
12 can be positive, such as conversation, music, and parental
13 love, or it can be negative, such as neglect or emotional and
14 physical abuse, and
15 WHEREAS, during the first year of a child's life the
16 connections between the cells, the synapses, increase
17 twenty-fold, making the first year a crucial time for brain
18 development, and
19 WHEREAS, infants develop synapses when they listen to
20 language and music, see colors and shapes, and feel and handle
21 objects of different sizes, shapes, and textures, and
22 WHEREAS, there is no other time in a child's life as
23 productive for brain development as the first year, NOW
24 THEREFORE,Be It Enacted by the Legislature of the State of Florida:
27
28 Section 1. Each state-funded education and care
29 program for children from birth to 5 years of age must provide
30 activities to foster brain development in infants and
31 toddlers. A program must provide an environment rich in
 1
CODING:Words stricken are deletions; words underlined are additions.
 Florida Senate - 1998 SB 660
 36-628-98
 1 language and music and filled with objects of various colors,
 2 shapes, textures, and sizes to stimulate visual, tactile,
 3 auditory, and linguistic senses in the children and must
 4 include classical music and at least 30 minutes of reading to
 5 the children each day. A program may be offered through an
 6 existing early childhood program such as Healthy Start, the
 7 Title I program, subsidized child care, the prekindergarten
 8 early-intervention program, Florida First Start, the Head
 9 Start program, or a private childcare program. A program must
10 provide training for the infants' and toddlers' parents
11 including direct dialogue and interaction between teachers and
12 parents demonstrating the urgency of brain development in the
13 first year of a child's life.
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Matthew B. Jané @matthewbjane.bsky.social · 13/09/2026
I’ve been quiet on social media lately, but today I’m launching Audit Clinical Evidence (ACE), an initiative I’ve been developing over the past year. Take a look: AuditClinicalEvidence.org
auditclinicalevidence.org
ACE
Independent audits of published clinical research for statistical errors, data inconsistencies, and research integrity violations.
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Steve Haroz @steveharoz.com · 12/09/2026
My version: 1. Reply to post 2. See their reply to my reply 3. Like their reply. 4. Upon seeing the thread, realize I didn't like the first post and hurriedly like it to not seem rude.
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Solomon Kurz @solomonkurz.bsky.social · 04/07/2026
At a basic level, I think this depends on what you care about. If you want quick pubs for a grade or a promotion, just do t-tests. If you are interested in your data, learn how to fit and interpret ordinal models.
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ElieNYC @elienyc.bsky.social · 11/09/2026
Newsletter is up. I hate this day. For its sadness. And for the horrible decisions we made afterwards www.thenation.com/article/poli...
thenation.com
The US Had a Choice After 9/11. It Chose Wrong.
In this week’s Elie v. U.S., our justice correspondent reflects on September 11. Plus: the stupidity of the "Trump Dividend" and the threat of AI.
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Icelandic Vision Lab @icevislab.bsky.social · 10/04/2026
🚨Preprint Alert🚨and Thread 🧵 The Visual Imagery Visually Anchored Scale (VIVAS) reveals dissociable perceptual dimensions and category-specific structure: osf.io/preprints/ps... Authors: @heidasigurdar.bsky.social, Árnason, Mäekalle, Vésteinsdóttir, @arnig.bsky.social 1/9
Photo of an eye by Beel coor on Unsplash: https://unsplash.com/photos/brown-and-black-eye-illustration-1AIHIjtuNCI
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Steve Haroz @steveharoz.com · 10/09/2026
I wrote this specifically for filling in some programming gaps I found that people had with #RStats. I hope it's useful. r-guide.steveharoz.com
r-guide.steveharoz.com
A Succinct Intro to R
<p>This book is a short introduction to the R language. It covers the basics of R and is intended as a prequal to analysis and visualization guides like “R for Data Science”. This guide assumes you ar...
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Timnit Gebru @timnitgebru.blacksky.app · 13/08/2026
🔇 🔇 🔇 My book, Deep Unlearning, is now available for preorders! I don't know how people write so many books because this one took a lot out of me. It turns out, I had a lot to say 😂, with editors cutting out 50k of my words 🫣 ✴️ You can now preorder it at www.simonandschuster.com/books/Deep-U....
Cover of my new book, Deep Unlearning: The Rise of AI and The Radicalization of a Tech Idealist. 

There are two concentric circles in the book, the left being circuits in black an white, and the right being a bunch of dots with orange accents. The cover background is cream. And the words are written in black except for "Un" which is in orange.
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Steve Haroz @steveharoz.com · 09/09/2026
Another example: "while the p-value was way above 0.05, we found that..."
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Steve Haroz @steveharoz.com · 09/09/2026
It's a type of bullshit I call "acknowledge but ignore". This is the kind of phrasing used when someone wants to acknowledge that they only have non-directional correlation data but also ignore that limitation and jump just straight to a specific causal story.
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Giles Wilkes @gilesyb.bsky.social · 09/09/2026
It's always the way, isn't it giftarticle.ft.com/giftarticle/...
Graph shows far right support higher where the number of foreign nationals is lowest
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Derek Arnold @visnerd.bsky.social · 08/09/2026
A recent paper argued that there is no visual binding problem. I disagree, and wrote a response... journals.sagepub.com/doi/10.1177/... Related demonstrations can be found here... staff.psy.uq.edu.au/~uqdarnol/JS...
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Steve Haroz @steveharoz.com · 06/09/2026
Can't stand olives. But I generally don't like fermented or vinegary foods. I wonder if introduction to vinegar in food at a age impacts preference for/against it.
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Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 04/09/2026
It's a systemic problem in science reporting that these summaries exaggerate the evidence. In the actual candy study, the participants were all students, status was manipulated in the lab by telling some students they were better than others, and "nearly twice" means 1 piece vs 2 pieces.
Piff and his colleagues found that upper-class drivers were more likely to cut other cars off at junctions and ignore pedestrians at crossings. Wealthier people also appeared more willing to lie at work. In one experiment, volunteers were left alone with a jar of sweets ostensibly meant for children. When the researchers returned, upper-class people had snaffled nearly twice as many candies as lower-class people.
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Steve Haroz @steveharoz.com · 05/09/2026
I've had a sudden uptick in this too, mostly via LinkedIn. And the messages all seem like an LLM wrote them. I block and move on, but it's very annoying.
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Steve Haroz @steveharoz.com · 03/09/2026
I sort of agree. Ideally, you try to design an experiment so that any outcome is informative. But sometimes, the outcome is just too noisy to say anything. And that's case where you haven't produced knowledge (or at least, you produced far less knowledge than you hoped).
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Steve Haroz @steveharoz.com · 03/09/2026
Yeah, I agree!
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Steve Haroz @steveharoz.com · 03/09/2026
100%. But then there are the cases where the data is too noisy to draw any conclusion, or you have floor/ceiling effects, or you realize too late that you screwed up the the code in the experiment, etc.
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Steve Haroz @steveharoz.com · 03/09/2026
"This critical issue is explained by one easily visualized casue" is very easy to communicate and appreciate. VS "This issue is weakly impacted by an interaction of 3 different variables, but there are probably other variables we don't know about, and some of the causality might be reversed." Ugh!
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Steve Haroz @steveharoz.com · 03/09/2026
Every time manipulated or fabricated data is discovered, I think of all the studies I ran that could have told an incredibly compelling story if only the results were different. It's also why I've grown skeptical of people described as good "storytellers".
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Steve Haroz @steveharoz.com · 03/09/2026
Ugh! I've encountered exactly this so many times! People have sworn they only want exploratory descriptive results and used that as the excuse for running a poorly thought-out underpowered study, and then they ask "is this difference statistically significant?".
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Steve Haroz @steveharoz.com · 03/09/2026
Haha, I feel exactly the opposite: open-ended registrations are way more useful. But the (fixable) reason is that forms don't allow rich text and images, making it difficult to explain visual stimuli. I guess that's difficulty of making a platform for all fields. Example: osf.io/vhgdn/files/...
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Steve Haroz @steveharoz.com · 03/09/2026
Fair point. That's where things differ between fields, as non-medical fields don't have the same standardized terminology that would make search valuable. In cognition and perception, I never found the OSF searching to be useful, as it missed critical things and turned up lots of false positives.
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Steve Haroz @steveharoz.com · 03/09/2026
I defined that criteria as having a unique ID and being searchable by author/project name rather than all content and metadata being searchable. The scenario I set up was: if an author registered multiple possible plans and deleted all but one, would there be some evidence of the deletion?
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Steve Haroz @steveharoz.com · 03/09/2026
This comparison may help differentiate various platforms. osf.io/preprints/me...
Table of preregistration features
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Steve Haroz @steveharoz.com · 02/09/2026
Update: Looks like it's now retracted! Well done @simine.com and the psych science editorial board! bsky.app/profile/simi...
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Steve Haroz @steveharoz.com · 02/09/2026
And before anyone chimes in about personal/identifiable data needing protection, the vast majority of times I've seen that excuse, it was inappropriate. Either the collected PII wasn't relevant to the study, it could have been anonymized, or it was only necessary for a small subset of results.
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