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James Bartlett

@bartlettje.bsky.social
1K followers 552 following 307 posts

Psychology lecturer at UoG 🏴󠁧󠁢󠁳󠁣󠁴󠁿 All things data skills, statistics, quant research methods, and HE pedagogy. #rstats 🗣️🇬🇧🇩🇪

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James Bartlett @bartlettje.bsky.social · 06/10/2026
Very happy to see this over the line with @dhruvaggarwal.bsky.social. We had such a positive experience with the journal. It really has set a high standard for what a community led journal can achieve.
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James Bartlett @bartlettje.bsky.social · 25/09/2026
After a refresher of wrangling and visualisation, most of the content is dedicated to traditional tests such as t-tests, ANOVA, and OLS regression. One of the neat features of this book and accompanying labs is the focus on pair programming, which is such an effective way of problem solving.
lnkd.in
LinkedIn
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James Bartlett @bartlettje.bsky.social · 25/09/2026
In the second instalment of our @psyteachr.bsky.social refresh, we have Gaby Mahrholz who leads second year undergraduate psychology. We are still talking big numbers - around 300 students - and they start working on inferential statistics using the Analysis book: psyteachr.github.io/analysis-v4/
lnkd.in
LinkedIn
This link will take you to a page that’s not on LinkedIn
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James Bartlett @bartlettje.bsky.social · 24/09/2026
The aim of this first year is to get everyone up to speed with core psychology content. For research methods, there are pretty much no inferential statistics, it is grounding their understanding of working with data.
psyteachr.github.io
PsyTeachR
Psychologists from @UofGPsychNeuro advocating open, reproducible methods teaching.
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James Bartlett @bartlettje.bsky.social · 24/09/2026
We're in the first week of term and several of our @psyteachr.bsky.social books have had a little refresh. Matthew Checketts leads first year undergraduate psychology. Around 600 students develop wrangling and visualisation skills using the Data Skills book: psyteachr.github.io/data-skills-...
psyteachr.github.io
PsyTeachR
Psychologists from @UofGPsychNeuro advocating open, reproducible methods teaching.
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James Bartlett @bartlettje.bsky.social · 12/08/2026
We're genuinely interested in people's feedback before we submit somewhere. You can find the paper here, but it's a bit of a unit, so I've created a condensed overview with the feedback we're particularly interested in.
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James Bartlett @bartlettje.bsky.social · 12/08/2026
3. Expose students to statistically significant and non-significant examples, and teach them how to appropriately interpret the results.
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James Bartlett @bartlettje.bsky.social · 12/08/2026
We have three teaching implications: 1. Teach data wrangling as part of research methods and provide students with repeated scaffolded practice opportunities. 2. Choose the software and resources based on the skillset you want to develop and whether students can access them after graduation.
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James Bartlett @bartlettje.bsky.social · 12/08/2026
Students struggled more with the unprocessed data, but the qualitative reflections were the most interesting. They found overcoming analysis challenges satisfying, but highlighted key difficulties in being able to wrangle data without prescriptive instructions and selecting a statistical test.
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James Bartlett @bartlettje.bsky.social · 12/08/2026
We have a new pre-print, which I am very excited about! We report an exploratory mixed methods study to see how students would find wrangling realistic data as part of the analysis process. osf.io/preprints/ps...
osf.io
OSF
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Our World in Data @ourworldindata.org · 25/07/2026
Three-quarters of eggs produced in the United Kingdom are free-range— Growing up in the United Kingdom in the 1990s and early 2000s, almost all the eggs in our supermarket came from battery hens, those raised in small wire enclosures.
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James Bartlett @bartlettje.bsky.social · 25/07/2026
Saying it’s wrong isn’t very effective, the idea is providing alternative explanations that fill in the gaps. In this study, we used a caveat statement to add the correction. This is a good source for different debunking techniques: climatecommunication.gmu.edu/all/the-debu...
climatecommunication.gmu.edu
The Debunking Handbook 2020 - Center for Climate Change Communication
The Debunking Handbook 2020 summarizes the current state of the science of misinformation and its debunking. It was written by a team of 22 prominent scholars of misinformation and its debunking, and ...
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James Bartlett @bartlettje.bsky.social · 24/07/2026
And comparing estimates from our logistic regression models to potentially better capture the data generating process.
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James Bartlett @bartlettje.bsky.social · 24/07/2026
Showing how the delta estimates compare across studies.
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James Bartlett @bartlettje.bsky.social · 24/07/2026
A violin-boxplot visualising the distributions side by side when the original study did not include any visualisation.
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James Bartlett @bartlettje.bsky.social · 24/07/2026
It was refreshing coming at this from how well the original study was reported. We demonstrated it was computationally reproducible, we replicated the primary outcomes, and showed it was robust to alternative modelling choices.
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James Bartlett @bartlettje.bsky.social · 24/07/2026
New pre-print and it's not about teaching for once! 🚨 We report a direct replication of Irving et al. (2022) who showed debunking statements can decrease mistaken causal inferences when reading a news article. osf.io/preprints/ps...
osf.io
OSF
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James Bartlett @bartlettje.bsky.social · 15/07/2026
Really nice to see this published! I was one of the peer reviewers and it's so refreshing to see some nicely done SoTL research. I'm the kind of reviewer who checks the data and code for reproducibility and everything was pristine. journals.sagepub.com/doi/10.1177/...
journals.sagepub.com
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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Julia M. Rohrer @dingdingpeng.the100.ci · 15/07/2026
I am delighted that the opening segment of the latest episode of Very Bad Wizard features the workhorse of insightful social sciences in the 21st century: Latent Profile Analysis. Applied to boobs vs. ass, and also egalitarian values and materialism. verybadwizards.com/episode/epis...
Buttocks or Breasts? Identifying Latent Subgroups in Male Preferences for Female Bodily Features

Mehmet Mehmetoglu

Among the various physical traits that serve as secondary sexual characteristics, breasts and buttocks are visually conspicuous cues used in male mate evaluation because they signal youth, fertility, developmental stability, and nutritional status. Although these features have been extensively studied, less is known about the extent to which men differ in the relative importance they place on each trait. Latent Profile Analysis (LPA) identified distinct subgroups of Norwegian men (N = 395) based on how much importance they placed on breasts and buttocks in their evaluations of romantic partners. A four-class solution emerged, comprising Highly Body-Oriented (53%), Moderately Body-Oriented (20%), Buttocks-Oriented (18%), and Body-Unoriented (9%) subgroups. Predictors such as egalitarianism, materialism, and preferences for sexiness were, as expected, significantly associated with class membership, providing support for the validity of the typology. Notably, a consistent buttocks-oriented class emerged across all LPA solutions, whereas no distinct breasts-oriented group was found, as ratings of breasts persistently co-occurred with high ratings of buttocks, suggesting that breasts do not function as a primary preference in isolation. These findings reveal that buttocks may occupy a more central and stable role than breasts in male mate preferences, offering novel insights into the structure of physical attraction and heterogeneity in the male mating mind.
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Daniel Lakens @lakens.bsky.social · 15/07/2026
We are hiring an assistant professor in Metascience! Join our lovely department of Human-Technology Interaction, with a very active Metascience group, at Eindhoven University of Technology. Apply here before August 14, or share the vacancy in your network! www.tue.nl/en/working-a...
tue.nl
Assistant Professor in Metascience
Personal type: Scientific staff
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James Bartlett @bartlettje.bsky.social · 02/07/2026
Like a reading list of what books/papers you’d recommend to get started learning more about causal inference. This is great though and I should definitely reread your primer.
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James Bartlett @bartlettje.bsky.social · 02/07/2026
I keep discussing this with one of my colleagues, so do you have a starter set for this? I know you have a paper on it, but have you made a course or reading list somewhere?
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James Bartlett @bartlettje.bsky.social · 19/06/2026
Such a joy to contribute to this 💪
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Rich Ramsey @richramseyphd.bsky.social · 11/06/2026
For folks who regularly preregister their research, I put together a Quarto preregistration template that renders to PDF via Typst. It closely follows the original template by @bartlettje.bsky.social. #OpenScience #Rstats github.com/rich-ramsey/...
github.com
GitHub - rich-ramsey/prereg-template: A minimal Quarto template for writing preregistrations, rendered to PDF via Typst.
A minimal Quarto template for writing preregistrations, rendered to PDF via Typst. - rich-ramsey/prereg-template
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James Bartlett @bartlettje.bsky.social · 11/06/2026
Nice! I’ll have to check it out. I’ve not actually got around to using Typst yet…
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James Bartlett @bartlettje.bsky.social · 05/06/2026
Always an excellent series of topics and speakers!
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James Bartlett @bartlettje.bsky.social · 07/05/2026
Standardised mean difference from here to the moon? 😅
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James Bartlett @bartlettje.bsky.social · 07/05/2026
This article will also live with me forever as the best origin story. We wrote it during the Open Science Retreat 2025 in Beatenburg, Switzerland. As well as being productive, we also got to experience four seasons in possibly my favourite country.
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James Bartlett @bartlettje.bsky.social · 07/05/2026
We provide practical advice for how you can embed open/reproducible science assessments throughout the curriculum to target different stages of a student's skill development. We use examples from our degrees (you can find assessment briefs in our OSF project) and combine with published examples.
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James Bartlett @bartlettje.bsky.social · 07/05/2026
🚨 New article klaxon 🚨 Gaby Mahrholz, @emilynordmann.bsky.social and I have our article "Practice What You Preach: Designing Student Assignments That Advance Open and Reproducible Science" published in AMPPS. doi.org/10.1177/2515...
doi.org
Practice What You Preach: Designing Student Assignments That Advance Open and Reproducible Science - James Bartlett, Gaby Mahrholz, Emily Nordmann, 2026
Since the replication crisis came to widespread attention in psychology, there has been significant progress in reforming research practices to be more open and...
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James Bartlett @bartlettje.bsky.social · 30/04/2026
One reviewer provided really thoughtful feedback that massively improved the last couple of revisions, but the other provided insultingly poor feedback I would be embarrassed to give out myself.
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James Bartlett @bartlettje.bsky.social · 30/04/2026
After a year and a half and three revisions, this was rejected: osf.io/preprints/os.... I can take rejection but the experience with Teaching Statistics has been truly the most frustrating journal processes I've ever experienced.
osf.io
OSF
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Julia M. Rohrer @dingdingpeng.the100.ci · 22/04/2026
Good news everyone 🥳 Our (w @vincentab.bsky.social) primer on models as prediction machines (with the marginaleffects package) is finally officially published!> journals.sagepub.com/doi/10.1177/...
journals.sagepub.com
Models as Prediction Machines: How to Convert Confusing Coefficients Into Clear Quantities - Julia M. Rohrer, Vincent Arel-Bundock, 2026
Psychological researchers usually make sense of regression models by interpreting coefficient estimates directly. This works well enough for simple linear model...
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Ian Hussey @ianhussey.mmmdata.io · 18/04/2026
I’m hiring a PhD student! The candidate will work alongside @zefreeman.bsky.social, who is joining our research group as postdoc. jobs.unibe.ch/job-vacancie...
jobs.unibe.ch
PhD Student in Meta-Science and Clinical Psychology - Universität Bern
Universität Bern is looking for PhD Student in Meta-Science and Clinical Psychology
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James Bartlett @bartlettje.bsky.social · 27/03/2026
The absolute beautify of social media. So many useful resources and ideas, including discovering the ‘sample_prior = “only”’ argument in brms!
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James Bartlett @bartlettje.bsky.social · 27/03/2026
Yeah, I'm looking for the opposite! My course has quite a short introduction to Bayesian modelling, so I think I will end up writing some materials on getting people used to thinking about / setting priors.
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James Bartlett @bartlettje.bsky.social · 27/03/2026
That looks great, and you've just introduced me to `sample_prior = "only"` !
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James Bartlett @bartlettje.bsky.social · 27/03/2026
The author replied with this earlier, but thank you!
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James Bartlett @bartlettje.bsky.social · 27/03/2026
That's really good advice, I like that.
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James Bartlett @bartlettje.bsky.social · 26/03/2026
🤩
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James Bartlett @bartlettje.bsky.social · 26/03/2026
Already have a few papers on the reading list, but I'd never come across this one!
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James Bartlett @bartlettje.bsky.social · 26/03/2026
It's for students, so the more general the better as it's an introduction Bayesian modelling. This looks great though for a range of sources and models.
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James Bartlett @bartlettje.bsky.social · 26/03/2026
This is perfect, how has this not popped up in my searches?!
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James Bartlett @bartlettje.bsky.social · 26/03/2026
Thanks! I hadn't seen the Schad one before.
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James Bartlett @bartlettje.bsky.social · 26/03/2026
Bayesians: does anyone (@solomonkurz.bsky.social maybe?) have a good resource for how to set priors for beginners? Such as what kind of information in past papers you can use to inform your choices? I found this but any resources welcome! svmiller.com/blog/2021/02...
svmiller.com
How Should You Think About Your Priors for a Bayesian Analysis?
Here, I riff on how students should think about priors for a Bayesian analysis. It seems daunting, but it just means you should use your head and not expect software to think of your data/model for...
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Gilad Feldman @giladfeldman.bsky.social · 24/03/2026
CodaNote: Collaborative Markdown/Quarto/Rmarkdown People were looking for collaborating on MD family files with knit rendering... I built this tool for CORE team, works like Google Docs. Opened it to all from internal use so everyone can use it. Feedback welcome! Try: codanote.vercel.app
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James Bartlett @bartlettje.bsky.social · 16/03/2026
I was so lucky as Glasgow increased their paternity leave from 2 weeks to 4 weeks on January 1st. Part of me feels guilty as friends could not benefit from that. I genuinely don’t know how we would have coped if I had to go back after 2 weeks, so employers, sort yourselves out.
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James Bartlett @bartlettje.bsky.social · 16/03/2026
I’m back at work after almost five weeks off on paternity leave. I thought I would be much more restless but I really enjoyed the time away minus the sleep deprivation.
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James Bartlett @bartlettje.bsky.social · 11/03/2026
If anyone is interested in a journal leadership position, there is a call for editor-in-chief for the Journal of Open Psychology Data: openpsychologydata.metajnl.com/announcements. I'm on the board, so I'm happy to chat to anyone or put your in touch with others!
openpsychologydata.metajnl.com
Announcements | Journal of Open Psychology Data
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James Bartlett @bartlettje.bsky.social · 16/02/2026
print(“Hello World”) For someone who almost lives for their work, the next four weeks are going to be a wild change of pace! Extremely fortunate paternity leave increased from 2 weeks just in time for baby Astrid. P
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