James Bartlett
LightNews LightNews
banner
bartlettje.bsky.social
James Bartlett
@bartlettje.bsky.social
960 followers 520 following 250 posts
Psychology lecturer at UoG 🏴󠁧󠁢󠁳󠁣󠁴󠁿
All things data skills, statistics, quant research methods, and HE pedagogy. #rstats
🗣️🇬🇧🇩🇪
Posts Replies Media Videos
Pinned
bartlettje.bsky.social
James Bartlett @bartlettje.bsky.social · Jun 16
I've been meaning to rejig my website for a while; et voilà: bartlettje.github.io. I value open educational materials way above publications, so I've updated the overview and the workshops relating to it!
About – James E Bartlett
bartlettje.github.io
bartlettje.bsky.social
After sitting on some revisions for months, I've made some major changes to one of my preprints. I outline an assessment approach which embeds the concepts of reproducibility and replicability while students are demonstrating their analysis skills.

osf.io/preprints/os...
OSF
osf.io
November 10, 2025 at 10:48 AM
Reposted by James Bartlett
dsbarra.bsky.social
Papers from July to Sept 2025 at AMPPS are killer. We don't have formal print issues, but we have this-- journals.sagepub.com/toc/ampa/8/3
Advances in Methods and Practices in Psychological Science - Volume 8, Number 3
Table of contents for Advances in Methods and Practices in Psychological Science, 8, 3
journals.sagepub.com
October 21, 2025 at 7:11 PM
bartlettje.bsky.social
Ever year when I introduce NHST and the importance of effect sizes, I get students to respond what success rate would convince them that someone could see the future. Weirdly, most of the time, the answer isn't 53%...
October 20, 2025 at 2:11 PM
Reposted by James Bartlett
felixthoemmes.bsky.social
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
September 29, 2025 at 5:41 PM
bartlettje.bsky.social
Love this, very fun!
davidbauer.ch David Bauer @davidbauer.ch · Sep 19
In the first seven days since I launched this new game, almost ten thousand people from 82 countries have played it. (Top cities so far: New York City, Zurich, Toronto, Chicago, Berlin, Vienna, Stockholm)

What topics would you like me to add next?

dataguessr.com
Dataguessr
Update your knowledge of the world. One quiz at a time.
dataguessr.com
September 20, 2025 at 9:30 AM
Reposted by James Bartlett
ianhussey.mmmdata.io
Proposal for how to fix family wise error rates.

For every uncorrected p value you must add an extra letter to the claim.

“Eating chocolate maaaaaaaaay be associated with lower rates of stroke”
September 16, 2025 at 6:55 PM
Reposted by James Bartlett
brandmaier.bsky.social
Psychological Methods is looking for Editorial Fellows. We are looking forward to applications of early-career psychologists who will bring experiential diversity to their work. If you are interested, reach out to me or directly apply here to work with a wonderful team: www.apa.org/pubs/journal...
www.apa.org
September 16, 2025 at 12:16 PM
Reposted by James Bartlett
debruine.bsky.social
This fall I will have a blind student in my coding class for the first time. Do any other instructors or visually impaired coders have advice beyond making sure my book has useful alt-text for the images? #rstats #accessibility

Class book: psyteachr.github.io/reprores-v5/
September 16, 2025 at 9:54 AM
bartlettje.bsky.social
Our contribution to an upcoming book on teaching open science was "how to teach reproducible research". There are plenty of lesson plans or individual courses out there but less on how you can build skills across a whole degree.

osf.io/preprints/ps...
OSF
osf.io
September 8, 2025 at 11:04 AM
Reposted by James Bartlett
psyarxivbot.bsky.social
How to teach reproducible research: https://osf.io/g5ehx
September 8, 2025 at 10:42 AM
Reposted by James Bartlett
jennyterry.bsky.social
Keen to help develop the international #StatsEd research community? Interested in running large-scale collaboarative #StatsEd research projects?

Consider joining the @rosenetwork.bsky.social committee! There are a few days left to apply. More details: www.rose-network.org/about-us/vac....
September 8, 2025 at 7:55 AM
Reposted by James Bartlett
aufdroeseler.bsky.social
At the FORRT Replication Hub, our mission is to support researchers who want to replicate previous findings. We have now published a big new component with which we want to fulfill this mission: An open access handbook for reproduction and replication studies: forrt.org/replication_...
September 3, 2025 at 6:54 AM
bartlettje.bsky.social
I’ve had a beautiful few days in Münster. Now for a 4 hour adventure around Frankfurt until my late late flight.
September 3, 2025 at 9:57 AM
bartlettje.bsky.social
Workshop done and dusted before the welcome event! All the attendees got their books up and running with minimal R Studio and GitHub shenanigans.

All materials here with a walkthrough video for the book output: bartlettje.github.io/disseminatio...
September 1, 2025 at 10:00 AM
bartlettje.bsky.social
I managed to make up for it 💛🖤💛
September 1, 2025 at 6:30 AM
bartlettje.bsky.social
I had planned to watch a football match, but got the unlucky side of resale tickets 🥲 Instead, I had a lovely 2 hour wander around Bochum…
August 30, 2025 at 12:06 PM
Reposted by James Bartlett
rosenetwork.bsky.social
We’re looking for enthusiastic colleagues to join our voluntary committees and help shape the future of statistics education.

Current vacancies are now live
lnkd.in/eAXCBZ3j

📅 Deadline: 10th September 2025 (midnight, your time zone)
👉 Apply here: lnkd.in/euqHE4s4
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
August 28, 2025 at 7:51 AM
Reposted by James Bartlett
dingdingpeng.the100.ci
Ever stared at a table of regression coefficients & wondered what you're doing with your life?

Very excited to share this gentle introduction to another way of making sense of statistical models (w @vincentab.bsky.social)
Preprint: doi.org/10.31234/osf...
Website: j-rohrer.github.io/marginal-psy...
Models as Prediction Machines: How to Convert Confusing Coefficients into Clear Quantities Abstract Psychological researchers usually make sense of regression models by interpreting coefficient estimates directly. This works well enough for simple linear models, but is more challenging for more complex models with, for example, categorical variables, interactions, non-linearities, and hierarchical structures. Here, we introduce an alternative approach to making sense of statistical models. The central idea is to abstract away from the mechanics of estimation, and to treat models as “counterfactual prediction machines,” which are subsequently queried to estimate quantities and conduct tests that matter substantively. This workflow is model-agnostic; it can be applied in a consistent fashion to draw causal or descriptive inference from a wide range of models. We illustrate how to implement this workflow with the marginaleffects package, which supports over 100 different classes of models in R and Python, and present two worked examples. These examples show how the workflow can be applied across designs (e.g., observational study, randomized experiment) to answer different research questions (e.g., associations, causal effects, effect heterogeneity) while facing various challenges (e.g., controlling for confounders in a flexible manner, modelling ordinal outcomes, and interpreting non-linear models). Figure illustrating model predictions. On the X-axis the predictor, annual gross income in Euro. On the Y-axis the outcome, predicted life satisfaction. A solid line marks the curve of predictions on which individual data points are marked as model-implied outcomes at incomes of interest. Comparing two such predictions gives us a comparison. We can also fit a tangent to the line of predictions, which illustrates the slope at any given point of the curve. A figure illustrating various ways to include age as a predictor in a model. On the x-axis age (predictor), on the y-axis the outcome (model-implied importance of friends, including confidence intervals). Illustrated are 1. age as a categorical predictor, resultings in the predictions bouncing around a lot with wide confidence intervals 2. age as a linear predictor, which forces a straight line through the data points that has a very tight confidence band and 3. age splines, which lies somewhere in between as it smoothly follows the data but has more uncertainty than the straight line.
August 25, 2025 at 11:49 AM
bartlettje.bsky.social
Absolutely love this submission for the Munro Tidy Tuesday!
jessimoore.bsky.social Jessica Moore @jessimoore.bsky.social · Aug 22
Learned a bit of Gaelic for this week's #tidytuesday. There are many names and variations of names for "mountain", "hill", "peak", "point", etc. I used this site to help me classify them: cuhwc.org.uk/resources/me...

Code: jessjep.github.io/blog/posts/t...

#ggplot2 #dataviz
One chart shows the height distributions of Scottish Munros and Munro Tops by their Gaelic name (Stob, Carn, Beinn, Sgurr and Meall). Stobs are tallest, on average, but have a wide distribution of different heights. In comparison, mealls are the shortest and tend to all be of a similar height. The second chart shows the number of munros/munro tops by each name type. Beinns are most common and are usually munros rather than munro tops. Carns are second most common and are around 50% munros and 50% munro tops.
August 22, 2025 at 1:02 PM
bartlettje.bsky.social
HE equivalent of being paid in exposure.
drgbuckingham.bsky.social Gavin Buckingham @drgbuckingham.bsky.social · Aug 20
When you get assigned the vacant admin role in your department
August 20, 2025 at 1:00 PM
bartlettje.bsky.social
One of the best bits of advice I ever received was keeping a log of things you do over the year. It's invaluable for promotion applications and performance reviews as you will 100% forget cool stuff you did. At Glasgow, we have four criteria, so I log things down to make it easier later:
Screenshot from Notion for making a list of accomplishments for promotion applications and reviews. It shows objectives, feedback, and four promotion criteria.
August 20, 2025 at 11:08 AM
Reposted by James Bartlett
jennyterry.bsky.social
Out today in Teaching Statistics! Our paper on getting started in (statistics) education research, inspired by our 2024 @ukcots.bsky.social panel on the same. #StatsEd onlinelibrary.wiley.com/doi/10.1111/...
Education research: Getting started
Statistics education research advances knowledge, informs teaching practices, and improves learning outcomes, but how does a higher education statistics educator get started in research? A panel disc...
onlinelibrary.wiley.com
August 20, 2025 at 10:44 AM
bartlettje.bsky.social
What beautifully clear visualisation!
ourworldindata.org Our World in Data @ourworldindata.org · Jul 30
A century ago, around half of today’s independent countries were European colonies
The visual displays a stacked area chart titled "Number of European overseas colonies by colonizer," indicating the historical decline in the number of colonies held by European nations. The vertical axis represents the number of colonies, ranging from 0 to 100, while the horizontal axis spans from 1925 to 2022. The chart shows that in 1925, there were 97 colonies, predominantly held by France and the United Kingdom. A sudden drop in the number of colonies occurs around the 1960s, correlating with a period of rapid decolonization following World War II. There are annotations highlighting key information: "97 of the countries that are independent today were European colonies in 1925" and an explanation of the rapid decolonization. Data source: Bastian Becker (2023). Chart CC BY Our World in Data
July 30, 2025 at 2:19 PM
bartlettje.bsky.social
I love some of the points in this interview. Reproducibility is essential but a failure to replicate not necessarily a problem. They describe helpful and non-helpful sources, where you expect a rate of replication failure given uncertainty in the system.

hdsr.mitpress.mit.edu/pub/6an6ppum...
Highlights of the US National Academies Report on “Reproducibility and Replicability in Science”
An interview with Harvey Fineberg and Victoria Stodden by Xiao-Li Meng
hdsr.mitpress.mit.edu
July 30, 2025 at 12:58 PM
bartlettje.bsky.social
As an aside, immensely funny that undergraduates are (rightly) paid to complete verification reports, since it's - you know - a job role that should be compensated 🤷‍♂️
bartlettje.bsky.social James Bartlett @bartlettje.bsky.social · Jul 28
Some really interesting details in here for supporting/training undergraduates to complete reproducibility checks. Given the new psych science initiative, I didn't realise some economics journals have been doing it systematically for years.

www.tandfonline.com/doi/abs/10.1...
Teaching for Large-Scale Reproducibility Verification
We describe a unique environment in which undergraduate students from various STEM and social science disciplines are trained in data provenance and reproducible methods, and then apply that knowle...
www.tandfonline.com
July 28, 2025 at 11:16 AM