Felix Thoemmes

Recently did around 30 requests to ppl who'd published very similar papers to the one I needed reviews for. 3 declines, 25 no response. Please at least decline guys it slows stuff down so much otherwise.

In 2014 I introduced a replication project in my grad research methods class. I taught this version of the class 4 times (no longer teach it). Some tallies: 9 published replication papers; 30 grad student authors; 19 *open* data sets; materials, syntax, etc also open (all on OSF). Check them out 👇

🏆 Individual: @simine.com, psychologist at @unimelb.bsky.social & editor-in-chief of Psychological Science, is recognized for pioneering methodological rigor, reproducibility & collaborative research, driving initiatives such as @improvingpsych.org & the journal Collabra @ucpress.bsky.social. (2/5)

We proudly present the winners of the #EinsteinFoundationAward for Promoting Quality in Research 2025! The jury has selected outstanding contributions that promote research quality around the world!
In coop w/ QUEST Center @bihatcharite.bsky.social
www.einsteinfoundation.de/presse/2025/... (1/5)

My amazing friend and MetaMelb co-director @simine.com has won the 2025 Einstein Foundation Award! @unimelb.bsky.social @psychunimelb.bsky.social and @replicats.bsky.social are so lucky to have you

Science is a collective effort, but @simine.com is a singular force. She is an exemplary model for all of us to follow in her commitment and action to improving science, on every dimension.

She is so deserving of the award. The only uncertainty is whether the award deserves her!

Congratulations to @simine.com well deserved winner of the Einstein Foundation Individual Award for Promoting Quality in Research 2025 🎉 www.einsteinfoundation.de/en/media/pre...

I think it's hard to overstate how much Simine has changed research practices and standards in psychology for the better, despite at times massive resistance from powerful parties with a vested interest in maintaining the status quo. Very well deserved award imho 🥳

1/9 - Hi I'm David: impatient with repetition and fascinated by surprise.

Believe in growth mindset? Alex Burgoyne’s talk at #psynom25 might change your mind. Their meta-analysis found that growth mindset interventions did not predict academic achievement once publication bias and study quality were accounted for. 1/

Greenlandic families fight to get children back after parenting tests banned The Danish government has banned the use of parental competency tests on Greenlandic families after decades of criticism.

Horrific use of psychological testing, up there with the 20th century's worst practices: www.bbc.co.uk/news/article...

What if color harmonies were a continuum? Not fixed rules, and you could glide through them just by interpolating?

Oh great... My university just announced that they will be adopting it next year. The likely first case in my department to use it on... me. Argh.

I am so proud that we have such a great MS and PhD program University of Michigan Institute for Social Research (ISR). It is unique in the set of data science skills that you are trained on and preparing for the future of how data will be used to answer important societal questions.

The case of the disappearing teaspoons: longitudinal cohort study of the displacement of teaspoons in an Australian research institute Objectives To determine the overall rate of loss of workplace teaspoons and whether attrition and displacement are correlated with the relative value of the teaspoons or type of tearoom. Design Longitudinal cohort study. Setting Research institute ...

70 teaspoons placed in tearooms around the institute & observed weekly over 5 months. 80% of spoons disappeared; spoon halflife~81 days. Communal room halflife lower than in specific labs. 250 spoons annually required to maintain 70 spoon population.

pmc.ncbi.nlm.nih.gov/articles/PMC...

bridgesampling: Bridge Sampling for Marginal Likelihoods and Bayes Factors Provides functions for estimating marginal likelihoods, Bayes factors, posterior model probabilities, and normalizing constants in general, via different versions of bridge sampling (Meng & Wong, ...

Belated but hopefully still exciting #rstats news: bridgesampling version 1.2-1 has just arrived on CRAN: cran.r-project.org/package=brid...
We now finally provide cmdstanr support (!) plus Monte Carlo Standard Error (MCSE), both thx to Giorgio Micaletto and @avehtari.bsky.social!

Sending this to literally every person I know doing online surveys. Basically, unless you know your universe of respondents (e.g., govt employees, elected officials, etc), everything else is suspect.

#dataviz This kind of plot, showing the distribution on the logit scale, and also on the probability scale is a great idea!! 😍

new paper by Sean Westwood:

With current technology, it is impossible to tell whether survey respondents are real or bots. Among other things, makes it easy for bad actors to manipulate outcomes. No good news here for the future of online-based survey research

i haven't had enough time to form an impression of Gemini 3 globally, but it remains just as much of a natural-born illusionist as all the other models. takes almost no work to get it to give up the ghost on consciousness

Computational notebooks Better Code, Better Science: Chapter 6, Part 4

Computational notebooks - the first in a set of posts on this topic. russpoldrack.substack.com/p/computatio...

I'm so so happy to be part of the @improvingpsych.org executive committee! SIPS has been an anchor and inspiration for me for many years, and I'm excited to be able to contribute to its important work!✨ #OpenScience

A clutch of great tit eggs, with seven arranged in a circle around the eighth and with their pointed end facing inwards.

It takes an exceptionally gifted bird to maintain such a pleasing clutch arrangement.
"Nesthetics" would be a great topic for a coffee table book.

What survey instrument are folks using to measure perceived learning in college students? This is waaaay outside my field, so any help is appreciated!

DH5001: Introduction to Data Stewardship | University College Cork Learn, Study and Research in UCC, Ireland's first 5 star university. Our tradition of independent thinking will prepare you for the world and the workplace in a vibrant, modern, green campus.

Amazing progress from @sonrai.bsky.social on the Introduction to Data Stewardship microcredit. Big congrats to the team involved. Please consider including this small cost into your grant applications to ensure your research team is well trained.

www.ucc.ie/en/dh5001/

Synchronous Robustness Reports could explore implications of different analytical choices – but they could still suffer from bias. Hardwicke argues that preregistration is crucial to prevent it.

@tomhardwicke.bsky.social

Here are all the assignments, btw, all CC-licensed for anyone to adapt from! #rstats #dataviz github.com/andrewheiss/...

Researchers face incentives to write up their empirical findings in a way that maximizes publication success. We analyze the language of journal articles and its association with statistical significance to explore questionable research practices at the stage of writing up articles, using 140,606 articles from health, biology, psychology, economics, and multidisciplinary journals over 32 years. For most disciplines, a higher share of non-significant main findings is associated with more hedging and negative striking words, fewer positive striking words, and fewer superlatives. We neither find evidence that authors upsell ambiguous results using sensational language nor that ambiguous results are written up less readably. Contrarily, articles with a higher share of statistically significant main findings are written up more sensationally. We find that emphasis on (marginal) statistical significance increases with the share of non-significant main findings, reflecting a dichotomized interpretation of p-values based on arbitrary thresholds. Particularly, p-excuses give the impression of statistical significance when the finding is actually not significant, consistent with the notion of 'spin'. This study provides empirical insights that might help researchers to self-reflect on writing up empirical findings. More training and fewer incentives to sell findings using sensational language and spin can help to improve academic writing.

"p-Excuses"

E.g., p = .056 is “marginally significant” or “close to being significant”

🔹 Most p-excuses are used in psychology.

🔹 The least p-excuses are used in health.

Preprint: osf.io/preprints/me...

#MetaSci #AcademicSky 🧪

It is bonkers to me that diff-in-diff is now more commonly discussed in research papers than instrumental variables.

paulgp.com/2025/11/15/e...

If you’ve ever attempted a meta-analysis, you’ll know that authors generally do a poor job reporting statistics. If you do this well, you’ll improve your chances of your work being included in a future meta-analysis.