Constantin Späth
@cspaeth.bsky.social
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Sport and Exercise Psychology, University of Potsdam, Germany
reposted by
Constantin Späth
Daniel Lakens
1 day ago
New 'Preliminary Report' submission format at Science and Medicine in Football. An idea that should be interesting for other journals! Explicitly make space for honestly reported smaller sample-size studies
www.tandfonline.com/doi/full/10....
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It seems, I was not up-to-date. Discipline specific examples have already been discussed, or should I say "will be discussed" ;) Your output is insane!
@crist14n.bsky.social
sportrxiv.org/index.php/se...
bsky.app/profile/cspa...
add a skeleton here at some point
1 day ago
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Constantin Späth
Lisa DeBruine
4 days ago
The package formerly known as papercheck has changed its name to metacheck! We're checking more than just papers, with functions to assess OSF projects, github repos, and AsPredicted pre-registrations, with more being developed all the time.
scienceverse.github.io/metacheck/
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Check Research Outputs for Best Practices
A modular, extendable system for automatically checking research outputs for best practices using text search, R code, and/or (optional) LLM queries.
https://scienceverse.github.io/metacheck/
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Just discovered this great preprint by
@crist14n.bsky.social
@lakens.bsky.social
sportrxiv.org/index.php/se...
I wish someone had given me tutorials/easy-to-understand explanations like these when I was doing my bachelor's degree!
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What is your hypothesis? : On the importance of knowing your hypothesis before conducting a hypothesis test | SportRxiv
https://sportrxiv.org/index.php/server/preprint/view/577
5 days ago
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Constantin Späth
Solomon Kurz
7 days ago
Relatedly, I think SESOI is a tremendously useful and under-appreciated concept. It's become a regular tool in my power analysis workflows, and I wish I understood it sooner in my career.
add a skeleton here at some point
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Constantin Späth
Anne Scheel
7 days ago
These are exactly the right discussions to have IMO, especially when they help us better understand what knowledge we need (and might still be missing) for setting up meaningful, informative tests.
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Constantin Späth
James Steele
7 days ago
I think the thing that most people struggle with though is how to set that SESOI...
@cspaeth.bsky.social
and I been chatting about it in this thread (and I give examples of how we've gone about it... though our recent theory prediction + practical SESOI is best I think)
bsky.app/profile/cspa...
add a skeleton here at some point
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Constantin Späth
Anne Scheel
8 days ago
There still seems to be a lot of confusion about significance testing in psych. No, p-values *don’t* become useless at large N. This flawed point also used to be framed as "too much power". But power isn't the problem – it's 1) unbalanced error rates and 2) the (lack of a) SESOI. 1/ >
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New Commentary published in the German Journal for Sport and Exercise Research, emphasizing not only the need to specify a SESOI when testing a claim, but recommending also to start a discussion about best practices to determine a SESOI
link.springer.com/article/10.1...
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From best practices to severe testing: A methodological response to Büsch and Loffing (2024) - German Journal of Exercise and Sport Research
This commentary builds on the Büsch and Loffing (2024) exploration of methodological best practices for validly evaluating intervention studies. Extending their perspective, it is argued that research...
https://link.springer.com/article/10.1007/s12662-025-01072-7
8 days ago
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reposted by
Constantin Späth
Peder M Isager
8 days ago
My paper with
@lakens.bsky.social
and
@annaveer.bsky.social
- “Replication value as a function of citation impact and sample size” - has just been published in Meta psychology!
open.lnu.se/index.php/me...
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"the very core of science – an institution that promotes mutual criticism, while accepting our fallibility"
bsky.app/profile/lake...
add a skeleton here at some point
10 days ago
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Constantin Späth
Kristoffer Magnusson
10 days ago
New release of PowerLMM.js! Browser-based power analysis for longitudinal models with dropout. Now includes: - Power analysis summary report - Reproducible & shareable configs (URL/JSON) - Calculations validated against R - Hypothesis region visualization
powerlmmjs.rpsychologist.com
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reposted by
Constantin Späth
James Steele
14 days ago
We're struggling to get reviews for our recent stage 1 at
@pci-regreports.bsky.social
www.medrxiv.org/content/10.1...
If you've expertise in the methods proposed and/or subject area and would be happy to review then please get in contact and I can let the recommender handling the submission know.
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Preserving musculoskeletal health through resistance training in individuals undergoing Glucagon-like Peptide-1 Receptor Agonist Therapy: a controlled interrupted time-series analysis (Stage 1 Registe...
Glucagon-like peptide-1 receptor agonists (GLP-1-RAs) are increasingly prescribed for weight loss and cardiometabolic health but have been evidenced to lead to loss of lean soft tissue mass. Resistanc...
https://www.medrxiv.org/content/10.1101/2025.06.24.25330195v2
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reposted by
Constantin Späth
Ryan Briggs
14 days ago
I think this is kind of neat and I don't think anyone else has noticed it (I've looked and I can't find anyone who has)
osf.io/preprints/so...
Maybe I should back off "justification" language, but it's at least a remarkable coincidence. I still think someone else *must* have noticed it...
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Constantin Späth
Anne Scheel
16 days ago
It also reminded me of the “stats maven” concept coined by
@sanjaysrivastava.com
some very long time ago, I believe here?
thehardestscience.com/2014/12/04/s...
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New study exploring a potential strategy for increasing affective responses during exercise while emphasizing the need to rigorously test related auxiliary assumptions and determine an SESOI for confirmatory research:
doi.org/10.1080/0264...
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Making the exercise experience more pleasurable: Exploring the psychological effect of allowing intensity adjustments during exercise
Feeling good during exercise is a key predictor of whether people stay active. One factor thought to influence this is whether exercisers perceive control over their training intensity. A meta-anal...
https://doi.org/10.1080/02640414.2025.2575415
17 days ago
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reposted by
Constantin Späth
Jessie Baldwin
25 days ago
When is it appropriate to deviate from a pre-registration, and how should this be done? 🧐 Join us to find out from Daniël Lakens
@lakens.bsky.social
at the next ReproducibiliTea! October 28, 1pm GMT. Sign up:
www.eventbrite.co.uk/e/when-and-h...
@tabeasch.bsky.social
@reproducibilitea.org
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When and How to Deviate From a Preregistration, with Prof Daniël Lakens
Prof Daniël Lakens will share guidance on appropriate circumstances and methods for deviating from a pre-registration
https://www.eventbrite.co.uk/e/when-and-how-to-deviate-from-a-preregistration-with-prof-daniel-lakens-tickets-1756686138529?aff=ebdsshcopyurl&utm-campaign=social&utm-content=attendeeshare&utm-medium=discovery&utm-term=organizer-profile&utm-share-source=organizer-profile
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reposted by
Constantin Späth
James Steele
about 1 month ago
Final version of our high-powered, pre-registered test of theoretically derived precise predictions regarding comparative RT interventions (full vs lengthened partial range of motion) in trained particiapnts now published in Journal of Sport Sciences:
doi.org/10.1080/0264...
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The effects of lengthened-partial range of motion resistance training of the limbs on arm and thigh muscle area: A multi-site randomised trial
This project represents a highly powered pre-registered comparison of full ROM (fROM) and ‘lengthened partial’ ROM (lpROM) resistance training [RT]. A randomized controlled cluster trial across 15 ...
https://doi.org/10.1080/02640414.2025.2567805
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great blog post
sometimesimwrongblog.wordpress.com/2018/06/14/n...
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nothing beats something
[DISCLAIMER: The opinions expressed in my posts are personal opinions, and they do not reflect the editorial policy of Social Psychological and Personality Science or its sponsoring assoc…
https://sometimesimwrongblog.wordpress.com/2018/06/14/nothing-beats-something/
about 1 month ago
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reposted by
Constantin Späth
Daniel Lakens
about 1 month ago
Doing the right thing, just because it is the right thing is underappreciated by academics.
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"Each study has to be considered on its own. RCTs are fine, but they are just one of the techniques in the armory that one would use to try to discover things. Gold standard thinking is magical thinking."
medium.com/@timothyogde...
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Experimental Conversations: Angus Deaton
This is a chapter from the forthcoming book Experimental Conversations, to be published by MIT Press in 2016. The book collects interviews…
https://medium.com/@timothyogden/experimental-conversations-angus-deaton-b2f768dffd57
about 1 month ago
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reposted by
Constantin Späth
about 1 month ago
why I’m happy to admit to my research failures, and you should too
https://www.newsbeep.com/uk/173671/
The open-science movement has promoted the sharing of scientific protocols, statistical-analysis programs and data files. These efforts have…
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why I’m happy to admit to my research failures, and you should too - United Kingdom News Beep
The open-science movement has promoted the sharing of scientific protocols, statistical-analysis programs and data files. These efforts have undoubtedly made
https://www.newsbeep.com/uk/173671/
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reposted by
Constantin Späth
Michael Höfler
about 1 month ago
Now that this is done, I have no goals left in life.
meth.psychopen.eu/index.php/me...
(* I hope I can repeat this joke a few more times.)
#falsification
#popper
#science
#replication
#statistics
#metascience
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reposted by
Constantin Späth
James Steele
about 1 month ago
Sport and exercise science doesn't need papers telling researchers how to "make the most" of their small samples. The field needs to either grow the fuck up and collect sufficient data for adequate power/precision, or continue with their small samples but shut the fuck up and wait for a decent meta.
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Constantin Späth
Daniel Lakens
about 1 month ago
Not having to deviate from your preregistration is how you impress peers. You demonstrate you know something, because knowledge allows you to make good predictions. The more deviations, the less impressive the tests in a study are.
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reposted by
Constantin Späth
James Steele
about 2 months ago
Me when speaking to sport and exercise science researchers who won't commit to a smallest effect size of interest.
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reposted by
Constantin Späth
James Steele
3 months ago
I remember reading the preprint about a year ago... rereading with coffee this saturday morning. It reminded me, as it did when I first read it, why I find Lakatosian/Meehlian approaches that to an extent synthesise elements of both Popper and Mayo most appealing...
add a skeleton here at some point
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reposted by
Constantin Späth
Daniel Lakens
3 months ago
Too often, I see people talk about a replication as if the first study has established something, and the replication study is a double-check. What people often fail to understand is that we do not do replication studies to *check* a finding, but to *establish* a finding. 1/x
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reposted by
Constantin Späth
Gilad Feldman
3 months ago
Second, beyond career implications, doing open science & especially replications often comes with immense emotional burden & affects mental health. Ongoing harsh criticism, suspicion, & hostility, from senior scholars with immense power in the field, isn't something people normally want or look for.
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reposted by
Constantin Späth
Daniel Lakens
3 months ago
New Preprint: Rethinking Type S and M Errors. We argue Type S and M errors are not useful when designing or evaluating studies, and present alternative solutions to address the issues they were supposed to address (minimum effect tests, and correcting for bias with p-uniform).
osf.io/preprints/ps...
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reposted by
Constantin Späth
Daniel Lakens
7 months ago
New paper: Blaming the Thermometer for the Fever: Separating Misapplication from Method in Null Hypothesis Significance Testing, with
@laabho.bsky.social
and
@jnwulff.bsky.social
. We – strongly – push back on criticisms against NHST and argue for proper application.
papers.ssrn.com/sol3/papers....
>
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Blaming the Thermometer for the Fever: Separating Misapplication from Method in Null Hypothesis Significance Testing
In empirical research, Null Hypothesis Significance Testing (NHST) is the most common methodology to interpret research findings and make inferences, particular
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5212117
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reposted by
Constantin Späth
Thùy Vy T Nguyễn
3 months ago
Exactly my first thought seeing d = 8: "No effect size shall exceed the preference for chocolate over poop"
add a skeleton here at some point
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reposted by
Constantin Späth
Lisa DeBruine
4 months ago
If you're interested in watching me gibber about papercheck for an hour, I'm giving a local seminar tomorrow at 15:00 UK time. DM me before 14:30 and I'll send you the Zoom link.
scienceverse.github.io/talks/2025-p...
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reposted by
Constantin Späth
Daniel Lakens
4 months ago
There might not be 'a scientific method' but there is a very desirable property of scientific methods. If you are right, the procedure you use to make claims should tell you that you are right. And when you are wrong, the procedure you use to make claims should tell you that you are wrong.
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Constantin Späth
MetaArXivBot
5 months ago
Replication value as a function of citation impact and sample size: response to commentaries:
https://osf.io/52nvj
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reposted by
Constantin Späth
Daniel Lakens
4 months ago
Excellent opportunity for a PhD position with the wonderful supervisors Frank Renkewitz and Moritz Heene
job-portal.lmu.de/jobposting/5...
“Models, Measures, Moderators - Exploration and Explanation of Heterogeneity in Psychological Replications” - great topic for a PhD!
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Research Associate (m/f/x)
https://job-portal.lmu.de/jobposting/5f8aaaa92946fd18f937129b473a2dbd1aee82ae0
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"Elitism in science has a legitimate basis, but its ubiquitous excesses affront the principle of universalism. Bad ideas get accepted because their proponents are members of the elite. More seriously, good ideas may be ignored ->
4 months ago
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Constantin Späth
Nature Human Behaviour
4 months ago
While individualism and isolated work remain common in
#academia
, coordination offers substantial benefits. This Comment urges systemic changes from all stakeholders toward more coordinated
#science
.
@lakens.bsky.social
@sajedehra.bsky.social
www.nature.com/articles/s41...
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A systemic approach to better coordination in science - Nature Human Behaviour
Although individualism and isolated work remain common in academia, coordination offers substantial benefits. This Comment calls on researchers, funders, policymakers, journals and universities to cre...
https://www.nature.com/articles/s41562-025-02260-z
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The perverted scientific publication system explained for the German layman:
www.youtube.com/watch?v=qtXA...
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Steuerverschwendung in der Wissenschaft
YouTube video by MAITHINK X
https://www.youtube.com/watch?v=qtXABkcRpnE
4 months ago
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reposted by
Constantin Späth
James Steele
5 months ago
Appropriate sample sizes and a priori determination of them based on some justifiable SESOI are almost non-existent in our field... in some of our recent work we've really been trying to change that (
sportrxiv.org/index.php/se...
), but most treat n=10 and n=300 as the same level of evidence.
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The effects of lengthened-partial range of motion resistance training of the limbs on arm and thigh muscle cross-sectional area: A multi-site cluster trial | SportRxiv
https://sportrxiv.org/index.php/server/preprint/view/485
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reposted by
Constantin Späth
Joost
5 months ago
Maybe include one to Merton as well:
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reposted by
Constantin Späth
Daniel Lakens
5 months ago
Very excited to publicly share news about a new tool, Papercheck, that
@debruine.bsky.social
and me started to develop more than a year ago! In an introductory blog post, we explain our philosophy to automatically check scientific papers for best practices.
daniellakens.blogspot.com/2025/06/intr...
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Introducing Papercheck
Introducing Papercheck Introducing Papercheck An Automated Tool to Check for Best Practices in Scientifi...
https://daniellakens.blogspot.com/2025/06/introducing-papercheck.html
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Constantin Späth
Anouk Bouma
5 months ago
I wrote a blogpost on something I’ve been thinking about a lot lately: how metascientists could (and should) think more about their users when designing tools and reforms. Would love to hear any thoughts on this topic!
#metascience
#usercentered
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When Good Tools Fail: The Missing Step in Scientific Reform — Meta-Research Center
This blogpost was written by Anouk Bouma. Anouk her PhD project focuses on studying and enhancing various interventions for improving scientific robustness at journal level, supervised by Marcel van A...
https://tinyurl.com/ym8sktfu
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reposted by
Constantin Späth
Aaron Caldwell
5 months ago
I'm pleased to announce the publication of two important papers in Sports Medicine on the first every large replication project in sport and exercise science. Read the full papers:
lnkd.in/gH3NCqK5
lnkd.in/gE7izySW
#SportsScience
#EvidenceBasedPractice
#Research
#OpenScience
#Replication
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LinkedIn
This link will take you to a page that’s not on LinkedIn
https://lnkd.in/gH3NCqK5
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Meehl, 1990
5 months ago
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reposted by
Constantin Späth
James Steele
5 months ago
This... But
#sportscience
#exercisescience
add a skeleton here at some point
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In short, theories serve human purposes; their creation is motivated and their logic is organized by the skills and limitations of human capabilities. - Robert Dubin
5 months ago
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reposted by
Constantin Späth
Max Ditroilo
5 months ago
@jamessteeleii.bsky.social, we have recorded the talk. Here is a zoom link to the talk:
tinyurl.com/3m99me8z
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Video Conferencing, Web Conferencing, Webinars, Screen Sharing
Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom ...
https://tinyurl.com/3m99me8z
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reposted by
Constantin Späth
Dan Quintana
5 months ago
Sharing the raw data used in meta-analyses should be mandatory in all circumstances
add a skeleton here at some point
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"If the use of a tool is detached from a philosophy of science it risks becoming a heuristic."
bsky.app/profile/lake...
add a skeleton here at some point
5 months ago
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