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Constantin Späth

@cspaeth.bsky.social
30 followers 45 following 100 posts

Sport and Exercise Psychology, University of Potsdam, Germany

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Reposted by Constantin Späth
Amitai Shenhav @ashenhav.bsky.social · 28/09/2026
2 yrs ago, I briefly laid out a new theory of how motivation works (AGH). Here, I expand on the problems AGH was trying to solve, why they are hard to solve, what my solution looks like, and how this should change our understanding of thoughts & actions. osf.io/preprints/ps... 🧵A few highlights:
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Constantin Späth @cspaeth.bsky.social · 22/09/2026
Scientific norms derived from a philosophy of science should perhaps not be viewed as “restrictive rules,” but rather as “enabling conditions”
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Constantin Späth @cspaeth.bsky.social · 19/09/2026
Great thoughts on replications! @uyguntunc.bsky.social I’d vote for an additional educational version that is, as far as possible, jargon-free and suitable for undergraduate students. :) bsky.app/profile/phil...
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PhilSci-Archive @philsci-archive.bsky.social · 29/05/2026
New on the Archive: Uygun Tunc, Duygu (2026) What is an informative replication? In: UNSPECIFIED. philsci-archive.pitt.edu/29781
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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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Constantin Späth @cspaeth.bsky.social · 16/09/2026
Great idea to incorporate undergraduate students in sports science as well to replicate studies! meta-student.com
meta-student.com
Meta-Student | Sports Science Replication Centre
Submit your final-year project data and earn co-authorship on peer-reviewed meta-analyses in sports science.
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Reposted by Constantin Späth
Framework for Open and Reproducible Research Training @forrt.bsky.social · 16/09/2026
Give your peer review to the journals that give back. Diamond open access journals don't charge authors to publish or readers to access; they run on community effort, for the community's benefit. Pledge one review a year and help sustain the research community. forrt.org/diamond-reviewer
Hexagonal badge with a diamond and the text "diamond reviewer". Below it, it says "Give your peer review to the journals that give back"
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Julia M. Rohrer @dingdingpeng.the100.ci · 14/09/2026
Did you know that there’s only a single letter separating an “idionomic clinical workflow” from an “idiotnomic clinical workflow”? I haven’t managed to write my screed about cluster analysis yet, here’s another blog post in the meantime: www.the100.ci/2024/10/28/i...
the100.ci
Idiographic Approaches in Psychology: Hold your horses
There have been persistent calls spurring psychologists to do more “idiographic” research, starting even before Peter Molenaar’s “Manifesto on Psychology as Idiographic Science”, which is already 20 y...
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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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Daniel Lakens @lakens.bsky.social · 11/09/2026
Journals should stop offering to store supplemental information. Everything that is shared with a paper should have it's own DOI, and live in a proper repository. As authors, link to files (e.g., Zenodo), but never add them as supplemental files.
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Saloni @scientificdiscovery.dev · 05/09/2026
By the way, if you enjoyed that, you might also enjoy Giving What We Can's version of the birth lottery. It's a random generator for people born today: www.givingwhatwecan.org/birth-lottery
givingwhatwecan.org
Birth Lottery
If you were reborn today, where would you land? And how would that change your life?
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Julia M. Rohrer @dingdingpeng.the100.ci · 27/08/2026
Psychological Science special issue call 📣 Ever had your research denigrated bc it's "only descriptive", "what's the mechanism though?" and "but what are the theoretical implications?" Now has come your time to shine. Send your best descriptive work! www.psychologicalscience.org/publications...
Psychological Science invites submissions that advance psychological science through careful description of psychological phenomena. Psychological research often focuses on explaining and predicting phenomena before we have a sufficiently detailed understanding of them. It can be difficult to build strong theories on incomplete empirical foundations of the phenomena themselves. Careful descriptive research helps establish shared empirical reference points developed around well-characterized phenomena. As such, descriptive research contributes to psychological science both by improving our understanding of the phenomena themselves and by providing a stronger foundation for future theory-building, explanation, and prediction.

We are interested in manuscripts that:

Deepen our understanding of psychological phenomena, including what they look like, how they vary, and how they unfold;
Draw on a variety of sources of evidence and methods, including qualitative, quantitative, and mixed-methods approaches; research conducted in naturalistic settings; intensive, longitudinal, or small-sample designs; and open or large-scale datasets; 
Provide necessary context for interpreting what is being described, including who is represented in the data, the settings and circumstances in which phenomena occur, and the broader social contexts in which they are situated; and/or
Make a substantive contribution to psychological science through the quality, depth, or significance of the description provided.
The deadline for submitting regular manuscripts is April 15, 2027. Registered Reports will also be considered. The deadline for submitting Stage 1 Registered Reports is November 15, 2026. Authors should indicate in the “Comments to Editor” box during submission that the manuscript is intended for the “Descriptive Research in Psychological Science” special issue.
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Sajedeh Rasti @sajedehra.bsky.social · 25/08/2026
Join us on October 8–9 at TU Eindhoven for two days of metascience, including a hands-on workshop, hackathons, research presentations, and keynote talks 🔸️Free to attend, but registration is required. Check out the program and details here: paulmeehlschool.github.io/workshops/sy...
paulmeehlschool.github.io
Paul Meehl Graduate School Meta Research Symposium 2026 | Paul Meehl Graduate School
October 8-9, 2026
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Beth Clarke @bethclarke.bsky.social · 21/08/2026
I’m hiring a PhD student to work with me on metascience in psychology at @zpid.bsky.social! The position is very open - could cover a wide range of topics/themes 🤸🏻‍♀️✨ If you have questions, please reach out! Applications are open until October 1st. leibniz-psychology.onlyfy.jobs/en/job/fyjwt...
leibniz-psychology.onlyfy.jobs
PhD in Psychological Meta-Science (m/f/d)
Become part of the open science movement The Leibniz Institute for Psychology Information (ZPID) in Trier (Germany) is an internationally recognized research-based psychology service center located in...
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Daniel Lakens @lakens.bsky.social · 17/08/2026
The fact that this view is even remotely controversial is a good illustration of what you could call 'mindless reform' - changes that are not improvements. Preregistration of secondary data analysis does not coherently follow from any philosophy of science. Just use an open lab notebook instead.
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Daniel Lakens @lakens.bsky.social · 15/08/2026
New Blog post: Which Data Repository Should you Use? In light of OSF closing down, I compare Zenodo, Dataverse, ResearchBox, PsychArchive, and local repositories on six important dimensions. If you want to know which to pick: It depends! daniellakens.blogspot.com/2026/08/whic...
daniellakens.blogspot.com
Which Data Repository Should You Use?
The Center for Open Science has announced that from November 16, 2026, no new projects can be created on the Open Science Framework. After F...
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Constantin Späth @cspaeth.bsky.social · 12/08/2026
A wise person doesn't just ask "What do I know?". A wise person will ask: "How do I know it? For whom might it be true? Under what conditions has it been true? What does my experience help me see? And what might what I think I know prevent me from seeing?" www.youtube.com/watch?v=t4sM...
youtube.com
Running Wise
YouTube video by Just Another Runner
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Reposted by Constantin Späth
Dan Quintana @dsquintana.bsky.social · 11/08/2026
This is also a good reminder that scientific infrastructure is not free. Very easy to forget when the service *itself* is free.
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Center for Open Science @cos.io · 11/08/2026
COS is announcing important changes to the Open Science Framework (OSF). OSF Projects—used for project collaboration, file mgmt, & storage—is being phased out as an active workspace over the next 6 months. This change does not affect persistence & accessibility of existing public projects. (🧵1/2)
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Peder M Isager @isager.bsky.social · 11/08/2026
In practice, I think I would normally recommend a sequential analysis approach with a max N set to the number of participants you can afford, but with the option of stopping early if power is high for the TST before max N is reached. lakens.github.io/statistical_...
lakens.github.io
10  Sequential Analysis – Improving Your Statistical Inferences
This open educational resource contains information to improve statistical inferences, design better experiments, and report scientific research more transparently.
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Constantin Späth @cspaeth.bsky.social · 08/08/2026
A little progress in sport and exercise psychology regarding sample sizes: www.sciencedirect.com/science/arti...
sciencedirect.com
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Katrin Weller @kwelle.bsky.social · 04/08/2026
*JOB* My group at @gesis.org has an open position: we are looking for a candidate to support the expansion of our Trusted Research Environment for providing access to sensitive research data: gesis.jobs.personio.de/job/2707934?...
gesis.jobs.personio.de
Research Infrastructure Specialist (Postdoc) for Trusted Research Environments (DSS-26) | Jobs at GESIS – Leibniz-Institut für Sozialwissenschaften
GESIS is one of the world's leading social science infrastructure facilities, supporting researchers at all levels of their research projects with expertise and infrastructure services. We help ensure...
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Daniel Lakens @lakens.bsky.social · 31/07/2026
I have a renewed appreciation for the statistical software packages Jamovi and JASP. Use them! In terms of reproducibility, they can't be beat. Archiving the data, code, and output in a single file is a genius move. Achieving the same reproducibility in R is very hard work.
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Lisa DeBruine @debruine.bsky.social · 29/07/2026
I agree! I also think that papers should originate on the lead author’s institutional repository and the only journals are overlay journals run by learned societies.
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Constantin Späth @cspaeth.bsky.social · 27/07/2026
link.springer.com/article/10.1...
link.springer.com
Affective memories of school physical education, life-phase timing of formative experiences, and adult sport and exercise participation: a quota-representative study in Germany - BMC Public Health
Background School physical education (PE) is one of the few contexts in which nearly all individuals encounter structured movement. We explored whether adults’ PE memories relate to sport and exercise...
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PsyArXivBot @psyarxivbot.bsky.social · 23/07/2026
Uncertainty in Psychology Research Articles: The Evolution of Its Frequency Between 2005 and 2020: osf.io/qz96d
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Center for Advanced Internet Studies @cais-research.bsky.social · 23/07/2026
📢 Jetzt bewerben! Für den Bereich Wissenschaftliche Politikberatung & Forschung suchen wir eine Person auf PostDoc-Level (all genders). 📍Bochum & mobiles Arbeiten 📄 Vollzeit, TV-L E13, unbefristet 📅 Bewerbungsfrist: 30.08.2026 🔗 stellenangebote.cais-research.de/de?id=e22ee7 #Stellenangebot #Bochum
Grafik zur Stellenausschreibung des CAIS: „Jetzt bewerben: Wissenschaftliche Politikberatung & Forschung (all genders)“. In der Mitte ist ein Symbol mit vernetzten Personen abgebildet. Unten steht die Bewerbungsfrist: 30. August 2026. Darunter der Hashtag #TeamCAIS. Oben rechts ist das CAIS-Logo zu sehen.
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Beth Clarke @bethclarke.bsky.social · 15/07/2026
If you had to guess, what proportion of social/personality psych articles include a claim that the findings can be applied in the real world?
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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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Jamie Cummins @jamiecummins.bsky.social · 14/07/2026
Today we launch the first stable release of RegCheck: v1.0.0. RegCheck makes it easier and quicker to compare study registrations to published papers for consistency - something we know is important in principle, but rarely done in practice. A 🧵 on what's new: regcheck.app
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
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Jamie Cummins @jamiecummins.bsky.social · 08/07/2026
WE ARE HIRING! Come work with us (me + @malte.the100.ci) on developing and validating RegCheck. PhD or postdoc applications welcome. Folk with backgrounds in meta-science, psychology, (pre)clinical trials, and/or economics are especially invited to apply. jobs.unibe.ch/job-vacancie...
jobs.unibe.ch
PhD Student/ Postdoc Position in Meta-Science - Universität Bern
Universität Bern is looking for PhD Student/ Postdoc Position in Meta-Science
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Constantin Späth @cspaeth.bsky.social · 07/07/2026
Powering a superiority trial is challenging: when the SESOI defines the null hypothesis, what superiority margin exceedance should the study be powered to detect? Are there any applied examples? @isager.bsky.social @lakens.bsky.social @jamessteeleii.bsky.social
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Lisa DeBruine @debruine.bsky.social · 25/06/2026
Tip for senior authors, too…
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Constantin Späth @cspaeth.bsky.social · 25/06/2026
Recommendation for all junior authors in the affect paradigm of exercise psychology: bsky.app/profile/cspa...
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JEP: Human Perception and Performance @jephpp.bsky.social · 25/06/2026
Tip for junior authors: A power analysis is only as good as the effect size you feed it. "Medium" is not a justification. Tell us whether your effect size comes from prior empirical work (justifying that choice) or from theory (e.g., the smallest effect you'd care to detect). #cogpsyc #AcademicSky🧪
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Kristoffer Magnusson @rpsychologist.com · 25/06/2026
New interactive blog! "Why Adjusted Regression Coefficients Are Less Descriptive Than They Look" rpsychologist.com/descriptive-...
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Daniel Lakens @lakens.bsky.social · 21/06/2026
Integrative experiments - where effects are tested across auxiliary assumptions - are a more useful tool than multiverse analysis and many analyst studies. If you like to ponder the philosophical basis of statistical procedures, you might enjoy this paper! osf.io/preprints/ps...
osf.io
OSF
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Daniel Lakens @lakens.bsky.social · 21/06/2026
New preprint: There is only one correct analysis. osf.io/preprints/ps... with @sajedehra.bsky.social and @mntunc.bsky.social We take a critical look at recent proposals for multiverse or many analyst procedures, and strongly argue that epistemic uncertainty should be reduced, not “embraced”. >
osf.io
OSF
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Constantin Späth @cspaeth.bsky.social · 04/06/2026
New Paper (open access): www.sciencedirect.com/science/arti...
sciencedirect.com
From arbitrary metrics to meaningful change: Empirical smallest effect sizes of interest for the Feeling Scale during exercise
Research addressing changes in affective valence during exercise is often difficult to interpret because such changes are typically expressed on arbit…
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Daniel Lakens @lakens.bsky.social · 10/06/2026
If you prefer to read open access texts, then read our more extensive overview (submitted to Meta-Psychology) here: osf.io/preprints/ps... I'm extremely proud of the excellent work Sajedeh is doing - she is an incredibly talented young scholar.
osf.io
OSF
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Z-curve @replicationindex.com · 09/06/2026
What are standardized standard errors and why are they useful but ignored? replicationindex.com/2026/06/08/h...
replicationindex.com
Hypothesis Testing and Estimation with Standardized Standard Errors - Replicability-Index
Inferential statistics in psychology lacks a unified practice. Debates about statistical inference tend to organize around a 2 × 2 structure: one dimension distinguishes frequentist from Bayesian appr...
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Daniel Lakens @lakens.bsky.social · 08/06/2026
With Deborah Mayo, Kent Staley, and Wendy Parker we are editing a special issue of Synthese on "Severity and Learning from Error": link.springer.com/collections/... Deadline for submissions is the 15th of December, 2026. If this is a topic that you are interested in, consider contributing!
link.springer.com
Severity and Learning from Error
This Topical Collection examines how inquiry learns from error by focusing on a basic principle of evidence in science, statistics, medicine, law, ...
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Chris Hanretty @chanret.bsky.social · 04/06/2026
but works in incognito mode!?
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Constantin Späth @cspaeth.bsky.social · 04/06/2026
New Paper (open access): www.sciencedirect.com/science/arti...
sciencedirect.com
From arbitrary metrics to meaningful change: Empirical smallest effect sizes of interest for the Feeling Scale during exercise
Research addressing changes in affective valence during exercise is often difficult to interpret because such changes are typically expressed on arbit…
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Daniel Lakens @lakens.bsky.social · 29/05/2026
If you are sad we haven't released a podcast for a while, and you'd like to hear me talk about coordination in science (and why it is such an important solution to many of the challenges we have been facing for decades), see my recent talk here: youtu.be/g8LFwyQsML8?...
youtu.be
Big Ideas Series - Daniël Lakens on Coordination in Science
Talk outline: In recent years scientists in many disciplines have had to raise the bar to improve the reliability of their findings. The increasing realization that fields should perform more…
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