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Leonhard Held

@heldleonhard.bsky.social
211 followers 181 following 12 posts

Professor of Biostatistics at University of Zurich, Director UZH Center for Reproducible Science and Research Synthesis, Master Biostats Program Director, Steering committee Swiss Reproducibility Network (SwissRN)

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Reposted by Leonhard Held
Center for Reproducible Science and Research Synthesis - UZH @crs-uzh.bsky.social · 23/09/2026
🤖 AI, Open Science & Research Integrity: Join our next CRS lecture on 29 September. Wolfgang Ernst & Matt Spick will explore challenges for research integrity in a changing research landscape. 📅 18:15–20:00📍UZH Main Building, KOL-F-118 🌍 Open to all Find out more: crsuzh.pages.uzh.ch/fake-science/
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Reposted by Leonhard Held
Center for Reproducible Science and Research Synthesis - UZH @crs-uzh.bsky.social · 12/08/2026
🔎 Fake Science — Isolated Cases or a Systemic Problem? Join the CRS public lecture series exploring research integrity, misconduct & the trustworthiness of research. 📅 First lecture: 15 Sept 2026 🗓 Every second Tuesday, 18:15–20:00 🗣 English | 🌍 Open to all Find out more: www.uzh.ch/de/events/rv...
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Reposted by Leonhard Held
Tobias Dienlin @tobiasdienlin.com · 04/08/2026
This fall semester, there's a cool lecture series at UZH titled "Fake Science". Presenters include @yesuncomm.bsky.social, @ianhussey.mmmdata.io and @heldleonhard.bsky.social. Takes place every second Tuesday at 6.15 pm, open to the public. More information: www.uzh.ch/de/events/rv...
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Reposted by Leonhard Held
Ian Hussey @ianhussey.mmmdata.io · 29/05/2026
Are authors accidentally-on-purpose using Dryad to open-wash compliance with journal data policies while not actually sharing data?
octopus.ac
Detection arbitrage: the Dryad data deposition dodge - Octopus | Bu...
IntroductionThe linked Hypothesis (Spick, 2026) predicted that a non-trivial proportion of published manuscripts using the Dryad repository for Data Availability would reference DOIs failing to res...
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Reposted by Leonhard Held
Research on Research Institute (RoRI) @rorinstitute.bsky.social · 29/04/2026
🇯🇵 Metascience is gaining serious momentum in Japan. This new report on the Tokyo Metascience Meetup 2026 sheds light on how the field is being formally integrated into policy: researchonresearchinstitute.substack.com/p/the-enthus...
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Reposted by Leonhard Held
Research on Research Institute (RoRI) @rorinstitute.bsky.social · 28/04/2026
“If we don’t change our approach, we are probably 18 months away from the system collapsing entirely." RoRI’s @jameswilsdon.bsky.social tells @resprofnews.bsky.social that agentic AI is pushing grant systems to a breaking point: www.researchprofessionalnews.com/rr-news-uk-r...
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Reposted by Leonhard Held
Charles Piller @charlespiller.bsky.social · 04/03/2026
I find it hard to be shocked by such admissions, but this one is pretty intense: A medical journal says the case reports it has published for 25 years are, in fact, fiction via @katetravis.bsky.social retractionwatch.com/2026/03/03/c...
retractionwatch.com
A medical journal says the case reports it has published for 25 years are, in fact, fiction
A Canadian journal has issued corrections on 138 case reports it published over the last 25 years to add a disclaimer: The cases described are fictional. Paediatrics & Child Health, the journal…
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Reposted by Leonhard Held
eLife @elife.bsky.social · 22/02/2026
Openness means more than access. That's why we encourage submissions of Replication Studies. Learn about publishing your replication study with us in our author guide: buff.ly/rcI0oAY
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Reposted by Leonhard Held
Swiss Reproducibility Network @swissrn.bsky.social · 30/07/2025
Our SwissRN Academy offers a free "Early Career Reviewer Workshop" at the University of Bern. Early career researchers will gain valuable experience in scientific peer review. Date: September 11, 2025 (10:00 - 16:00) Registration: Register by August 25 via forms.office.com/e/V3QEAFbN84
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Joris Frese @fresejoris.bsky.social · 21/07/2025
🇨🇭🇪🇺 Just Published in Royal Society Open Science! A scoping review on metrics to quantify reproducibility: royalsocietypublishing.org/doi/10.1098/... Ever conducted a replication and pondered when/how to conclude if it was (un)successful? We have just the paper for you (led by Rachel Heyard)! 1/14
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SHARE CTD @sharectd.bsky.social · 19/05/2025
🎉 Big news for clinical research! SPIRIT2025 just dropped, adding an Open Science section & a new Item No. 6 on data sharing. This pushes transparency in trials—where & how de-identified data, code, & materials will be accessible. Check it: www.consort-spirit.org #OpenScience #ClinicalTrials
consort-spirit.org
Home | consort-spirit.org
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Leonhard Held @heldleonhard.bsky.social · 14/05/2025
Perplexing!
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Reposted by Leonhard Held
Lonni Besançon @lonnibesancon.bsky.social · 12/05/2025
Plenty of tortured phrases (arxiv.org/abs/2107.0...) in this #IEEE paper. ieeexplore.ieee.org/... My pubpeer report: pubpeer.com/publicat...
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Graham Kendall @grahamkendall.bsky.social · 11/05/2025
UHaveIntegrity: A Strengths-Based Approach to Academic Integrity at the University of Calgary buff.ly/yRXDrNS
buff.ly
UHaveIntegrity: A Strengths-Based Approach to Academic Integrity at the University of Calgary
The #UHaveIntegrity campaign at the University of Calgary reframes academic integrity by focusing on students’ existing ethical foundations rather than viewing them as potential cheaters. It …
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Reposted by Leonhard Held
Crossref @crossref.bsky.social · 25/03/2025
Transparency in research takes another step forward. Join our April 2, 2025 webinar to explore Retraction Watch data in Crossref. Find out how it works and why it matters. Register: tinyurl.com/tbf8w6u7 #Crossref #publishing #research
crossref webinar
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Reposted by Leonhard Held
ReproducibiliTea Journal Club Geneva @reprotea-geneva.bsky.social · 18/03/2025
Hey there! We are ReproducibiliTea Geneva👋 As part of the @reproducibilitea.org community, we meet regularly at the University of Geneva to discuss all things open and reproducible science, in a relaxed atmosphere over a cup of tea🫖📚! Feel free to get in touch!
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Reposted by Leonhard Held
Elisabeth Bik @elisabethbik.bsky.social · 13/03/2025
Retraction @plosone.org - paper with authors from Ghent University. "All authors either did not respond directly or could not be reached." Does any journalist in Belgium want to write about this? It's so strange that none of the authors responded. pubpeer.com/publications...
Figure 2B from the paper in question, showing several Western blot panels (they look like light grey rectangles, some of which have a fat or thinner black horizontal stripe in the middle). I have marked some of these rectangles with boxes of the same color, highlighting those that look unexpectedly similar.Figure panels from Figure S2, from the supplemental. On the left a blot or gel, showing dark background with white bands. On the right a more classical western blots showing light grey background with dark grey horizontal stripes. In both panels I have highlighted lanes that look remarkably similar, with colored boxes.
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Timothy Caulfield @caulfieldtim.bsky.social · 13/03/2025
🚨Huge issue! Needed: Quality > Quantity Scientists see signs of trouble with quality at the biggest scientific journals www.wsj.com/business/med... "Some of the work that has been published is so seriously flawed that it is not credible that it underwent any meaningful form of peer review."
wsj.com
Scientists Take on Scholarly Journals With Walkouts, Scathing Letters and Delistings
Some scientists say the for-profit industry’s fast growth makes it harder to police fraud and low-quality work.
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Leonhard Held @heldleonhard.bsky.social · 13/03/2025
Very pleased to see #reproducibility #transparency #integrity #openscience emphasized to ensure trust in science in Switzerland and beyond All part of the @swissrn.bsky.social strategy: www.swissrn.org/contents/com... Truth and trust are pillars for research www.horizons-mag.ch/2025/03/06/t...
horizons-mag.ch
Truth and trust are pillars for research
Horizons - Issue 144
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Einstein Foundation Berlin @einsteinberlin.bsky.social · 13/03/2025
🕓Today at 4pm (CET): Join the 2024 #EinsteinFoundationAward winners' colloquium on scientific integrity with @elisabethbik.bsky.social, @brandonstell.bsky.social from @pubpeer.com, and @helenajambor.bsky.social and Christopher Schmied from PixelQuality via Livestream: www.youtube.com/live/ZZ5R8CG...
youtube.com
2024 Einstein Foundation Award Winners Colloquium
YouTube video by Einstein Foundation Berlin
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Leonhard Held @heldleonhard.bsky.social · 10/03/2025
Highly recommended!
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Leonhard Held @heldleonhard.bsky.social · 27/02/2025
Welcome to Zurich, Tobias! Looking forward to interact on Open and Reproducible Science
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Leonhard Held @heldleonhard.bsky.social · 25/02/2025
Tired of fixed effect and random-effects meta-analysis? Check out our revised manuscript on p-value combination methods for meta-analysis: arxiv.org/abs/2408.08135
arxiv.org
A comparison of combined p-value functions for meta-analysis
P-value functions are modern statistical tools that unify effect estimation and hypothesis testing and can provide alternative point and interval estimates compared to standard meta-analysis methods, ...
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Leonhard Held @heldleonhard.bsky.social · 17/02/2025
"The most expensive, most widespread example of catastrophic research fraud in the history of modern science?" Listen to this, "if you love science and you want to see science done well". podcastaddict.com/plain-englis...
podcastaddict.com
Plain English with Derek Thompson - Fraud, Scandal, and Failure in the Fight Against Alzheimer's Disease
Listen to Plain English with Derek Thompson - Fraud, Scandal, and Failure in the Fight Against Alzheimer's Disease by The Ringer on Podcast Addict. Why is it so hard to find a cure for Alzheimer’s? A simple answer is that the brain and its disorders are complicated. But as today’s guest, Charles Piller, writes, there’s another, more sinister factor at play. His new book, 'Doctored,' traces an incredible, true story of fraud, arrogance, and tragedy in the quest to cure Alzheimer’s.In the last few years, some of the most
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Reposted by Leonhard Held
Elisabeth Bik @elisabethbik.bsky.social · 15/02/2025
ICYMI: Second paper by Nobel laureate Thomas Südhof retracted @retractionwatch.com retractionwatch.com/2025/02/14/i...
retractionwatch.com
ICYMI: Second paper by Nobel laureate Thomas Südhof retracted
Thomas Südhof A 2017 paper coauthored by Nobel laureate Thomas Südhof has been retracted.  The article, “Conditional Deletion of All Neurexins Defines Diversity of Essential Synaptic Organizer…
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Leonhard Held @heldleonhard.bsky.social · 14/02/2025
The Swiss Reproducibility Network (SwissRN) is now on Bluesky! Make sure to follow @swissrn.bsky.social
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Reposted by Leonhard Held
eLife @elife.bsky.social · 04/02/2025
We’re pleased to join the UK Reproducibility Network (@ukrepro.bsky.social) as a stakeholder in support of a more open, transparent and reproducible research culture. Find out more:
ukrn.org
UKRN welcomes eLife and Hidden REF as new stakeholders | UK Reproducibility Network
Feb 4, 2025 | News
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Dorothy Bishop @deevybee.bsky.social · 21/12/2024
Are @zbmed.bsky.social aware of the negative reaction on social media to their just-announced contract with MDPI. There's a great many red flags they seem to have missed, e.g. deevybee.blogspot.com/2024/08/gues... deevybee.blogspot.com/2024/02/the-... + @hansonmark@bsky.social's account below
deevybee.blogspot.com
My experience as a reviewer for MDPI
Guest post by  René Aquarius, PhD Department of Neurosurgery Radboud University Medical Center, Nijmegen, The Ne...
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Ondrej Zika @ondrejzika.bsky.social · 20/12/2024
Why probability probably doesn’t exist (but it is useful to act like it does) - by D. Spiegelhalter www.nature.com/articles/d41... A great article highlighting the subjective nature of uncertainty, particularly relevant to our thinking about the nature of anxiety.
nature.com
Why probability probably doesn’t exist (but it is useful to act like it does)
All of statistics and much of science depends on probability — an astonishing achievement, considering no one’s really sure what it is.
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Tanja Pyhäjärvi @pyhatanja.bsky.social · 16/12/2024
Big news from Finnish publication forum. Almost all MDPI and Frontiers journals will be downgraded to level 0 and thus are not considered as properly peer reviewed trustworthy scientific journals. julkaisufoorumi.fi/en/news/chan...
julkaisufoorumi.fi
Changes to the classification
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EQUATOR Network @equatornetwork.bsky.social · 13/12/2024
ICYMI from earlier in 2024: Reporting on data sharing: executive position of the EQUATOR Network published in the @bmj.com www.bmj.com/content/386/... #transparency #researchintegrity #datasharing #openscience #codesharing #reproducibility #metascience
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Stephanie M. Lee @stephaniemlee.bsky.social · 13/12/2024
"But 60 times 7,000 is not 42,000. It is 420,000." whoops! nationalpost.com/news/canada/...
nationalpost.com
How a simple math error sparked a panic about black plastic kitchen utensils
A study warned that people were being exposed to a toxic chemical from kitchen utensils. But the researchers misstated the safe daily limit
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Health Nerd @gidmk.bsky.social · 01/12/2024
Another day, another retraction. I complained about this article to the journal in June 2023 - I've been told the first time the editors were notified about it was way back in 2021: obgyn.onlinelibrary.wiley.com/doi/10.1002/...
obgyn.onlinelibrary.wiley.com
OBGYN
Click on the article title to read more.
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Elisabeth Bik @elisabethbik.bsky.social · 26/11/2024
Trial of Controversial Alzheimer’s Drug Halted After Disappointing Results Cassava Sciences said that its drug did not significantly reduce cognitive decline in 1,900 people with mild to moderate Alzheimer’s disease. @teddyrosenbluth.bsky.social for @nytimes.com www.nytimes.com/2024/11/25/h...
nytimes.com
Trial of Controversial Alzheimer’s Drug Halted After Disappointing Results (Gift Article)
Cassava Sciences said that its drug did not significantly reduce cognitive decline in 1,900 people with mild to moderate Alzheimer’s disease.
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