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CWTS | Leiden University
@cwts.nl
370 followers 160 following 82 posts
Centre for Science and Technology Studies (CWTS) @unileiden.bsky.social
Engagement & Inclusion | Evaluation & Culture | Information & Openness

🌐 cwts.nl
📌 Leiden, the Netherlands
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Reposted by CWTS | Leiden University
ludowaltman.bsky.social
Very proud of @eleonoradagiene.bsky.social. It was a great pleasure to supervise her PhD research!
cwts.nl CWTS | Leiden University @cwts.nl · 4d
🎓 Last week, Dr. Eleonora Dagiene successfully defended her PhD thesis titled 'Quantitative research assessment and its unintended consequences' at Leiden University.

Congratulations on this amazing achievement!! 🥂

www.universiteitleiden.nl/en/news/2025...
Congratulations, Dr. Eleonora Dagienė!
On 30 October 2025, Eleonora Dagienė successfully defended her PhD thesis at Leiden University, titled ‘Quantitative Research Assessment and its Unintended Consequences’.
www.universiteitleiden.nl
November 7, 2025 at 11:08 AM
cwts.nl
🎓 Last week, Dr. Eleonora Dagiene successfully defended her PhD thesis titled 'Quantitative research assessment and its unintended consequences' at Leiden University.

Congratulations on this amazing achievement!! 🥂

www.universiteitleiden.nl/en/news/2025...
Congratulations, Dr. Eleonora Dagienė!
On 30 October 2025, Eleonora Dagienė successfully defended her PhD thesis at Leiden University, titled ‘Quantitative Research Assessment and its Unintended Consequences’.
www.universiteitleiden.nl
November 7, 2025 at 10:16 AM
Reposted by CWTS | Leiden University
leidenmadtrics.bsky.social
🌎 What does the withdrawal of the US from UNESCO mean for Open Science and Open Science infrastructure? While much is still unclear, @loubezuidenhout.bsky.social and Jon Verriet from @unesconl.bsky.social argue that the implications could be profound.

www.leidenmadtrics.nl/articles/the...
The withdrawal of the US from UNESCO: What does this mean for Open Science?
The withdrawal of the US from UNESCO and US legislation being increasingly at odds with Open Science values raises concerns regarding Open Science infrastructure in the US. While much is still unclear...
www.leidenmadtrics.nl
November 5, 2025 at 2:02 PM
Reposted by CWTS | Leiden University
ludowaltman.bsky.social
Work by @rorinstitute.bsky.social project team has been peer reviewed openly on the @metaror.bsky.social platform.

Nice demonstration of the commitment of RoRI colleagues to MetaROR's publish-review-curate model!
metaror.bsky.social MetaROR @metaror.bsky.social · 6d
How are national systems for assessing publicly funded research evolving? That's the question our latest article poses.

Reviewers consider the work "valuable and timely", noting its relevance to reform initiatives like @coarassessment.bsky.social

👇 Read the assessment, reviews & full article here
A new typology of national research assessment systems: continuity and change in 13 countries
metaror.org
November 4, 2025 at 9:20 PM
cwts.nl
📣 This Friday, we will have another seminar: @nathanaelsheehan.bsky.social from TU Munich will give a talk on 'Metascience of Past, Present, & Future'.

🎧 Make sure to join!

📅 Friday, 7.11.2025 | 3:00-4:15 PM (CET)
📌 Online & at CWTS

www.universiteitleiden.nl/en/events/20...
Metascience of Past, Present, & Future
This talk traces the trajectory of metascience from its origins in the Unity of Science movement to its contemporary form as an empirical reform project. I argue that while its methods and objects hav...
www.universiteitleiden.nl
November 4, 2025 at 12:02 PM
cwts.nl
📰 Opinion piece (in Dutch) in the Dutch newspaper Het Financieele Dagblad by our scientific director @ludowaltman.bsky.social. Reacting to an earlier opinion piece, he argues for why universities are right to step away from the big commercial university rankings 👇
November 3, 2025 at 1:22 PM
Reposted by CWTS | Leiden University
ludowaltman.bsky.social
Very much looking forward to my participation in this webinar on Wednesday, together with four impressive colleagues: Anna Hatch, @rnls.bsky.social, @catmacos.bsky.social and @richardsever.bsky.social

@cwtsnl.bsky.social @metaror.bsky.social
alpsp.bsky.social ALPSP @alpsp.bsky.social · 20d
TWO WEEKS TO GO: 'Preprints on the Rise: Trust, Trends, and What's Next', 5 November

Discover how preprints are reshaping scholarly communication, research integrity, and publishing in this forward-looking member-only webinar.

👉 buff.ly/QMMNC6B
November 2, 2025 at 9:02 PM
Reposted by CWTS | Leiden University
barcelonadori.bsky.social
1/2 📊 @cwtsnl.bsky.social published the 2025 release of its Leiden Ranking Open Edition: a real step toward open research information.
Built on OpenAlex, it:
• Uses transparent, reusable data
• Includes national & regional publishing (not only “core” journals)...
October 30, 2025 at 12:46 PM
cwts.nl
📄 New scoping review: "The Contributions of Open Science to Research Culture", a collaboration between the Know Center and CWTS that was commissioned by @scienceeurope.org.

📚 Find out more in the news item on our website 👉 tinyurl.com/bdd6jw96

@alexrushforth.bsky.social
October 30, 2025 at 1:01 PM
Reposted by CWTS | Leiden University
ludowaltman.bsky.social
Very proud of the improvements made by the Leiden Ranking team to the Open Edition of the ranking.

This demonstrates our commitment at CWTS to @barcelonadori.bsky.social and the open research information transition.

Great work by @neesjanvaneck.bsky.social and the rest of the team!
October 29, 2025 at 5:59 PM
Reposted by CWTS | Leiden University
polecopub.bsky.social
Commercial vs. #opendata for reseach information in its purest form. Very selective vs. inclusive (publications, universities). #researchassessment
October 29, 2025 at 6:10 PM
cwts.nl
📊 The CWTS Leiden Ranking 2025 is online! 🎉 This time, we have released not one, but two editions: the Traditional Edition and the Open Edition. www.leidenranking.com
CWTS Leiden Ranking
The CWTS Leiden Ranking offers important insights into the scientific performance for major universities worldwide. Select your preferred indicators, generate results, and explore the performance of u...
www.leidenranking.com
October 29, 2025 at 12:37 PM
cwts.nl
🏛️ New call for proposals and report by the King Baudouin Foundation, with contribution by CWTS to identify research on mental health, areas of strong research activity and potential gaps:

Call for proposals 👉 tinyurl.com/n6c3dbva
Full report 👉 tinyurl.com/37uxdsaz
Methods 👉 tinyurl.com/5hxpyznh
Towards a paradigm shift in mental health care
kbs-frb.be
October 28, 2025 at 1:49 PM
Reposted by CWTS | Leiden University
jo-dudek.bsky.social
📰 Quantitative research on science communication requires suitable data. When it comes to academic press releases, that data is scarce. In a new paper, we introduce a dataset of more than 500,000 press releases published on @eurekalert.bsky.social. doi.org/10.1038/s415...
An open dataset of EurekAlert! press releases for science communication research - Scientific Data
Scientific Data - An open dataset of EurekAlert! press releases for science communication research
doi.org
October 27, 2025 at 10:41 AM
Reposted by CWTS | Leiden University
leidenmadtrics.bsky.social
🤝 Amid international concerns over the China Scholarship Council, our newest blog's authors Qianqian Xie & Alfredo Yegros look at the data. They reveal trends, collaborations and broader implications, and ultimately argue for a "balanced, evidence-based approach".

👇 Read it now on Leiden Madtrics
Balancing opportunity and risk: rethinking China Scholarship Council programmes amid geopolitical tensions
Amid international concerns over the China Scholarship Council (CSC), especially regarding academic freedom and sensitive knowledge transfer, our study analyses CSC-funded research (2009–2021) to reve...
www.leidenmadtrics.nl
October 23, 2025 at 9:09 AM
Reposted by CWTS | Leiden University
digital-science.com
🔗 See the dashboard here: public.tableau.com/app/profile/...

This work is part of the UnMiSSeD (Understanding Misinformation and Science in Societal Debates) research project.

It's led by Dr Vincent Traag @vtraag.bsky.social from CWTS | Leiden University @cwtsnl.bsky.social

2/8
public.tableau.com
October 22, 2025 at 2:33 PM
Reposted by CWTS | Leiden University
digital-science.com
Altmetric data in action: A new public dashboard highlights misinformation in #SocialMedia about #COVID19 & scientific research.

Using @altmetric.com data for 400 million+ X/Twitter posts, the UnMiSSeD dashboard has assigned a “misinformation score” to various elements in the X posts.

1/8
October 22, 2025 at 2:33 PM
cwts.nl
📣 Special seminar on 'Perspectives on the evaluation of science', with Emanuel Kulczycki, @alesiazuccala557.bsky.social, and Jochen Gläser.

🎧 Make sure to join!

📅 Friday, 31.10.2025
🕐 1:00-3:00 PM (CET)
📌 Online & at CWTS

More information 👉 www.universiteitleiden.nl/en/events/20...
Special Seminar: Perspectives on the evaluation of science
We are delighted to host a special seminar featuring the members of Eleonora Dagiene’s external PhD committee, held the day after her PhD defence. This session will bring together three distinguished ...
www.universiteitleiden.nl
October 22, 2025 at 11:06 AM
Reposted by CWTS | Leiden University
ludowaltman.bsky.social
Also very nice to see the value of the open peer review organized by @cwtsnl.bsky.social for the STI 2023 conference!

www.leidenmadtrics.nl/articles/pre...
Preprinting and open peer review at the STI 2023 conference: Evaluation of an open science experiment
At the STI 2023 conference, an experiment was performed with a more open approach to publication and peer review of conference submissions. In this post, the conference organisers present an evaluatio...
www.leidenmadtrics.nl
October 19, 2025 at 4:15 PM
Reposted by CWTS | Leiden University
leidenmadtrics.bsky.social
@crossref.bsky.social is a crucial source of open bibliographic metadata for articles published in scientific journals, but how complete is its metadata on preprints?

In our latest blog post, @neesjanvaneck.bsky.social and @ludowaltman.bsky.social investigate

👇 Read it now on Leiden Madtrics
Crossref as a source of open bibliographic metadata for preprints
Crossref is a crucial source of open bibliographic metadata for articles published in scientific journals. Importantly, however, Crossref can also serve as a source of bibliographic metadata for prepr...
www.leidenmadtrics.nl
October 16, 2025 at 1:57 PM
Reposted by CWTS | Leiden University
opensciencenl.bsky.social
Get involved in an Open Science Monitor for the Netherlands! A consortium with @cwtsnl.bsky.social and Dialogic, funded by us, is developing a framework and dashboard in co-creation with the community. Your input is highly appreciated: www.openscience.nl/en/news/deve...
Development of an open science monitor for the Netherlands underway | Open Science NL
The development of a national open science monitor for the Netherlands has officially started with a project meeting held in Leiden on 9 October. With funding from Open Science NL, the consortium comprising CWTS and Dialogic will develop a robust, context-specific framework for monitoring and evaluation, as well as a prototype dashboard to visualise such an open science monitor.
www.openscience.nl
October 16, 2025 at 8:43 AM
Reposted by CWTS | Leiden University
leidenmadtrics.bsky.social
📄 We have a new blog post! Read it below 👇
petertarras.bsky.social Peter Tarras @petertarras.bsky.social · 27d
Andrea Reyes Elizondo @altibel.bsky.social and I have responded to a blog, recently published on @leidenmadtrics.bsky.social, which argued that using AI responsibly in research means being transparent about it. We object that supposed transparency obscures more fundamental ethical questions.
Why AI transparency is not enough
Recently, a taxonomy to disclose the use of generative AI (genAI) in research outputs was presented as an approach that creates transparency and thereby supports responsible genAI use. In this post we...
www.leidenmadtrics.nl
October 15, 2025 at 10:44 AM
Reposted by CWTS | Leiden University
rorinstitute.bsky.social
🌟 RoRI is growing! We’re delighted to welcome nine new colleagues across UCL and CWTS (Leiden University), strengthening our work in metascience, AI, research assessment, and science policy.

Read more about our new team members and their work here: researchonresearch.org/rori-welcome...
October 15, 2025 at 11:24 AM
Reposted by CWTS | Leiden University
vtraag.bsky.social
📢 New reviewed preprint, published by @elife.bsky.social at doi.org/10.7554/eLif.... We study two effects in science funding across 14 different funding programmes from 6 research funders across Europe and North America: (1) The Matthew effect; and (2) and the early-career setback effect.

🧵1/8
Illustration of the Matthew effect and the early-career setback effect. An academic, say Alice, first applies for early-career funding in 2015. She received early-career funding, and goes on to reapply for later-career funding in 2020. According to the Matthew effect, the chances of Alice receiving later-career funding is higher when she received early-career funding. Alice showed a high Mean Field Citation Rate (MFCR) before receiving her early-career funding, and similarly a high MFCR in between the early-career and later-career applications. According to the early-career setback effect, had she instead not received funding, her "Between" MFCR would have been higher. We not only study the "Between" MFCR, we also study the MFCR after the early-career application ("Post (early)") and after the later-career application ("Post (later)").
October 15, 2025 at 8:56 AM
cwts.nl
🎓 Congrats to @utawehn.bsky.social on her inaugural lecture at @unileiden.bsky.social on Monday!

💡 She highlighted the importance of long-term collaboration between civil society, government & academia in #CitizenScience.

📖 Full lecture 👉 scholarlypublications.universiteitleiden.nl/handle/1887/...
October 15, 2025 at 10:25 AM