The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

Study information

Seminar

Juan Masullo J., Assistant Professor at Leiden University’s Institute of Political Science, has been named a 2025 Harry Frank Guggenheim Distinguished Scholar. His research with Nicholas Barnes on public security policy preferences in Rio de Janeiro's favelas has been recognized for its innovative approach…

Andrew Hoffman (CADS), Mark Westmoreland (CADS) and Yasmin Ismail (CADS) have received a KIEM grant of € 10.000 for their project 'CARMA: Community Archive and Repository for Multimodal and Artistic Research'. The grant will be used to create a 'living laboratory' that helps researchers, data management…

Why should you create and use an ORCID? Here is the answer!

Why should you publish your data? ... and how?

If a society is to be secure, sustainable and resilient, conflicting interests must be reconciled. Researchers at Leiden University study the behaviour of individuals, groups and states in relation to this issue, and use their knowledge to promote equality within and between communities.

The Centre for Science and Technology Studies (CWTS) is a research institute at Leiden University working on improving how science is practiced and governed and how it serves society.

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What did psychology student Jessie learn while working at a psychiatric hospital in The Gambia? And why is Noman from Yemen now studying political science in Leiden? Thanks to donations from alumni, students have the opportunity to spend time abroad funded by a LUF grant. Jessie and Noman talk about…

South Korean smash hit Squid Game is on track to becoming the most successful Netflix production ever. The series is number one in over 90 countries. Professor and Korea expert Remco Breuker can see why South Korean pop culture is becoming so popular, also outside Asia.

Ukrainian Yana Rudenko lived through the Russian occupation of Bucha in March 2022 and thereafter came to Leiden to study. thereafter De Oekraïense Yana Rudenko (24) jaar heeft in maart 2022 de Russische bezetting van Boetsja meegemaakt en is daarna gaan studeren in Leiden.

The Dutch Tax and Customs Authority is planning to start enforcing income tax and contribution obligations again following a moratorium lasting several years. The tax authority is doing this in a move to combat sham self-employment; a dossier that continues to be a huge obstacle for the Dutch House…

Alzheimer’s disease and cancer are two examples of diseases that are related to malfunctioning cellular patterns. The examination of cell tissue, however, takes a lot of time and generates a lot of data. To make the analysis of data easier, Antonios Somarakis of the Data Science Research Programme (DSRP)…

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The main aim of the project is to collect and update on a regular basis bibliometric and patent indicators that can be used to underpin and inform analyses pursued at the European Commission (EC) to assess European and national scientific and technological performance.

In theory, the responsible conduct of research leads to greater trust in scientific findings, fosters a healthy academic culture in which scientists can flourish, and promotes a productive and mutually beneficial relationship between science and society. In practice, this is achieved by improving transparency…

The 22nd of march 2023, political scientist Lukas Spielberger will defend his dissertation ‘Lessons from Europe for the study of international bank cooperation’. He wrote his thesis about the cooperation of central banks during international financial crises: ‘central banks pay more attention to shared…

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

Our team is committed to the study of knowledge in its broadest sense, encompassing both ideas and practices in all its historical variety. We look at what people regarded as knowledge, how they created, collected, circulated and used it, also why it mattered to them, and how all this was embedded in…

Ionica Smeets is planning to give the prize money that she won with the Iris Medal, a prize for excellent science communication, to student projects.

Eveline Crone, Professor of Neurocognitive Developmental Psychology, has been awarded the NWO Spinoza Prize for her high-profile research on adolescent development. NWO announced the award on 16 June. What will Crone do with the award of 2.5 million euros?

At almost midway through, the “Stoeplanten” (Pavement Plants) citizen science project has been very successful. This research was initiated by Nienke Beets, who while working for the Science Communication and Society research group and Hortus Botanicus, gave her contribution to the Stoeplanten proje…

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Lecture

Festival

Many people work less after turning 60 which is not helping the economy. Egbert Jongen, Professor of Economics, will explore with his team how employers and policymakers can help older employees stay healthy and keep working, even after the statutory retirement age.

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Imagine getting a notification on your mobile phone with your personal code for impending mental health problems or even depression: yellow, orange, or red. Science fiction? Not for scientist Eiko Fried. 'There is a real chance we can prevent some mental health problems before they occur.' Want to participate…

The end of the year often means looking back with lists, overviews and stories. This combines nicely in a list of all the books published this year by various political scientists at Leiden University. Indeed, in terms of books, these scholars have certainly not been idle. A unique collection of stories,…

Lecture, Sociolinguistics & Discourse Studies Series

TikTok’s stricter age checks are a good move, says Bart Custers, Professor of Law and Data Science, in an opinion piece in ‘de Volkskrant’. But he warns of risks related to privacy and discrimination.