This research paper was requested by the European Parliament's Committee on Civil Liberties, Justice and Home Affairs. It was published by the International Centre for Counter-Terrorism (ICCT) in The Hague. Leiden University is one of the participating institutes in this publication and our researcher…

Maarten Aalbers was invited as a guest speaker by the University of Bergen (Norway) to present his views on the joint application of state aid law and free movement law concerning the adoption of sugar taxes.

After a process of more than two decades, the new Greek-Dutch dictionary was presented on Wednesday 5 June. University lecturer Lucien van Beek acted as manager of this project headed by Ineke Sluiter for the last nine years. He is also one of its editors-in-chief.

'I belong here.' This is what the young Jewish law student Hetty Koster felt when she attended the memorable protest speech given by Professor Cleveringa on 26 November 1940. She managed to survive the war by going into hiding. She married Dolf Cohen, later Rector Magnificus of Leiden University, and…

The Embassy of Ireland in the Netherlands and Leiden University's GTGC proudly presented the joint event ‘Building the League of Nations and the International Labour Organisation’.

On 26 June 2025, Melanie Fink delivered a presentation titled 'Good Administration in the Age of AI: Explanation Rights and Human Oversight under EU Law' at the European Ombudsman.

Gianclaudio Malgieri's paper entitled 'The unfair side of Privacy Enhancing Technologies: addressing the trade-offs between PETs and fairness', coauthored with Alessandra Calvi from Vrije Universiteit Brussel and Dimitris Kotzinos from Paris Cergy University, is set to be presented at this week's prestigious…

With Ad Putter, Sjoerd Levelt and Anne-Louise Avery. Based on William Caxton’s bestselling 1481 English translation of the Middle Dutch, but expanded with new interpretations, innovative language and characterisation, this edition is an imaginative retelling of the Reynard story. With its themes…

On 9 January 2020, Christa Tobler gave a presentation which was followed by a discussion, which was announced as follows:

On 6 October 2018 Maarten Aalbers presented the first findings of a research paper, he is currently co - writing with Dr. Ben Van Rompuy, at the Vrije Universiteit in Brussels.

The Centro de Estudos Internacionais at Instituto Universitário de Lisboa (ISCTE-IUL) will host the

The group Clinical Neurodevelopmental Sciences has expertise in individual differences in child development, in particular the development of psychopathology, ranging from mild to severe neurodevelopmental disorders.

Effects of maternal smoking, premature birth, intra-uterine growth retardation and asphyxia on child development.

Fokelien Kootstra defended her thesis on 23 April 2019

A growing global concern is that automated recognition systems may exacerbate and reinforce existing biases that different societies have with respect to gender, age, race, and sexual orientation. Questions around the consequences of automated gender recognition are particularly poorly understood and…

In the studies described in this study, we introduce a novel ex vivo human skin barrier repair model. To develop this, we removed the upper layer of the skin, the stratum corneum (SC) by a reproducible cyanoacrylate stripping technique.

Throughout the history of computer science, a major challenge has been how to assert that software is free of bugs and works as intended. Software bugs can lead to serious negative impacts on any software system. Throughout the main body of the thesis, we implemented a series of studies on exploring…

The Oxford Handbook of Dutch Politics provides a comprehensive longitudinal overview of the state of the art of academic research on the Dutch political system: its origins and historical development, its key institutions, main fault lines, pivotal processes, and key public policy dynamics. In each…

-

It is essential for researchers to be able to obtain independent research funding in order to advance in their career.

In this article, Jaroslaw Kantorowicz and his coauthors analyse how recent political changes reshaped Poland’s Constitutional Tribunal and why this transformation provides important insights into contemporary democratic backsliding in Europe.

-

It is essential for researchers to be able to obtain independent research funding to advance in their careers.

Why does one person radicalize to involvement in terrorist violence within a group-based context, while another engages in this form of violence alone?

This study documents and translates the Saa (Zapotec) cultural heritage of the Bene’ Ya’a/En’ne I’ya peoples, the Zapotec inhabitants of the Sierra Norte of Oaxaca.

Here you find the curriculum of the master's specialisations of Health, Medical and Neuropsychology.

What role should the university play in the climate crisis?

The expedition commanded by Nicolas Baudin to Tenerife, Mauritius, Australia, Timor and South Africa in 1800-1804 is fully researched in regard to ornithology.

Underneath you will find more information on how the university works.

FitDis! is designed to ease the determination of binding energy and oligomeric state of coiled coil peptides. It allows direct fitting of concentration dependent thermal peptide unfolding curves measured for instance by CD–spectroscopy.

Rembrandt & Leiden University: The Bigger Picture commemorates the 444th anniversary of Leiden University and the 2019 Rembrandt Year. Our special thanks go to Germanisches Nationalmuseum (Nuremberg), The Leiden Collection (New York), Museum De Lakenhal (Leiden), Mauritshuis (The Hague), Rijksmuseum/Musée…

A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.

The starting hypothesis of the project is that secrecy is not always inimical to democratic governance as conventional wisdom has it.

On 14 January 2021, Joost Westerweel defended his thesis 'Lokale democratische innovatie'. The doctoral research was supervised by Prof. G. Boogaard and Prof. M.J. Cohen.

The Cognitive Psychology Unit is organized as follows:

The focus of the research lies in the approach of reducing, denying, or taking away essential elements of music making in order to let the musician become theatrical.

LUCIS is directed by Nathal Dessing, who is advised by a steering committee.

This collection of essays details the political life of one of the most prominent and gifted American statesmen of the twentieth century. From his early training in international law to his five terms in the US Senate, J. William Fulbright (1905--1995) had a profound influence on US foreign policy,…

What drives the behaviour of accountability forums?

Education for professionals. Leiden University offers a wide range of courses to boost your career, learn new skills, or broaden your knowledge.

Fieldwork is a crucial part of the learning process for students in the Faculty of Archaeology. This includes both fieldwork aimed at collecting archaeological data and materials as well as fieldwork for heritage studies. The Faculty has established a specific centre of expertise to further shape these…

The master's specialisation in Sociology of Policy in Practice provides academic and professional skills to independently design and execute research projects within and outside organisations.

ENPAIR, the European Network on Psychoeducational Assessment, Intervention and Rehabilitation, has its founding roots in Europe, but brings together scientific researchers and evidence-based working practitioners from countries all over the world.

This research project addresses the ethical challenges and legal gaps regarding the operations of MNCs in conflict zones.

As part of the process of safeguarding the quality of our research, our institutes are evaluated regularly by a committee of external experts.

The strategy of the Faculty Governance and Global Affairs

Professional courses, master’s programmes and a dual PhD programme.

The fifth edition of the Owada Chair Symposium, that was held in Leiden on 14 and 15 October 2025, highlighted the law and politics of international criminal justice.

Didactics