In this article, Bart Schuurman and Sarah Louise Carthy explore the distinctions between radicalised individuals and the general population

Childhood sexual abuse is a common problem, with approximately one in five girls and one in 13 boys worldwide experiencing some form of sexual abuse before the age of 18. Despite its high prevalence, many individuals remain silent about these experiences, often delaying disclosure for years, with one…

In this publication, the authors explore the reality of accessing and interviewing hard-to-reach populations such as extremists and terrorists

Each year, the Leiden University Student Platform (LUS) presents the Leiden Education Prize.

This article provides an in‐depth assessment of lone actor terrorists’ attack planning and preparation.

Promotor: P. Stevenhagen, Co-promotores: B. de Smit, F. Andreatta

In this thesis we classify the pairs (p,G), where p is a prime number and G is a finite p-group possessing an intense automorphism, i.e. an automorphism that sends each subgroup of G to a G-conjugate, that is non-trivial and whose order is coprime to p.

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: Prof. dr. B. de Smit

Source: Nature Biotechnology, Volume 2014, Issue June (2014)

The Graduate School of Social and Behavioural Sciences has the responsibility for all PhD candidates in the field of social and behavioural sciences. The School's themes are anthropology, education and child studies, political science, psychology and science and technology studies..

Unfolding potential

In the last two decades, there have been heated public and scholarly debates in France, the United Kingdom, and the Netherlands on the violent end of empire. Nevertheless, the broader comparative investigations into colonial counterinsurgency tend to leave atrocities such as torture, execution, and…

Do you wish to contact us for further information on the collaboration between Leiden University and Indonesia?

Yisheng Development is to design the entrance area to the Leiden Bio Science Park. Leiden University and the municipality of Leiden selected this Amstelveen-based project developer on the basis of their sustainable design for a vibrant campus. The design provides a combination of residential, working…

How was FDR's image constructed—by himself and others—as such a powerful icon in American memory?

Peter Flach is Professor of Artificial Intelligence at the University of Bristol. An internationally leading scholar in the evaluation and improvement of machine learning models using ROC analysis and calibration, he has also published on mining highly structured data, on knowledge-driven and explainable…

The Executive Board is responsible for the management and administration of the entire University.

‘Can he do it?’ Since the remarkable victory of the All Progressives Congress (APC) in the 2015 Nigerian presidential elections, this has arguably been the most frequently posed question in Nigerian politics.

Lecture

How do colonialism and historical slavery continue to impact the university today? And what should happen next? Students and staff discussed these questions on 11 March.

The proportion of female professors at Dutch universities is increasing, but at a modest rate. At 34.2%, Leiden University is in the top three. These are the results of the Women Professors Monitor for 2025.

A delegation from Zhejiang University in Hangzhou, China, is on a two-day visit to Leiden University. The aim is to explore opportunities for further collaboration and to exchange knowledge with this leading Chinese university.

The Leiden University Centre for the Arts in Society (LUCAS) is one of the few research institutes in the world in which researchers in the field of literature, art, architecture, design and media studies come together to conduct research into the cultural production of the western world, from classical…

The Hans Franken Lecture honors the legacy of Prof. Dr. Mr. Hans Franken, a founding figure of eLaw in 1985.

On 20 May 2022, eLaw - Center for Law and Digital Technologies of Leiden University organised the Hans Franken lecture for the third time. This year the lecture was delivered by Aleid Wolfsen, chairman of the Autoriteit Persoonsgegevens (Data Protection Authority (DPA)), the privacy watchdog of the…

Three new initiatives will provide a more diverse view of Leiden’s academic history, literally and figuratively: a historical study on the background of students and scientists, a new book about the Academy Building, and two new sculptures of female scientists, Ewine van Dishoek, Professor of Molecular…

On 8 February 2021 Leiden University celebrated its 446th anniversary.

On 1 June 2022, Tom Herrenberg defended the thesis 'Prosecutorial Discretion in International Criminal Justice'. The doctoral research was supervised by Prof. P.B. Cliteur and Prof. B.R. Rijpkema.

On 8 November 2021 YAL organized the successful symposium Interdisciplinary Research: Challenges and Opportunities.

Black-and-white photographs filled with solemn young men and distinguished professors line the walls of the Grand Auditorium. Young women are missing from the photos; women rarely obtained PhDs 50 years ago. And this article is about that group, the PhD candidates between 1966 and 1972, who were invited…

The Durham Declaration was presented at the Climate Symposium marking the Coimbra Group’s 40th anniversary on 26 March. Leiden University is proud to be one of the first signatories of this declaration.

From simulations of galaxies to analyses of MRI scans: scientific research needs more and more computing power. Leiden University is planning to set up a completely new facility for high-performance computing. The green light was given officially on 20 June.

Source: Purinergic Signal., Volume 10, Issue 3, pp. 441-53 (2014)

With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…

e-SIDES (ethical and societal impact of data sciences) is a Coordination & Support Action (CSA) part of the Horizon 2020 programme.

What are the circadian disturbances underlying depression vulnerability? How are they related to mood, cognition and sleep ?

Embedding ethical legal and societal aspects for responsible military AI.

Examining mediation and moderation.

The precise psychobiological mechanisms leading to chronic physiological stress responses have not been sufficiently explained, although stress is a major risk factor for disease and early death. A problem for conventional stress theory is that most of these responses seem to occur in situations without…

Promotores: B. Erez, P. Stevenhagen, Co-Promotor: B. de Smit

The data-driven economy allows for the collection and processing of large amounts of data. Such data can be used to optimize profits by (dynamically) differentiating prices for different consumers.

In 2021 many of our students and staff won fantastic prizes and were awarded important research grants. This is our traditional review of these successes as the end of one year marks the beginning of another.

Sophie Vériter explores a small state’s impact on EU security governance, a hard challenge means against big states in this policy area.

Leiden University is going to partner with the Asian Development Bank, a bank committed to regional development. President of the Executive Board Annetje Ottow signed a memorandum of understanding on this unique partnership in Manila on 27 April.

The Plants & Planets exhibition brings two worlds together in a dazzling mix of science, nature and art. It opens at Old Observatory Leiden and Hortus botanicus on 7 February.

How do you achieve the structural change needed for a more inclusive university community? What challenges do female staff face in their careers and what does it take to be a woman in a leadership role? This is what over 40 female staff members from the university discussed on International Women’s…

Revelations about unacceptable behaviour and sexual misconduct in the TV and sporting world have rekindled the public debate about a safe environment. At Leiden University we are coming together to prevent unacceptable behaviour and provide proper care and support for victims. According to President…