Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

The skin barrier function is provided by the stratum corneum (SC). The lipids in the SC are composed of three lipid classes: ceramides (CERs), cholesterol (CHOL) and free fatty acids (FFAs) which form two crystalline lamellar structures. In the present study, we investigate the effect of CER chain length…

Young children exhibit more aggressive behaviour if their nervous system fails to respond adequately to stress situations and if they are exposed to risk factors such as smoking or psychological problems experienced by the mother during the pregnancy. This is the conclusion of PhD candidate Jill Suurland.…

During the colloquium ‘Minorities and the Criminal Justice System’, Jasmina Mačkić (lecturer at the Europa Institute) presented some of the research results from her PhD thesis ‘Proving Discriminatory Violence at the European Court of Human Rights’.

Livia, aged 7, was in class four. She loved to chat and was good at reading aloud. At least, at home. At school she never read aloud and she hadn't spoken a single word. What was going on? Selective mutism was the subject of the inaugural lecture by Maretha de Jonge, Professor by Special Appointment…

Members of our research team give different types of presentations and lectures.

When we are around four years old we suddenly start to understand that other people think and that their view of the world is often different from our own. Researchers in Leiden and Leipzig have explored how that works. Publication in Nature Communications on 21 March.

The History Days are coming to Leiden for their anniversary edition! The History Days in Leiden on 27, 28 and 29 August 2026 bring together everyone who works with the past professionally: teachers, students, employees of archives, museums and other heritage institutions, independent entrepreneurs,…

This project, South American population history revisited: multidisciplinary perspectives on the Upper Amazon (SAPPHIRE), investigates population dynamics in western South America on the basis of traces in the geographical, genetic, archaeological, ethnological, and linguistic record.

An investigation carried out by Dutch news programme Nieuwsuur has revealed that despite a recent ruling by the Centrale Raad van Beroep (Central Appeals Tribunal, CRvB), people who for years cared for a seriously ill relative paid for via a PGB (persoonsgebondenbudget, personal care budget) do not…

The world let Rwanda down at the time of the genocide, and that can never be allowed to happen again, Cleveringa Professor Roméo Dallaire declared in his lecture on 26 November. Dallaire, a retired Canadian Lieutenant-General, also called for more attention to be paid to soldiers suffering the effects…

In this article, Yannick Veilleux-Lepage and Tommy van Steen, assistant professors at the Institute of Security and Global Affairs, discuss the degree of consensus within the field of terrorism studies regarding the impact of the COVID-19 pandemic on the activities of violent non-state actors.

Each year on the university’s birthday, children at primary schools in Leiden and The Hague have a lesson from a professor – about children’s rights and robots in surgery, for example. The children get to do activities. And ask questions: ‘How do you become a professor?’

Annual PhD training

Professor Anne Meuwese is calling on governments to show more vulnerability when it comes to providing information about how they function.

Here you will find the answers to some of the frequently asked questions about admission to the clinical specialisations of the Master in Psychology.

Mariana Gkliati has recently published an article in the European Journal of Legal Studies. In her contribution, Gkliati discusses the application of the EU-Turkey Agreement, analysing the decisions of the Greek Appeals Committees on whether Turkey constitutes a safe third country. She assesses the…

Amid rising polarisation and discrimination, lawyer and human rights activist Lilian Gonçalves-Ho Kang You wants to show in her Cleveringa Lecture on 26 November how dangerous exclusion is.

This dissertation is part of a broader research project that revolves around unraveling the evolution of balanced lethal systems.

Clinical Child and Adolescent Studies graduate Gillian King has two different jobs. Together with a partner, she runs ‘Het Leerhuis,’ a support centre for children with learning difficulties. But she also writes books, chick lit to be precise. This is how she has made something of a name for herself…

The first 'Tafel van Thorbecke' took place at Leiden University on Thursday 17 November 2022. For this new lecture series, initiated by Fatma Çapkurt and Gert Jan Geertjes, external scholars will be invited to speak about their research in the field of constitutional and administrative law.

The Ministry of the Interior and Kingdom Relations has awarded the Dutch Administrative Law Association (VAR) a start-up grant for one of the projects of the initiative 'Bestuursrecht beter' (better administrative law): a Digital Helpdesk for the Elderly. The grant will enable the VAR to take the first…

Rietje Knaap’s (83) PhD was a real feat of endurance, but she persisted. ‘You’re married so you don’t need a pension, do you?’ What are the experiences of Knaap and women who followed in her footsteps? In the run-up to International Women’s Day on 8 March, three generations of female doctors look back…

When children wean off from heavy medication, they often experience withdrawal symptoms. The severity of these symptoms is often difficult to predict. Pharmacologist Bas Goulooze developed a computer model to determine the best weaning strategy for each child. His research has now been published in…

The Faculty of Archaeology proudly presents the research brochure Perspectives on the Past, featuring passionate, dedicated researchers introducing a dazzling scala of research topics: from present-day traditional knowledge in Africa to the power of glue in Palaeolithic Europe. In addition to these…

This international conference, held in Leiden form 22 to 24 May 2017, focused on adat law in Indonesia a century after the Adat Law Foundation (Adatrechtstichting) was set up in Leiden by the famous professors Van Vollenhoven and Snouck Hurgronje. In the decades that followed the Adat Law Foundation…