Up to 50% of individuals with Parkinson's disease develop cognitive impairment over time; this study explores the use of 'practice effects' on neuropsychological tests as an early predictor of cognitive decline.

On Safer Internet Day (Tuesday 6 February), UNICEF Netherlands organised a symposium on the theme of 'Children's rights in the digital world' in collaboration with Leiden University and Kennisnet. Simone van der Hof and Ton Liefaard contributed to the symposium.

In order to reduce the great flow of asylum seekers the Netherlands – and also other European countries – is faced with, the review of the entitlement to family reunification could be tightened. Under current legislation, refugees with a residence permit are – under certain conditions – eligible for…

Melanie joined the Committee in October 2020 and as of 2021 will also form part of its Rule of Law Project, chairing the project’s sub-group on EU Agencies.

The judicial authorities are looking into the possibilities for prosecution for the slogans that were projected on the Erasmus Bridge in Rotterdam on New Year’s Eve. Not an easy task, according to legal experts. When do we consider something to be ‘discrimination’?

Yesterday, the House of Representatives in the Netherlands rejected a motion that would completely rule out an obligation to get vaccinated. Compulsory vaccination in the Netherlands can be considered if public health is at stake. Professor of Health Law Aart Hendriks of Leiden University discussed…

On 6-8 and 10-13 November 2020, the Network for Migration Law (Netzwerk Migrationsrecht) organised their 14th annual conference on the topic of ‘law at the border’.

The number of cases of coronavirus in the Netherlands is on the rise. Some mayors are now calling for measures that are more far-reaching than those at present. For example, they want it to be possible to enforce measures behind the front door. Would that be allowed?

In tracing the deeper historical roots of what Xi Jinping contemporarily frames as a “Chinese dream” of “wealth and power,” the article discerns key actors, events, and organizing principles in a long process toward restoring China’s deemed rightful place in the regional system.

Cody Bahir defended his thesis on 1 June 2017.

Grotius Dialogue

Bob van Grieken and Jaroslaw Kantorowicz published an article in the journal Geopolitics which explores the determinants of China's official financing of Pacific Island states.

Bernini and Pallavicino, the artist and the Jesuit cardinal, are closely related figures at the papal courts of Urban VIII and Alexander VII, at which Bernini was the principal artist. The analysis of Pallavicino's writings offers a new perspective on Bernini's art and artistry and allow us to understand…

For this project we delve into children's digital media use during the transition from kindergarten to group 3 and investigate its impact on their social development.

Sasse, van Breen, Spears & Gordijn demonstrated an anger gap in response to sexism which was larger for women than for men and found evidence that expressed anger was associated with instrumental concerns.

Japan's Occupation of Java in the Second World War draws upon written and oral Japanese, Indonesian, Dutch and English-language sources to narrate the Japanese occupation of Java as a transnational intersection between two complex Asian societies, placing this narrative in a larger wartime context of…

On Friday 7 March 2025 Adam Knight successfully defended a doctoral thesis and graduated.

Ending the United Kingdom’s (UK) forty-seven year European Union (EU) membership has fundamentally transformed its relationship with the EU. After years of tumultuous negotiations, international law now once again governs the UK’s relationship with the EU. This has resulted in a sophisticated body of…

Simone van der Hof, Professor of Law and Digital Technologies at eLaw, and Mohammed Raiz Shaffique, Researcher and PhD candidate at eLaw, have published a report on age assurance for the European Commission.

Subproject of

The rapid expansion of research on human gut microbiome in recent decades has highlighted its role in human metabolism, immune regulation, and behavior.

Pieter Jakob Cosijn (1840-1899) was Leiden University’s first Professor of Germanic and AngloSaxon Philology. A recognised expert in the field of Old English grammar and textual criticism, Cosijn corresponded with various prominent philologists and experts in his field, including Julius Zupitza, Arthur…

Kathryn Emerson defended her thesis on 28 June 2016

In April 2018, Melanie Fink was elected as a member of the Coordinating Committee of the ESIL Interest Group ‘The EU as a Global Actor’. For the next four years, she will work in that function alongside Christine Kaddous (University of Geneva), Anne Thies (University of Reading), and Ramses Wessel (University…

Employees are laying down their work in various sectors, such as regional public transportation and Dutch postal service PostNL. Inflation appears to be increasing dissatisfaction about working conditions, thinks Barend Barentsen, Professor in Labour Law at Leiden University. ‘It's the final straw.’

Uit onderzoek van Follow the Money blijkt dat burgemeesters demonstraties steeds vaker belemmeren en ontmoedigen. Follow the Money verwijst daarvoor onder andere naar eerder gepubliceerd onderzoek van universitair docent staats- en bestuursrecht, Rowie Stolk, waaruit blijkt dat sommige gemeenten niet…

In two moving articles, Dutch newspaper Trouw has reported on the lengthy detention of Abu Zubaydah in Guantánamo Bay. Zubaydah was tortured over a period of many years. Helen Duffy, Professor of International Humanitarian Law and Human Rights, and also Zubaydah’s lawyer, recently booked a major victory…

This book by Damien van Puyvelde provides the first comprehensive English-language account of France's modern foreign intelligence and explores its evolution, operations, and role in global security.

Wijayanto defended his thesis on 17 January 2019

The chance that it will do so is about zero, but Russia is legally obliged to investigate violations of law during the war in Ukraine. States that enter into an armed conflict often deny liability, but under international humanitarian law and human rights they are obliged to investigate their military…

Dr Amy Strecker has recently been awarded a LGI BREED grant to develop her project on property and spatial justice in international law. Building on her previous research into landscape protection from cultural heritage, environmental and human rights perspectives, Amy will combine legal analysis with…

Leiden researchers Max van Duijn (Leiden Institute of Advanced Computer Science) and Vasilika Kosta (Leiden Law School, Europa Institute) will join The Young Academy (Royal Netherlands Academy of Arts and Sciences) KNAW)).

Rural cult places were of central importance in the non-urbanised areas of ancient Samnium, in central southern Italy. Their development, roles and functions in ancient society, however, remain important research questions. New excavations at one of these sanctuaries, the rural temple of S. Giovanni…

Understanding others’ emotional behavior is essential for navigating daily social life. But how is such an understanding achieved? The eye-tracking study by Yung-Ting Tsou and colleagues shows that children with hearing loss adopt a unique visual strategy that makes uses of explicit visual information…

A comprehensive analysis of Nietzsche's conception of conflict and the way in which relations of struggle condition the organisation of complex systems (with a specific focus on the human psyche and the body politic).

How do we define the works of a film director whose films cross many established boundaries at once?

From the beginning of Galileo’s career, well before the publication of the Sidereus Nuncius, his contemporaries took pains to shape his reputation and fame. They were fully aware that their efforts would shape the course of his career; they also knew that they would profit from helping him.

Using artificial intelligence is more complicated for the government than for companies. Bram Klievink, Professor of Public Administration, aims to identify the problems and find solutions.

On 5 May we celebrate freedom, a basic human right that should not be taken for granted. We asked international students and staff what it means to them.

Inspectors say the William Schrikker Foundation, a leading Dutch youth protection agency, is failing in its duties. Mariëlle Bruning, Professor of Child Law, told public broadcaster NOS: ‘It's deeply concerning that there's insufficient oversight of children’s safety.’

'Mariana Gkliati delivered a presentation entitled: 'Accountability of the Europepan Border and Coast Guard Agency: The Litigation Route' at the Refugee Law Initiative's 2nd Annual Conference in London, on Monday 5 June

Stellar feedback is a crucial ingredient in the evolution of galaxies.

After an initial suggestion of a move toward Israel, India’s Prime Minister Modi has signaled a significant recalibration of his government’s engagement with the Middle East region. Now, India seems to be prioritising strong ties with the Gulf states.

This book explores the Indian tradition of liberalism through a critical intellectual biography of Valangaiman Sankaranarayana Srinivasa Sastri (1869–1946).

Today, humanity produces sufficient calories, in theory, to feed the 7.7 billion people on the planet: the amount of food produced per person on the planet has gone up more than 40% since the 1960s. Yet, ironically, the prevalence of undernourishment – which had been declining for decades – has started…

This article tries to examine if one can take the 'One Net' for granted, since the world becomes increasingly fragmented with social and geopolitical tensions. Furthermore, the author seeks to discover what is at stake if the global interoperable network is under a threat of fragmentation.

Dr Robert Heinsch and his team of IHL Clinic researchers at the Kalshoven-Gieskes Forum on International Humanitarian Law have won a prestigious Erasmus+ grant for cooperation partnerships in higher education in cooperation with the IHL Clinics at Ruhr-University Bochum (Germany) and Roma Tre University…

Indigenous philosophies have been ignored for too long. This prompted Osiris González Romero to study the wisdom of the Nahua in Mexico. Their philosophy has an important message for the consumption society: see the earth and nature as living beings and not just as resources. PhD defence 22 June.

Yvonne Erkens and Fieke Weber, both from the Department of Labour Law and Social Security, recently organised a panel discussion on behalf of the International Labor Rights Case Law Journal (ILaRC). The discussion took place during the ISLSSL World Congress in Rome and was a huge success.

- Case study of the Hungarian Archaeological Mission in Abdallah Nirqi in 1964 –