The last decades it is increasingly recognized that acute as well as chronic postoperative pain is an important problem. Treatment and prevention of postoperative pain is a challenge, especially in special patient populations where there is only limited guidance on how to optimally use opioids.

Note: use Chrome as browser!

Would you like to know how to log in, enrol, or cancel an enrolment? Read here, step by step, how to do this.

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

Underneath you find more information on how our faculty works.

Terrorism only poses a small risk to people but tends to be a major source of public fear. Through fear, terrorism has far-reaching implications for public governance.

If we want to solve global problems, we need to know about both the theory and the practice. How does the international community make decisions about military intervention, for instance? Why is it such a complex process? Professor Herman Schaper has represented the Netherlands at the United Nations…

Our information activities can help you make the right study choice. Throughout the year you can get to know Leiden University, our bachelor's programmes and student life in Leiden and The Hague in various ways.

Smartphone behaviors are so common but how does the brain generate this behavior? The Cognition in the digital environment laboratory (CODELAB) investigated the brain activity surrounding smartphone interactions with the help of Artificial Intelligence. According to their research, the brain fluidly…

How interest groups, differences in policy issues and institutional differences between countries affect whether public opinion is translated into policy?

How can we explain that Caribbean small states have the most stable two-party systems in the world, while Pacific small states have either very weak parties or no parties at all? Matthew Louis Bishop (University of Sheffield, UK), Jack Corbett (University of Southampton, UK) and Wouter Veenendaal (Leiden…

Each year, the Leids Universitair Fonds (LUF) awards grants to research and educational project in various academic fields. In 2019, dr. Tanachia Ashikali received a grant to conduct an in-depth study into the determinants of inclusive leadership in public organisations: What does it take to be an inclusive…

Does suffering suffice? Andrei Poama, Assistant Professor at Leiden University, and Paul C. Bauer, research fellow at the Mannheim Centre for European Social Research, did an experimental assessment of desert retributivism. Their resulsts were published on April 20 on PLOS ONE.

Jaroslaw Kantorowicz examines how strategic climate litigation influences public attitudes on climate policy, using a UK experiment to explore legal cues.

Using brain imaging to discover the area in the brain that recognizes emotion.

Civil service systems are often targets of criticism globally. This article seeks to fill an evidence void about government performance and meritocracy

In romantic love, we often invoke an idiom of infinity—for instance, when we promise to love each other forever, or declare the other to be the one. But what does this metaphysical appeal signify? And how can such a promise of infinite love be made within the bounds of a finite life? In attempt to answer…

The smallness of Suriname, according to political scientist Wouter Veenendaal (Leiden University), strongly affects and shapes the nature of democracy in the country. On the one hand, clientelism ensures that members of each ethnic group included in power-sharing arrangements have access to state resources…

In this article, Honorata Mazepus, assistant professor at the Institute of Security and Global Affairs, and Dimiter Toshkov, associate professor at the Institute of Public Administration, discuss whether the winner–loser gap extends beyond the political domain to subjective health and well-being as…

This article by Kohei Suzuki and his co-authors examine the relationship between job security, at-will employment, and employee outcomes in the public sector amid growing reforms and politicisation.

Our previous meta-analysis (Swart et al., 2019) had shown that feedback targeting text comprehension given when students perform a reading task positively influences learning from text. So far, differences in the effects of feedback were explained by design features, such as the timing and richness…

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.

Xin Zhang, PhD at ICLON, researched the relationship between teachers’ learning motivation and the quality of their teaching. Defence on 6 July.

With his ice-cold nano force sensor, Tjerk Oosterkamp searches for the boundary between the quantum world and the everyday world. The Leiden physicist has received an NWO subsidy of 600,000 euros.

How can we best treat infectious diseases in people with obesity? Hospital pharmacist and PhD researcher Koen van Rhee studied how obesity affects blood levels of two commonly used medicines. He also developed a method for pharmaceutical companies to test new drugs on this patient group.

How can we improve the everyday sounds of the city? In his inaugural lecture on 28 November Marcel Cobussen, Professor of Auditory Culture, advocates using the expertise of sound artists to raise the quality of acoustic environments in cities.

Today is the general election in the Netherlands – although the polling stations have actually been open for two days already because of the coronavirus restrictions. Leiden researchers and students are involved in all manner of ways, and are analysing the campaigns and possible results.

Rutger Leukfeldt, special chair of Governing Cybercrime, and colleagues investigate the link between Protection Motivation Theory (PMT) factors and self-protective online behavior.

Does the university invest into fossil fuels? ⠀

Stefan de Jong is Knowledge Broker at Luris. But what does Luris actually do? And what is a Knowledge Broker? This week we take a closer look at Stefan’s work.

Following years of negotiations between Member States and the European Parliament, there’s finally been a breakthrough for migration policy. What does it mean for the Netherlands, exactly? Mark Klaassen, Assistant Professor in Immigration Law, discusses this on various media channels.

A clear, unambiguous definition of an extraparliamentary cabinet still seems to be missing in the political arena of The Hague. Caroline van der Plas, Farmer–Citizen Movement (BBB) party leader, wants to discuss this issue with the party chairs of the Dutch coalition parties. Wim Voermans, Professor…

With the long lockdown, it’s been a hard year for Leiden businesses. How can the local economy bounce back and how can the University help? Two talk shows discussing this were recently recorded in the Academy Building. They will be aired on Unity TV on 28 September and 12 October.

The way in which written language is processed in the brain is a hot topic in cognitive research. Cognitive psychologist Rinus Verdonschot studied a Japanese script in which a single character can have up to three possible pronunciations. He discovered that all three are simultaneously activated in…

On 21 January, the Institute of Environmental Sciences (CML) has released two reports on circular economy and urban mining in the Netherlands. In them, together with Statistics Netherlands, they take stock of part of the Dutch ‘urban mine’: how much raw material can we reuse from the electricity grid,…

Leiden University has become more sustainable in the past few years, but it could do better, particularly in the area of teaching and research. A student and staff workgroup is preparing a new Sustainability Vision 2030. Programme Manager Daphne van den Berg explains how this is taking shape and where…

In what settings do great ideas turn op? Quanta Magazine follows top scientists to their favorite places to think, tinker and create. Leiden astronomer Ewine van Dischoeck showed the magazine the Noordwijk beach. 'Somebody from the Netherlands is unavoidably linked with water.'

On Wednesday 5 June, Kalin Anev Janse, Secretary-General and Management Board Member of the European Stability Mechanism (ESM), was invited to give a lecture on 'Bridging decision-making: a new direction for Europe? Prioritising financial stability: the European Stability Mechanism and the Banking U…

A civil servant employed by the municipality of The Hague was cause for discussion after taking part in an Extinction Rebellion protest. Only under additional conditions could the employee in question stay on at the municipality. She decided to resign. According to Barend Barentsen, Professor of Labour…

The Municipality of Lelystad is using a new kind of council agreement: a general agreement that all parties are entitled to have their say on. As Professor of Constitutional Law Wim Voermans recently said on Dutch current affairs programme ‘EenVandaag’, this form of agreement would also lend itself…

Tech company Eyeball collects images and data on young amateur football players on a large scale. But is this allowed? Bart Custers, Professor of Law and Data Science, and Gerrit-Jan Zwenne, Professor of Law and Digital Technologies, comment on the issue in ‘NRC’ newspaper.

It occurs on a regular basis: a public administrator resigns or is dismissed when their integrity is at stake. To what extent does that damage their image? Geerten Boogaard, Professor of Local Government, discusses this in an item published by regional public broadcaster ‘Omroep Gelderland’.

Yesterday, the International Court of Justice (ICJ) issued a preliminary ruling in a case brought by Nicaragua against Germany. Nicaragua accuses Germany of genocide and violating international humanitarian law by supplying arms to Israel. Eric de Brabandere, Professor of International Dispute Settlement…

Jaïr van Rhenen studied Medicine in Leiden and is now a GP in the largely religious Veenendaal. Before this, he worked as a tropical medicine doctor in Lesotho. ‘If you have the prospect of an afterlife, you often respond differently to illness.’

Hoping to learn something about the human brain, Leiden researchers are creating a setup to shoot single photons, particles of light, into someone’s eye. ‘The eye is a passageway to the brain.’

Does a snake die when it bites its lip? Why will a mongoose survive a scorpion’s sting, but we humans perish? These questions occupied the minds of toxin-enthusiasts and Master’s students Biology Jory van Thiel and Roel Wouters. They collected information from many sources and published their findings…

Designing innovative algorithms, thinking outside the box, and brainstorming over coffee with his colleagues — this is what physicist Stefano Polla enjoys most. His success shines through in his nomination for the C.J. Kok Jury Award 2024 for PhD thesis of the Year.

How ethical is research involving humans and robots? And can research on artificial intelligence cause problems when it ends up in the wrong hands? In any research involving humans or their data, the ethics committee assesses where the issues are. Associate professor at LIACS Suzan Verberne chairs the…

Microplastics are small pieces of plastic found in the environment. At CML research have been conducted in the distribution of these plastics on beaches around the world using citizen science. In addition, CML is conducting in depth case-studies in the Caribbean and along the Dutch coast. Follow-up…