Collecting as much information as possible about administering a new medicine to people can save a lot of money.

They were called 'annoying brats', the group of campaigning scientists who in 1978 founded what is now an internationally acclaimed ecological research institute. Their stories and those of the current staff of the Institute of Environmental Sciences are described in the book 'Forty years of Leiden…

Knowing how to resolve global problems is one thing, but how do you make sure that it actually happens? That’s the real challenge, because there are powerful movements everywhere that want to reconstruct the walls of nation states. In an attempt to resolve this issue, Leiden researchers are experimenting…

Even a small quantum computer should be able to simulate exactly the properties and behaviour of new molecules. This would take chemistry to an entirely new level. Better solar panels, more powerful batteries, saving lots of energy in the chemical industry: the applications have the potential to transform…

The aim of this research was to establish if Ebeling's semiotactic theory and method of semiotactic analysis, as described in his works Syntax and Semantics (1978), Een Inleiding tot de Syntaxis (1994) and Semiotaxis, over Theoretische en Nederlandse Syntaxis (2006), could be applied to Modern Japanese…

What is the optimal investment policy according to which a firm adapts its capacity in a competitive market?

Does powerlessness and dependence lead to the legitimation of the social, political, and economic status quo and of those in authority?

So you graduated from the Media Technology program? Congratulations, Master of Science! Here you find information that is relevant after your graduation.

Which teacher did an outstanding job in not only transferring knowledge in novel ways but also in getting students enthusiastic and connecting a course to current research themes? Meet the nominees for the Teacher of the Year Award 2023!

Today’s socio-economic challenges aren’t new. In the centuries after the retreat of the Roman state people with different backgrounds and with different ways of life somehow managed to build and maintain a complex economic system in northern Gaul that would produce the ruling dynasties of Europe. By…

Positive friendships are characterised by understanding mutual wishes and intentions, respect for each other’s boundaries and pro-social behaviour. Qualities that might be more challenging for autistic adolescents.

The close interaction between organic chemi stry and biology goes back to the late 18th century, when the modern natural sciences began to take shape. After synthetic organic chemistry arose as a discipline, organic chemists almost immediately began to pursue the synthesis of naturally occurring compounds,…

What distinguishes a tumour cell from a healthy cell? Researchers are trying to answer this question as precisely as possible. Certain differences could eventually lead to new therapies.

Port City Futures is an initiative of the Leiden-Delft-Erasmus Universities collaboration. The program investigates the evolving socio-spatial conditions, use and design of port city regions, in particular exploring areas where port and city activities occur simultaneously and sometimes conflict.

Researchers at LIACS are working to devise the computers of tomorrow that will be the backbone of the Cloud and Edge computing paradigms as well as the Internet of Things. In this respect, we are involved in research and development of high performance computing systems, embedded & real-time computing…

In 2015 the U.S. Environmental Protection Agency revealed that German car manufacturer Volkswagen had illegally installed software to produce fake NOx-emissions results. This study aims to analyze how the German news media framed VW’s role.

The project 'Policing the high seas: maritime law-enforcement in a multi-actor environment' aims to identify the gaps in the legal framework for EU activities in the maritime security domain, and specifically in the areas of combating piracy, human smuggling or trafficking and drug trafficking.

The ‘Locke drawings’ collection and the representation of Brazilian native peoples in global perspective

The Old Observatory houses four historical telescopes. On this page you can learn more about them.

This project contests the assumption of criminologists that gender differences in recorded crime are static over time and that women are in general less likely to commit a crime than men.

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why they chose Leiden University to study their master's programme.

If researchers make their data FAIR, computers can link large quantities of data and identify patterns, thus greatly accelerating the process of arriving at new insights. In Leiden, the birthplace of ‘FAIR data’, Professor Barend Mons explains the meaning of this term.

The central aims of this project are to establish the shapes of the various urban hierarchies existing in the provinces of the Roman Empire and (especially) to use the quantitative properties of these hierarchies to shed new light on levels of economic integration.

Fundamental research teaches us how our brain decides to eat one more sweet, instead of doing exercise. A public information campaign about healthy lifestyle has little impact on the decision, as Professor of General Psychology Bernard Hommel is aware. However, he does know what works. But the question…

In pursuit of solutions to China’s inter-regional cross-border insolvency cooperation, my doctoral dissertation provides 10 original recommendations accompanied with comments, which are entitled “China’s Inter-regional Cross-border Insolvency Arrangement” (CICIA).

Every year, in the last month of the Islamic calendar, millions of Muslims from around the world come together in Mecca to perform the Hajj, the pilgrimage that all capable Muslims should perform at least once in their lives. In 2013, the National Museum of Ethnology in Leiden organised the exhibition…

Data science is now growing fast in many places, but scholars at Leiden University have been developing data science techniques for a long time already. Thanks to their broad-based expertise, Leiden statisticians are currently combining the achievements in statistics with the latest methods of statistical…

The WIIS-NL blog provides articles on gendered international security issues taking a multi-disciplinary approach which includes but is not limited to WIIS focus areas. This blog aims to reach a broad audience of academics, practitioners, students, and interested members of the general public.

Parasitic worms and stomach bacteria suppress immune reactions such as allergic responses. Parasitologist Hermelijn Smits and lung specialist Christian Taube from the LUMC are trying to learn from these micro-organisms.

Multinationals use loopholes in the tax treaties between different states. A possible solution would be to eliminate all these loopholes in one go by creating a central global treaty. Leiden researchers are investigating whether this kind of mega-treaty is feasible.

Virtual currency is a new phenomenon. There is still uncertainty regarding its operation, status and legal consequences.

Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…

Larissa Mendoza Straffon and colleagues investigated visual attentional biases toward self-made artworks, which tend to be favoured, remembered, valued, and ranked above and beyond objects that are not related to the self. Their findings confirm that attention and preference are higher for self-made…

The World Cultural Council (WCC) is an international organisation based in Mexico. Since 1984 the WCC has held an annual Award Ceremony granting prizes to outstanding scientists, educators and artists whose breakthroughs in the fields of knowledge, learning and research have contributed positively to…

Identifying the gaps in the legal framework for EU activities in the maritime security domain, and specifically in the areas of combating piracy, human smuggling or trafficking and drug trafficking.

Leiden University and VU Amsterdam are developing a joint research project for a digital platform on which you can compose and share storylines with the use of images. Such interactivity will make a boring high school history lesson much more exciting and personalized. Furthermore, it will stimulate…

How is tradition constructed and belief made plausible in fiction-based religion?

Supplementum Epigraphicum Graecum is an annual publication collecting newly published Greek inscriptions and studies on previously known documents.

To what end and how does Plautus constantly underline the Helleni(sti)c provenance of his art? How does this aspect relate the author’s originality?

Understanding the history of Islam and Muslim societies sheds a clear light on the complex and changing social structures of the Middle East, including the current trouble spots whose effect spreads all the way to Western Europe.

Assessing the effects of landscape and land-use changes on the visibility of archaeological landscapes in Central-Southern Italy.

A new therapy for the serious Graft-versus-Host disease

The effects of many treatments are determined, to a significant degree, by factors other than the medicine or treatment itself. For example, placebo effects can be equal to the effect size of for example antidepressants or painkillers. Contributing factors are the trust placed in the doctor, the expectation…

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why you have to choose Leiden University to study your bachelor's programme.

The discussion on employability of higher education graduates has been around for several years, with more emphasis in the 21st century. Yet, universities are still challenged in the pursuit of providing work-ready graduates who can meet industry expectations.

From 2 to 5 September 2015, Leiden served as the stage for one of the world’s largest linguistics conferences: the Societas Linguistica Europaea (SLE) 2015 Annual Meeting. Marianne Mithun, a professor at University of California, Santa Barbara and outgoing president of the SLE, is not surprised that…

As a research project between four Jean Monnet Chairs - two located in Europe, one in Canada and one in the U.S. -- the project DEUBAL has been approved in 2010 for co-financing by the European Commission. DEUBAL aims to study changes in European decision-making due to the Lisbon Treaty, by a combination…

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why you have to choose Leiden University to study your bachelor's programme.

The Hague is the international city of peace and justice, home to many international organisations, embassies and multinational corporations but also a fun student city filled with music, cafes, museums and the most popular beach in the Netherlands!

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why they chose Leiden University to study their master's programme.