Enforcement of group cooperation fails because of discriminatory punishment, according to research by Welmer Molenmaker and colleagues. When group members have different backgrounds, punishment turns into a double-edged sword: no longer used just to prevent group exploitation, but also to break the…

How do individuals make decisions? What determines the quality of group decisions? When and why do people cooperate with others? How does intergroup competition evolve?

Are you a British citizen currently studying at Leiden University? Find out about the effects of Brexit such as the transition period, residence permits, tuition fees and more.

The research project addresses the question how complaints in the voluntary youth care system are dealt with on the municipal level and what role (municipal) Children’s Ombudspersons play in this context, through qualitative research methods.

This study investigates the syntax and distribution of the two elliptical phenomena Gapping and Fragments, as well as the movements involved in ellipsis contexts in general.

This dissertation is an analysis of spelling variation in Hengwrt and Ellesmere manuscripts, two early texts of The Canterbury Tales.

On 27 September 2017 a new book by Prof. Luuk van Middelaar appeared, entitled The new politics of Europe. The book is at the same time a front line account of Europe’s recent crisis years – from monetary turmoil to tensions around Ukraine, from refugee crisis to Brexit – and an analysis of the Union’s…

To what extent does using 360 immersion to a speaking task change the elicited speech, compared to conditions with 2D presentations?

Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.

What does it mean to eat healthily and responsibly? This question is gaining a new urgency now that in many countries undernourishment is being overtaken by diseases of affluence, such as obesity, and we are also becoming more aware of the environmental impact of our eating habits. It’s time to take…

How well children learn depends to a large extent on good teachers and effective learning materials. Wilfried Admiraal investigates such issues as gaming as a modern learning tool. He concludes that this tool has little to offer less talented students.

Online platforms such as YouTube, Facebook, and X (formerly Twitter) have become part and parcel of everyday media use. Journalists incorporate posts from politicians into newspaper reports, scientists share their insights in short posts or videos, and the judiciary uses social media to explain their…

Researchers of the National University of Singapore and Leiden University have discovered that chimpanzees and bonobos share the contrasting colour pattern seen in human eyes, which makes it easy for them to detect the direction of someone’s gaze from a distance.

This PhD project investigates the different uses of Mandarin

Does a shared idea of the ‘public servant’ exist in Europe? Sager, Overeem, and others explore.

The journey of sugar from east to west

Since the adoption of agriculture people have cultivated fields. The project concerns all kinds of aspects related to raising crops.

The Leiden University PhD regulations are leading for the composition of the PhD dissertation. As Leiden University prescribes no strict regulations with regard to the structure and content of a PhD dissertation, LACDR has composed thesis guidelines, specified per research group. At the start of a PhD…

LIAS aims to advance the globally conscious vision of area studies, both within and outside the academic community. Focusing on Asia and the Middle East, the institute is a meeting place of multiple fields of inquiry, theories and methods, historical periods, and areas.

How do videos, movies and documentaries dedicated to indigenous communities transform the media landscape of South Asia? Based on extensive original research, this book examines how in South Asia popular music videos, activist political clips, movies and documentaries about, by and for indigenous communities…

At the Lak you can participate in a large variety of artistic and creative courses taught by our professional teachers. We offer courses in the following categories: theater and presentation, dance, visual arts, music, photography and writing (literature). All staged art courses come to a close with…

The two-years master's programme ICT in Business and the Public Sector (last intake in February 2025) at Leiden University provides students with a deeper understanding on our thinking on physical, geographical and industry boundaries, on distance, speed and communication. The programme offers two specialisations:…

1) How natural cycles and activities are interconnected for building the time in one community? 2) What perceptions of Ñuu Dzaui peoples about their landscape can be connected with precolonial times?

In this dissertation (titled: Exploring the Synergies between Transfer in Reinforcement Learning and Procedural Content Generation) we explore how the two research fields named in the title, namely Transfer in Reinforcement Learning (TRL) and Procedural Content Generation (PCG) can synergize togethe…

Assistant Professor Vedran Dunjko and his team received a gift from Google to support their quantum research. The research focuses on whether quantum computers can provide new ways of understanding the mysteries of high-energy physics.

Check the application deadlines for the MSc Dutch Politics at Leiden University: key dates for EU and non-EU applicants, including housing application deadlines.

Now that you are aware of the admission requirements, it's time to check the application deadlines.

PLEASE NOTE: The specialisation High-Tech Innovation starts in September 2026.

Application deadlines are very important if you want to apply for the ICCL programme. Please keep the deadlines in mind as published on this page!

Now that you are aware of the admission requirements, it's time to check the application deadlines.

Discover the admission requirements for the MSc in Nationalism, Ethnic Conflict and Development at Leiden University, including academic prerequisites, ECTS expectations, and English language standards.

This article discusses the coevolution of several species of the tribe Phyllantheae and moths of the genus Epicephala.

Now that you are aware of the admission requirements, it's time to check the application deadlines.

Now that you are aware of the admission requirements, it's time to check the application deadlines.

Want to continue developing yourself and boost your career at the same time? Leiden University offers a range of lectures, master classes and courses at academic level.

When we are in a conversation, how do we know exactly when to respond, and how do we manage to respond so swiftly, yet without interrupting our interlocutors? Can speech melody – in particular utterance final “boundary tones” – help us determine who will speak next, or are these cues too late in the…

Under Dutch law, like German or English law, the violation of a statutory provision does not establish civil liability for damage caused to another person. Such liability requires that the statutory provision concerned aims to protect against the damage or, put differently, that the harmed interest…

Bacteria caught red-handed, deeply frozen just as they were about to cause Lyme’s disease. Ariane Briegel is wildly enthusiastic about the wonders she observes thanks to three elements: a freezing technique, a camera-equipped microscope, and AI. ‘It’s fascinating. Every single cell is different.’

About nine million people worldwide contract tuberculosis each year. Research into new treatment for this disease has received fresh stimulus with more efficient techniques and a new understanding of how the tuberculosis bacteria works.

In which way was literary celebrity constructed in the nineteenth century and what forms of fandom were there?