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

In this article, Ben S. Kuipers and Joanne Murphy review recent critiques of leadership theory and practice.

In this thesis, topics relating to the optimization of high-throughput pipelines used for imaging are discussed. In particular, different levels of implementation, i.e., conceptual, software, and hardware, are discussed and the thesis outlines how advances on each level need to be made to make gains…

Exploring the application of data-driven AI optimizations, this work leverages past software performance to reduce the carbon footprint and energy consumption of powerful computing applications.

These are our lecturers (in alphabetical order) for the 2026 Summer School in Languages and Linguistics.

Friday 3 February ILS 2.0 presents: Leiden Socio-Legal Series:“Peering Through the Legal Mobilisation Lens to Analyse the Potential of Legal Advocacy” by Dr. Jeff Handmaker – International Institute for Social Studies, Erasmus University.

Evolutionary and ecological interactions affect species on genetic and phenotypic levels. This theme aims to understand these processes at multiple levels: from molecules to genomes to populations and to communities. Our research focuses on evolutionary responses to anthropogenic change, the role of…

Leiden University commemorates its victims of the war and pays tribute to all members of the university community who resisted injustice.

Daniel Soliman defended his thesis on 15 September 2016.

Links to various Digital Humanities organizations and resources, mainly in English.

There are several committees within the IBL that are crucial for organizing and coordinating research, education and finances. Among the lesser-known of these committees is the IBL Institute Council (IC or Instituutsraad, IR). The purpose of the IC is to serve as a link between IBL members and management…

Political Science: National and International Politics is a broad study with a lot of depth. You will study political issues at the local, national and international levels, from a variety of perspectives. You will be taught by renowned, committed professors. In Leiden you will find a real student city…

The authors aim to provide insight into the way in which frontline officials in teams employ leadership behaviour aimed at creating public value.

In this article, Ben de Jong, research fellow at the Institute of Security and Global Affairs, examines the relationship between double agents and their handlers.

The Leiden Leadership Programme (LLP) is an interdisciplinary honours programme for master’s students. It is organised by Leiden University's Honours Academy and Leiden Leadership Centre.

Kartika Setyawati defended her thesis on 12 November 2015

Anthropology of Law in Muslim Sudan analyses the hybridity of law systems and the plurality of legal practices in rural and urban contexts of contemporary Sudan, shedding light on the complex relation between Islam and society.

Jochem van den Boogert defended his thesis on 18 November 2015

In our culture, vocal harmonics function as independent musical elements since only a few decades. Thresholds of the audible explores the changing relationship between singers, listeners and harmonics.

This thesis investigated the extent to which participation of school students in decision-making processes can be achieved, including through participatory action research (PAR) in teacher education.

In 'Dutch Atlantic Connections, 1680-1800', Gert Oostindie and Jessica V. Roitman, both of the Royal Netherlands Institute of Southeast Asian and Caribbean Studies (KITLV) and also affiliated with the History Institute of Leiden University, assemble an internationally acclaimed selection of authors,…

All crested and marbled newts (the genus Triturus) suffer from an unusual genetic abnormality, called a balanced lethal system, that kills exactly half of their offspring. How can a trait so disadvantageous have survived millions of years of natural selection?

Once a month, the Europa Institute comes together to hear from its own staff members, guest researchers, or external scholars about their research plans, work in progress papers, or recently concluded projects relevant to European law. The Food for Thought-series is organised by Melanie Fink.

On Thursday 10 April 2025 Wahyu Widodo successfully defended a doctoral thesis and graduated.

The Common Market Law Review has an internationally composed Editorial Board and Advisory Board.

Workshop

How are night spaces imagined, produced, experienced and narrated by migrant communities in Europe? This research project considers this question in eight European cities: Aarhus, Amsterdam, Berlin, Cork, Galway, Lisbon, London, Rotterdam. Authorities have historically wrestled with the issue of night-time…

Implementing all kinds of change and introducing new structures, far-reaching rules and administrative systems may sometimes seem to distract an organisation from its purpose. Furthermore, there is growing recognition of the need of staff of public organisations to find more meaning in their work: the…

Essays in Archaeology and Assyriology Dedicated to Diederik J.W. Meijer in Honour of his 65th Birthday

Originating from a collaboration between Leiden University, the Leiden University Medical Center, and the Technical University of Munich in 2021, the Virtual ChemBioTalks are an annual, half-day virtual event with world-leading speakers from all sub-disciplines of Chemical Biology.

Conference

News

Local authorities face numerous major issues in different neighbourhoods, all requiring different approaches and solutions. With this study, Leiden University aims to gain a better understanding of how residents from every neighbourhood in The Hague think and act on such issues. This insight will help…

What are the phylogenetic relationships among the members of speciation bursts?

In light of climate change, it is crucial to determine whether plant species can adapt to future climates to avoid extinction. Plants adapt to various conditions by altering their functional traits, such as leaf size or photosynthetic rate. Some traits appear linked and vary together between species,…

How can collaborative participatory action research by student-teachers and their students enhance student participation, improve educational practices, and generate knowledge about these practices that can be used for improving teacher education as well?

Was the progressive colonial civil servant the precursor of the postcolonial development-aid worker?

This interdisciplinary project applies data science techniques to qualitatively and quantitatively visualize the interaction between the University and the city of Leiden (Town&Gown) from 1575 onwards. One of the possible angles for follow-up research is diversity, especially from the international…

Wordt het nog wat met de Arabische lente?

Political Islam is not new to the Middle East, but the appearance of ISIS has stretched the phenomenon to the extreme.

Through language and culture, history, anthropology, and sociology, we delve into the countries, populations, and societies of South and Southeast Asia. From this perspective, we address global issues such as migration, heritage, and colonialism.

A lecture about the drive, dynamics and dilemmas of our central bank and supervisor. Joanne Kellerman discussed the role of DNB, the central bank in our country for already 200 years, and the dilemmas that a supervisor faces. How can be ensured that a supervisory intervention is rightly timed and that…

The master's specialisation Child and Adolescent Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

Leiden University is a unique international centre for the advanced study of languages, cultures, arts, and societies worldwide, in their historical contexts from prehistory to the present.

Do understudied animals contain hidden species?