This problem analysis raises the importance of a two interlinked questions: (1) what are important digital skills in the public sector? and (2) how well do different organizational and individual factors explain differences in skills levels?

Beyond the immediately visible plenum, parliaments are highly complex institutions. They work through various venues in which decisions are prepared or even taken. The two main institutions in this regard are parliamentary party groups, which comprise legislators who are elected under the same party…

This Research project is funded by the 7th European Community Framework Programme, with additional funds from NWO Aspasia grant, and in collaboration with University of California, Berkeley.

PBDL favors multidisciplinary research. Depending on the problems under investigation, PBDL establishes collaborations between experts from for example molecular genetics, molecular and electro cell physiology, biochemistry, organic chemistry, analytical mathematics, mathematical statistics and computational…

How can an effective ‘Safe and Circular by Design’ method be developed for practical application in a designer’s context, particularly for the initial stages of product design, incorporating Safe-by-design strategies, LCA/LCT, risk assessment and ethics?

SciSTIP was established on 1 April 2014 as part of the DSI-NRF Centres of Excellence Programme funded by the South Africa’s National Research Foundation (https://www.nrf.ac.za/). SciSTIP is hosted by the Centre for Research on Evaluation, Science and Technology (CREST) at Stellenbosch University and…

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

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.

This research cluster is a part of the Institute of Political Science’s research programme ‘Institutions, Decisions and Collective Behaviour’. Its members focus on the democratic role of citizens and the representative links between voters and politicians.

In the track Terrorism and Political Violence you will be familiarised with the academic debate regarding these contested concepts.

Leiden University provides ambitious students with the most recent and innovative areas of knowledge, and offers them the freedom to develop their own area of expertise.

Lecture, CHiLL series

The Digital Humanities and Cultural Analytics minor will be offered in the 2026 academic year, and replaces the 2025/2026 Digital Humanities and AI Minor.

The awards honour Krijn Rietveld’s vision of science that creates real-world impact. Explore how the programme evolved, how the awards are structured today, and the values that continue to inspire researchers across disciplines.

Researcher Femke Reidsma has been awarded a prestigious Rubicon grant. With this fellowship, she will spend two years conducting research at Harvard University, where she will join a leading paleoecology laboratory.

From the first semester of 2026, Leiden University and Universidad Diego Portales (Santiago, Chile) will launch three online virtual exchange programmes. The themes are: political analysis, tensions surrounding Indigenous peoples in Latin America, and the securitisation of borders.

Archaeometric analysis of glazed pottery assemblages from the Early Byzantine to the Early Modern periods in the Aegean.

Promotor: S.M. Verduyn Lunel

This article describes the phenomenon of firearms violence and the importance of including non-lethal firearms violence in understanding this phenomenon.

By drawing on the personal experiences of contributors based in different institutions and countries, the articles in this special issue provide a fairly broad overview of ethics practices and concerns in different localities (though not globally, as we had originally hoped), showing, as one student…

In this book, Vanessa Newby provides the first detailed examination of credibility’s essential place in peacekeeping.

This timely and engaging book examines the rise of populism across the globe. Combining insights from linguistics, argumentation theory, rhetoric, legal theory and political theory it offers a fully integrated characterization of the form and content of populist discourse.

Health Data Science Leiden University

A major goal of ABS research is to overcome one of the major bottle-necks in metabolomic research: the lack of a high-throughput infrastructure in which thousands of samples can be processed in a standardized and cost-effective way (max. a few tens of Euro’s per sample for a full metabolome profile).…

This thesis presents a detailed description of the phonology, the tone system and the grammar of Liko, a Bantu language spoken by about 70,000 people in the northeastern part of the Democratic Republic of the Congo. It provides numerous examples.

With the advent of multicore processors and data centers, computer hardware has become increasingly parallel, allowing one to run multiple pieces of software at the same time on different machines. Coordination of these pieces is best expressed in a coordination language as an explicit interaction protocol…

To goal of this project is to get a deeper, more comprehensive and up to date understanding of the state of University-Business Cooperations (UBC) in Europe, from the perspective of both the Higher Education Institutions and the business sector.

This new study by professor Peter Hoppenbrouwers focuses on conflict in village communities of late medieval Drenthe in order to depict a typical peasant society in late medieval Europe.

In this on-line dissertation, jazz saxophonist Dick de Graaf investigates a variety of compositional and improvisational models and techniques in contemporary jazz and Western art music, and discusses possible applications of these materials in current jazz practices.

On 2 May, Sophie Starrenburg defended the thesis 'Striking a balance between local and global interests: communities and cultural heritage protection in public international law'. The doctoral research was supervised by Nico Schrijver and Yvonne Donders.

In modern information systems, a large number of different components are often active simultaneously. This phenomenon - known as concurrency - underlies not only the functioning of computer systems but of any system in which many processes take place at the same time.

The Children’s Rights Monitor provides a thematic overview of the implementation of the UN Convention on the Rights of the Child in the Netherlands.

On July 5th, Mulugeta Tarekegne Tsegaye succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Mulugeta on this great result.

On Thursday 16 November 2017 Thomas Leclerc defended his PhD Dissertation ‘A Corrective Approach to Reduce Aircraft Greenhouse Gas Emissions. Contribution to the Study of Interactions between Legal Orders of International Law’. The Supervisors are Professor P. Mendes de Leon and Professor L. Grard.

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.

On the 6th of November, Virginia Beavon Ham successfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Virginia on this achievement.

The subject of this thesis, ‘Approach to Markov Operators on Spaces of Measures by Means of Equicontinuity’, combines an analytical and probabilistic approach to Markov operators.

On 15 February 2024, Alexandros Sarris defended the thesis 'International Law and Governance of the Arctic in an Era of Climate Change'. The doctoral research was supervised by Nico Schrijver and Freya Baetens.

The Leiden Risk & Regulation Lab serves as hub for excellent research at the forefront of regulation and risk governance and acts a platform for engagement with the practice of, and education in, regulation and risk governance.

The role of grave sets in Corded Ware and Bell Beaker funerary practices

Tools and Data of the department of Environmental Biology

Work placement as a professional development programme for vocational teachers has been widely implemented. This dissertation provides insight into vocational teachers’ learning process in this programme within Chinese vocational education.

Damien van Puyvelde and Fernando Tabárez Rienzi examine the evolution of Open-Source Intelligence (OSINT).

Intelligence scholars have been struggling to find the conditions under which international intelligence cooperation occurs. Most focus on transactional motives and guaranteed returns, the so called ‘Quid pro Quo’. At the same time, trust is often mentioned as one of the foremost conditions, yet it…

Time-series forecasting through modelling sequences of temporally dependent observations has many industrial and scientific applications. While machine learning models have been widely used to create time-series forecasting models, creating efficient and performant time-series forecasting models is…

Human impact and plant subsistence in Dutch wetlands during the Late Mesolithic and Early and Middle Neolithic (5500-3400 cal BC)

On Wednesday 14 February 2024 Yorum Beekman successfully defended a doctoral thesis and graduated.

Promotor: A. Doelman, Co-promotor: V. Rottschäfer

Mining time series is a machine learning subfield that focuses on a particular data structure, where variables are measured over (short or long) periods of time.