The consequences of social tendencies for the legislation and institutions in the fields of social security, the labor market policy and pension reform are examined in this multdisciplinary research program..

A comprehensive analysis of Nietzsche's conception of conflict and the way in which relations of struggle condition the organisation of complex systems (with a specific focus on the human psyche and the body politic).

The aim of the project is to unravel the genetic and contact relations between the indigenous languages of Mesoamerica (Mexico and western Central America) and the Middle Andes region (Ecuador, Peru, Bolivia), as part of a larger endeavor to understand the historical process of the peopling of the Americas…

The excavation of three Bronze Age barrows and surrounding landscape at Apeldoorn-Wieselseweg

PACES is an innovative, inter-disciplinary and multi-level research project that asks, How do changes in society, individual life experiences and migration policy shape decisions to stay or to migrate over time and across countries? And how can this knowledge inform future migration policies and gov…

Repairing organs, tissues and cells to fight chronic diseases.

The Department of Business Studies focuses on research questions at the intersection of law and behaviour in the context of organizations and enterprises. The department brings together specialists in entrepreneurship, organizational psychology, marketing, strategy, economics, and finance.

Our recent excavations have focused on the more recent New Kingdom/Late Period (ca. 1500-332 BCE) material.

As Lila Abu Lughod pointed out in 1989, North Africa has been one of the geographical ‘zones of prestige’ for the development of canonical approaches and crucial theoretical debates regarding the comparative study of Islam.

This research aims to investigate how different social forces interact with hydropolitics in the Eastern Nile Basin and what are the constraints of engagement.

On 25 January 2024 H.J. Pak successfully defended a doctoral thesis and graduated.

What does it mean to protect against disaster in the context of climate change and other cascading environmental crises?

Since the late 1990s, Leiden University has been located in two cities: Leiden and The Hague. Leiden Law School is also involved in teaching and research at Campus The Hague.

Understanding others’ emotional behavior is essential for navigating daily social life. But how is such an understanding achieved? The eye-tracking study by Yung-Ting Tsou and colleagues shows that children with hearing loss adopt a unique visual strategy that makes uses of explicit visual information…

Two documents mark the birth of Leiden University.

Many members of the Royal Family have studied at Leiden University and several have been awarded an honorary doctorate.

In this paper, Kantorowicz argues that reverse party favoritism exists. He exploits the fact that during the SARS-CoV-2 pandemic crisis, the Polish government was keen to launch postal voting in the presidential elections scheduled for May 2020.

The financial sector is an appealing target for hackers. For that reason, lawmakers and regulators are going to great lengths to make the sector more resilient to cyber attacks. One recent measure was the introduction of the Digital Operational Resilience Act (DORA). This new EU regulation is extremely…

Haunting the future through poetry

Who doesn't know him: the world-famous Dutch painter Rembrandt van Rijn. But did you also know that Rembrandt was a Leiden student? In 2019, Leiden University celebrated its 444th anniversary. In that lustrum year, which was also a Rembrandt year, we made the connection between Rembrandt and Leiden…

Perception of material culture, design and digital knowledge applications

Short introduction

Is blended care a feasible and effective treatment method for social anxiety in adolescence?

On 17 October 2019, Laure d'Hondt defended her thesis 'Addressing Industrial Pollution in Indonesia. The Nexus between Regulation and Redress seeking'. The doctoral research was supervised by prof. A.W. Bedner and dr. J.A.C. Vel.

Enabling volume-restricted metabolomics using next-generation microscale analytical tools.

Shining a new light on the Roman world

Do understudied animals contain hidden species?

This book aims to unravel some of the mysteries surrounding this exceptional group of larger-than-life Bronze Age blades.

Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée

Blended and hybrid teaching are presented as crucial in promoting teaching innovation, as well as more flexible study approaches allowing students to develop their own tailor-made study programmes. While the strategy document focuses on the positive aspects of digital teaching tools, no systematic study…

The LUGO team is part of the Administration and Central Services department of the university, with it falling under the Strategy and Academic Affairs department. Naturally, it falls into the sustainability team of the University, which consists of two full-time employees alongside the LUGO Team. The…

This thesis aims to demonstrate how the achromatic nature and design flexibility of liquid-crystal optics can be used to improve high-contrast imaging instruments to facilitate detailed exoplanet characterization.

The glycosylation reaction is a pivotal reaction in creating new and complex oligosaccharides.

This project aims at investigating the syntactic role of focus in ellipsis across languages.

How do different emotional expressions influence the behavior of other people in negotiations?

On 19 September 2023 Tabitha Speelman successfully defended a doctoral thesis and graduated.

Peter Flach is Professor of Artificial Intelligence at the University of Bristol. An internationally leading scholar in the evaluation and improvement of machine learning models using ROC analysis and calibration, he has also published on mining highly structured data, on knowledge-driven and explainable…

In the History of the Roman Emperors, what does Herodian’s method of composition consist of and how does it relate to his writing intention, particularly in terms of political and moral idea(l)s?

On 29 January 2019, Robbert van Eijk defended his thesis 'Web Privacy Measurement in Real-Time Bidding Systems, A Graph- Based Approach to RTB system classification'. The doctoral research was supervised by Prof. dr. H.J. van den Herik.

Promotor: C.A.M.J.J. van den Hondel, Co-promotor: Sandra de Weert

Previous research has found important inter-individual differences in the pharmacokinetics (PK) of morphine in special populations such as children, the morbidly obese or the critically ill.

Climate change is a challenge for both current and future generations. New biological resources have to be developed in order to meet the demand for energy as well as the demand for food.

The main focus of this research project is to investigate why people in Eastern Arabia chose to reuse ancient tombs and how this can be linked to collective memory.

Rembrandt painted the portraits of more Leiden alumni than we can show in the route. Discover who else posed for Rembrandt.

This book explores how public health concerns and political agendas influenced each other in the US over the past century.

On the 17th of June Rea Matsangou successfully defended a doctoral thesis and graduated.

In this article, Thomas Maguire, assistant professor at the Institute of Governance and Global Affairs, examines the intelligence of the US, British and Ukrainian governments and NATO partners concerning Russia and its war against Ukraine. This article discusses how and why governments communicate intelligence…

Archives were a common target during the Second World War, and hundreds suffered damages. Among these archival losses, the losses to medieval manuscript collections stand out.