This longitudinal study is focused on neurodevelopmental problems in young children with XXY, XXX and XYY, aged 1 to 6 years.

Leiden University is building on its future in Leiden. As a means to achieving this aim, the University will be investing in excess of 100 million euros over the coming years in constructing the new accommodation for the Faculty of Humanities at Witte Singel and Doelensteeg. The University aims with…

This thesis comprises four closely related interpretative studies and set out to answer the compound question: ‘How do teachers interpret their classroom interactions in terms of their pupils’ best interest?’

This thesis utilises the exceptional sensitivity and resolution of LOFAR to explore the low-frequency Universe, while simultaneously advancing the telescope's capabilities to enable new scientific discovery.

Global Environmental Extensions Multi-Regional Input-Output (EE-MRIO) analysis is often used to analyze how changes in global and national demand for products lead to socioeconomic and environmental impacts at the national level.

Developing robust and comprehensive analytical methods to size and quantify subvisible particles in biopharmaceutical products.

An examination of rationales and core practices of first-grade Worldview/Religious Education teachers focused on their students' philosophical identity development

The Institute for Advanced Study has appointed astronomer and chemist Ewine Fleur van Dishoeck to its Board of Trustees, effective 5 May, 2018.

The Leiden University Graduate School of Archaeology (GSA) coordinates the admission and registration procedures of all PhD candidates with a PhD graduation planned at the Faculty of Archaeology. The GSA monitors the whole PhD track, from admission to graduation, supports (financially) both PhD ‘bottom…

Research into the evolutionary backgrounds of our diets can help us make the right choices in diet, health and lifestyle.

Key publications of the Aging and Immunity group

Res Publica is a Dutch language journal for political science, public administration, European and international politics, political sociology, and communication science.

Public sector decision-makers operate amidst an abundance of information and unclear political objectives. Attention is the sine qua non of policy-making: What is attended to can be addressed in policy responses; what is overlooked or goes unnoticed cannot. Despite its importance, public administration…

The central research question in this study was twofold: 1. To what extent are the three reconstruction models useful in a reconstruction of the public decision-making process concerning decentralized government between 1947 and 2014? 2. To what extent does the reconstruction of this public decision-making…

Acta Politica is the official journal of the Dutch Political Science Association.

A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.

The Faculty of Archaeology at Leiden University offers education in Human Osteoarchaeology. We offer courses in our one-year Master’s track in Archaeological Science, resulting in a Master of Science degree after completion.

On Thursday 29 January 2026 Uğur Derin successfully defended a doctoral thesis and graduated.

Indo-European is the name of the language family to which English belongs, along with many sub-families such as Germanic languages and Romance languages. In this course, you will delve into the structure and origins of these branches, the oldest languages belonging to the language family, linguistic…

Galaxy intrinsic alignments induce a major astrophysical contamination to weak gravitational lensing measurements and need to be modelled and mitigated when extracting cosmological information from such measurements.

On Thursday 7 November 2024 Vaudine England successfully defended a doctoral thesis and graduated.

On Wednesday 20 November 2024 Sara Mirahmadi successfully defended a doctoral thesis and graduated.

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

On Wednesday 3 September 2025 Yu Ai successfully defended a doctoral thesis and graduated.

How do lecturer-researchers at Dutch Universities of Applied Sciences perceive their academic identity after expanding their teaching-only work portfolios to include researcher roles, and how do they navigate attached identity-based role transitions, while balancing personal goals, institutional expectations,…

SuperCode: Sustainability PER AI-driven CO-DEsign

The SPS Monitor measures your sensory stimulus sensitivity. Sensory stimulus sensitivity refers to one's sensitivity to subtle environmental stimuli, the depth and intensity with which these stimuli are processed and the impact this has on one's functioning.

The Heritage Quest project is a citizen science project in which volunteers participate in archaeological research. Discover the aims and methodology of the project, the sub-projects and how to participate yourself.

The centralized LUMC biobank department helps to implement rules and regulations regarding informed consent, collection, storage and distribution of biomaterials and data for biobanking.

Ecotox is a stimulating top-facility that provides an integrative research environment around the topic of ecotoxicological testing and experimental research. Research focus: Dose-response modelling Mode-of-actions and mechanism-of-actions Test method development, in view of targets in AOPs (adverse…

On 20 September 2023 Mark van de Water successfully defended a doctoral thesis and graduated.

Sea-ing Africa explores how infrastructure in Ghana and Morocco shapes development, blending geopolitics, economics, and culture, impacting local and societal dynamics.

In an age before GoogleDocs and LinkedIn, 19th-century scholars relied on letter-writing for collaboration, peer-feedback and the building and sustaining of academic networks. Letters were a quick, efficient way to share insights, data and discoveries. Scholarly correspondence thus allows a vital behind-the-scenes…

Sub-Saharan Africa has seen a significant rise in terrorist acts and radicalized youth since the appearance of Boko Haram in 2009 and the fall of Libya in 2012. This book investigates the deeper layers of radicalization in Sub-Saharan Africa, which is situated in a larger global tendency.

On Thursday 28 March 2024 Said Reza Huseini successfully defended a doctoral thesis and graduated.

What is the effectiveness of two school-based skills-training programs in promoting mental health?

In this thesis, single-cell approaches were applied to characterize the impact of aging on the immunological B cell landscape in different models of atherosclerotic cardiovascular disease, with the goal to identify and study new B cell-associated biomarkers and therapeutic targets to halt atherosclerosis…

On Wednesday 11 June 2025 Steffie van Gompel successfully defended a doctoral thesis and graduated.

It is multi-media month for master’s students in Journalism and New Media. This means they are on the streets, armed with pen and paper or tablet, smart phone and camera. In the ‘Leiden Neighbourhoods’ project, master’s students are giving their perspective on local area news for the Leidsch Dagblad,…

Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.

Promotores: P. Stevenhagen, L. van Geemen Co-promotor: R.M. van Luijk

The Heritage Quest project is a citizen science project in which volunteers participate in archaeological research.