This thesis describes a study from both a theoreticaL and an experimental point of view.

Which intervention technique is more effective in reducing public speaking anxiety in children aged 9 – 12 years, exposure or restructuring cognitions?

On December 11th, Andreea Geambasu succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Andreea on this great result.

In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…

On the 16th of June Patrtick Harrison successfully defended a doctoral thesis and graduated.

This dissertation provides an up to date description of the Indo European lexical stock of Armenian (ca. 500 entries) with systematic inclusion of unused data that are found in Armenian dialects.

What does the daily life of those who travelled to Syria to join jihadist groups look like? Destination Syria, a new ISGA report, provides answers to this question

Promotor: A. Kros

This thesis explores how electron paramagnetic resonance (EPR) spectroscopy can be used to investigate key biochemical processes.

Alumnus Robert van Asten has been an MP for D66 since 2025. He studied Tax Law at Leiden University from 1997 to 2005. After a career in that field, he switched to local politics and later national politics.

Promotor: M.A.G.J. Orrit

Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).

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

Lecture, Global Questions Seminar

The European Research Council (ERC) has awarded Nathaniel Martin a Proof of Concept (PoC) grant. With it, his group aims to make a dangerous but potent antibiotic less toxic. He receives €150.000.

On Wednesday 31 August 2022, the graduation ceremony of the BSc Security Studies took place. The ceremony was opened by programme director Daan Weggemans.

Quantum computing represents a fundamentally new computational paradigm, capable of addressing problems that are intractable for classical computers.

Impressions by Martin Küster, Master of Arts.

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

Leiden University is home to over a hundred specialists studying the Middle Ages and the Early Modern period. From 2017-2018 onwards, they will join forces to offer two new options for specialisation within existing MA programmes: Medieval Studies and Early Modern Studies.

In 2019, Federico Cappadona was one of the first students to enroll in the new master’s specialisation Applied Archaeology. He recently graduated and he is happy to share his experience.

Can SMILE, our multi-component intervention, which combines cognitive-behavioural therapy for insomnia, mindfulness, stress, and lifestyle components, improve sleep quality? Can it also improve mood and quality of life and prevent depression and anxiety in the long term?

In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

Promotor: M. Ubbink, Co-promotor: G. Siegal

With the recent rise and fall of IS, academics and policy makers around the world are expressing concerns about the fate of children of former foreign fighters. Will they follow in their parents’ footsteps? In this paper, Layla van Wieringen, Daan Weggemans and Marieke Liem argue that in light of this…

How do educational philosophies, discourses and practices spread around the globe, and how are they transformed and adapted locally?

The main aim of my Ph.D. thesis is to further explore the value of using early developing zebrafish larvae (up to 5 dpf) as a model to study anxiety-like behaviour and their pharmacological modulation with drugs.

Interview in the popular journal for the agricultural sector Nieuwe Oogst with CML-researcher Martina Vijver about the Dutch policy on pesticides and it’s possible conflicts with the aims for clear surface and groundwater.

By spreading fake news via TV spots and Twitter with the use of Social Bots, Pascal professor Heike Trautmann is investigating the characteristics of fake news. She is calling on Leiden researchers to cooperate in the project.

What would happen if there were fewer migrant workers in the Netherlands? Olaf van Vliet, Professor of Economics, discussed this question on Dutch news site NU.nl.

This November, Leiden Jewish Studies Network has presented the Best Thesis in Jewish Studies award to a highly talented Leiden graduate, Lotte-Sofie Groenendijk, and awarded an honourable mention to Nasreen Javanjoo.

On Friday 7 March 2025 Adam Knight successfully defended a doctoral thesis and graduated.

On Wednesday 14 May 2025 Remzi Çakırlar successfully defended a doctoral thesis and graduated.

Organised in four separate sessions throughout the day, and broadcast live online to guests and families who could not join, a total of 260 students received their Bachelor’s Diploma of International Studies on 28 August 2020 at the graduation ceremony in the historic Pieterskerk in Leiden.

The Board of Governors of Leiden University has confirmed the appointment of Professor André Gerrits (Institute for History, currently in the field of Russian Politics and History) to the field of International Studies and Global Politics, commencing October 1st 2015.

The urban graveyard presents several studies in which the results of older archaeological and osteoarchaeological research are compared to more recent excavation data from several Dutch, Belgian and Danish cities and towns.

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: H.M. Cuppen, S. Ioppolo

On Tuesday 3 September 2024 Straton Papagianneas successfully defended a doctoral thesis and graduated.

On Friday 22 November 2024 Ye Jiang successfully defended a doctoral thesis and graduated.