This dissertation explores how domestic political power struggles in Greece and Turkey during the Cold War engaged with the ongoing conflict in Cyprus and aims to demonstrate how socialist parties in Greece and Turkey struggled with the concept of the “nation” in battling for power and political positioning…

SAILS aims to forge links between the different disciplines at the University and to initiate new academic partnerships.

Why are not all children equally responsive to variations in the social environment?

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

It is often claimed that social media can contribute to democratic decision-making by bringing politicians and citizens into dialogue with one another. But is this potential always realised, and how? Most researchers look at politicians and their online communication strategies. In this New Media &…

Political scientist Rebekah Tromble (Leiden University) and computational sociolinguist Dirk Hovy (University of Copenhagen) analyse how much hostility and sexism Clinton faces on Twitter, as well as who seems to be behind such attacks.

Read more about the International Network Open Science & Scholarship Communities in our Vision and Mission statements.

Have you ever experienced the feeling of awkwardness when attending a party where you didn’t know anybody? Ever felt shy at a party within the first few minutes? While this feeling is labelled loosely as feeling socially anxious, social anxiety disorder goes to a much further extent.

Corporate R&D organizations and their relation to academic laboratories.

Parents may pass anxiety onto their offspring by exposing them to anxious behaviors in novel situations. Just as the parents’ anxious signals lead to anxiety, parents’ confident signals can ward off anxiety in the offspring. This project is seeking a new way to break anxiety transmission in the family…

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The master’s specialisation Bio-Pharmaceutical Sciences and Industrial Pharmacy at Leiden University examines safety and quality control in the production of medicinal products, and prepares students for a career in Quality Assurance and Quality Control in the biotechnological and pharmaceutical ind…

On 11 January 2019, Maastricht University and the University of Groningen hosted a workshop on the regulation of social media influencers.

Mateo Cohen (research assistant at the Open University of Israel and PhD candidate at Leiden University’s Institute of Political Science) studied arguments articulated by diverse members of the Right-Wing elite in Israel and explains how these views lead to the rejection of a two-state solution and…

The master’s specialisation Bio-Pharmaceutical Sciences and Business Studies at Leiden University combines fundamental and applied research with different aspects of business studies.

Study information

Patterned detectors are an existing technology that can be found in almost all color cameras.

Here I propose to study the relationship between autonomic pupil-synchronisation and trust, at the behavioural and neural level, and examine a targeted set of possible contextual moderators.

On Wednesday 3 July 2024 Renata Schiavo successfully defended a doctoral thesis and graduated.

Enhancing social inclusion through developing methods and analytical tools for understanding and reasoning about such phenomena based on sensor data.

In this project we looked at children and their relationships with peers. We wanted to learn more about the well-being of children and how this is linked to topics such as friendships, anxiety and social skills. By looking at these topics and their interplay, we can learn more about how children are…

Big Science, commonly defined as conventional science made big in three dimensions, namely organizations, machines, and politics, brings a plethora of different stakeholders together, often for a long period of time. This includes policymakers, scientists, (scientific) managers as well as local “host”…

This book explores how physicists, astronomers, chemists, and historians in the late nineteenth and early twentieth centuries employed ‘epistemic virtues’ such as accuracy, objectivity, and intellectual courage. In doing so, it takes the first step in providing an integrated history of the sciences…

This dissertation describes several studies concerning the research-teaching nexus in the sciences.

Carl Li defended his thesis on 30 June 2015

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OpenML empowers scientists to conduct transparent, reproducible, and collaborative AI-driven research.

This article introduces the special issue on ‘Digital Activism’ by exploring some of the trends in social media activism and scholarship thereof. The authors ask to what extent this literature helps us understand Asian forms of online activism, which forms of activism have relatively done well, and…

Astronomer and Marxist Anton Pannekoek was a remarkable figure. This book aims to study the connections between his life as a socialist theorist and as a pioneering scientist through the prism of Pannekoek's biography.

Political scientist Maurits de Jongh (Leiden University/Sciences Po) argues that political liberalism is self-defeating as a framework of justification for liberal conceptions of justice. He explores how the framework's self-imposed criterion of acceptability in the eyes of all reasonable citizens leads…

Political scientist Nicholas Vrousalis (Leiden University) reviews the recent literature on exploitation. He istinguishes between three main species of exploitation theory: (a) teleology-based (including harm and mutual benefit) accounts, (b) respect-based (including mere means, force, rights, and fairness)…

What interests and motives shape how people cooperate, clash and place their trust in one another? For more than 36 years, Van Dijk explored these questions using experimental games in the laboratory. 'Games strip complex issues back to their core.'

Data science is now growing fast in many places, but scholars at Leiden University have been developing data science techniques for a long time already. Thanks to their broad-based expertise, Leiden statisticians are currently combining the achievements in statistics with the latest methods of statistical…

Leiden psychologist Wilco van Dijk and communication scientist Jaap Ouwerkerk of VU University Amsterdam published a book about the emotion Schadenfreude. The authors describe what the emotion Schadenfreude really is, when people experience the emotion, and what role it plays in social relations.

How were (post) colonial migrants included in post-war welfare systems?

This project will transform OpenML, a platform for sharing and creating datasets and AI models transparently and collaboratively, into a next-generation open science infrastructure.

KWR Watercycle Research Institute and the Centre for Science and Technology Studies (CWTS) at Leiden University are collaborating in the area of social impact.