Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…

Misinformation has emerged as a major societal concern. But why do citizens contribute to the dissemination of falsehoods online?

Endangered languages can survive if they are taught properly to new speakers, such as people with a migrant background. This is what Professor by Special Appointment Felix Ameka will say in his inaugural lecture on 30 September. Dutch people can do their bit by being less ‘polite’ to people whose mother…

Which features characterize speakers’ voices, and how are these features determined by what a speaker is saying?

Article in the journal Irish Political Studies discussing the challenge of aggregating opinion polls and presenting a method to better model major sudden political and societal events. This can can enhance opinion poll reporting in the media.

This thesis develops statistical methods for the analysis of high dimensional data: high dimensional networks reconstruction (Chapters 1-4), incorporation of prior information in networks reconstruction (Chapters 2-4), incorporation of prior knowledge in genetic association studies (Chapter 3).

Promotores: W.T. de Groot, M. Tchuenté, Co-promotor: J.P. Cheylan

This collection, edited by Sophie Vériter, Monica Kaminska, Dennis Broeders and Joachim Koops, includes six papers exploring and investigating European responses to COVID-related disinformation, specifically the responses of France, Sweden, Germany, the United Kingdom, Serbia, and Hungary.

Esteban Szmulewicz, PhD candidate at the Department of Constitutional and Administrative Law of Leiden University and expert on decentralisation issues, gave an online presentation of his research before the subcommittee on Political System, Constitutional Reform and Form of State in Chile and reported…

In this dissertation, we study partition-based models that can be used both for interpretable predictive modeling and for understanding data via interpretable patterns.

An experimental comparison of the impact of liberal norms on a population residing and socialised within a democracy (the Netherlands) with a population in an autocracy (China) and their respective supports for war with another state shows that the level of liberal norms in the democratic experimental…

From colonial times through to the present day, large numbers of Javanese have left their homes to settle in other parts of Indonesia or much further afield. Frequently this dispersion was forced, often with traumatic results.

In this article, Gerrit Dijkstra and Jos Raadschelders from the Institute of Public Administration, argue that Bosnia-Herzegovina survives so far on the basis of negative legitimacy.

This book addresses the definition of history and how people are influenced by it.

This book explores the Indian tradition of liberalism through a critical intellectual biography of Valangaiman Sankaranarayana Srinivasa Sastri (1869–1946).

Growth hormone profiles are pulsatile and highly variable between individuals, limiting the implementation of mathemathical models to quantify an individual's secretion.

Jessica Vance Roitman and Wouter Veenendaal, researchers at the KITLV/Royal Netherlands Institute of Southeast Asian and Caribbean Studies, investigate the origins, development, and consolidation of political oligarchy in the Caribbean island nation of St. Maarten.

Citizens in multiple crime-ridden countries strongly support the militarization of security—that is, placing the military in charge of traditional policing duties. Yet, we know little about the determinants of such support. Do people approve of militarization even in the face of human fatalities? Political…

This project investigates how early print media covered distant but urgent geopolitical conflicts, using newspapers from the Low Countries, north and south.

Do you want to know more about Cultural Anthropology and Development Sociology and what it is like to study in Leiden? Come to our online or on campus information events.

Managing scarcity to serve the public interest is a classic government task. An important way to execute this task is by allocating individual rights that are only available in limited quantities, such as CO2 emission allowances, gambling licences, subsidies, radio frequencies, public contracts and…

Terrorism experts Daan Weggemans (Leiden University) and Beatrice de Graaf (Utrecht University) conducted one of the first scientific studies on the societal reintegration of jihadist former detainees. They showed that the reintegration process isn't without problems. Their conlusions are presented…

Latest technological developments in data mining and profiling.

In theory, states can gain security by acquiring internal arms or external allies. Yet the empirical literature offers mixed findings: some studies find arms and allies to be substitutes, while others find them to be complements. Political scientists Matthew Digiuseppe (Leiden University) and Paul Poast…

In the context of the summer school "Medieval Religon" prof. Christopher M. Bellitto (Kean University) will give a keynote lecture on June 26th: "Politics and Religion in the Middle Ages and Today: Thoughts of an American Medievalist". This lecture is also open to those interested who do not participate…

More parties are standing in this national election than at any point since the Second World War. Simon Otjes, an assistant professor in Dutch Politics who conducts research into new political parties, explains why this is. He also predicts which new parties stand a serious chance of winning a seat…

PhD candidates from Institutions for Conflict Resolution (COI), Eva Grosfeld (Leiden University), Marlou Overheul (Utrecht University), and Amarins Jansma (social psychology, Utrecht University), won the KLI seed money grant for research on the influence of politically sensitive cases on public trust…

In the 2015 QS World University rankings the area of Politics and International Studies at Leiden University, which includes Public Administration, has climbed to the 23rd place worldwide. Politics and International Studies at Leiden University holds the first position in The Netherlands and a top 10…

Political scientist Corinna Jentzsch received an NWO Veni grant for her research on the conditions of collaboration between militias and state forces and its consequences for safety and political order.

Political Scientist Gisela Hirschmann (Leiden University) asks how international organisations can be compelled to comply with respect human rights. She finds that this is done through ‘pluralist accountability’: external third parties such as courts, NGOs, or regional organisations holding international…

Political scientists Rebekah Tromble and Michael Meffert (Leiden University) address the question why certain frames persist over time in the media while others fade away and still others disappear very quickly. They suggest an approach based in event-history methodologies for assessing the causes of…

Political scientists Joop van Holsteyn and Tom Louwerse (Leiden University) find that the Dutch government is having a hard time coping with referendum outcomes in general, and ‘anti-European’ sentiments among voters in particular.

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

This thesis discusses the constructions relevant to Object Shift from the intonational perspective, by presenting experimental data from all the Scandinavian languages.

On 30 August - 3 September 2021, Valentina Carraro and Jan Aart Scholte presented their papers during the General Conference of the European Consortium for Political Research (ECPR) in Innsbruck, Austria.

This paper written by Vydra and Kantorowicz answers the research question ‘What policy-relevant information does Twitter contain?’ as well as the research question ‘How does this information change between a period of normalcy and a period of crisis?’

By analysing neglected (continental) spy centres and integrating these groups of female intelligencers into the traditional, male-orientated historical narratives, this project will proceed towards a gendered history of early modern espionage.

This open access book explores the role of continuity in political processes and practices during the Age of Revolutions.

This video accompanies the article "Navigating Discretion: A Diplomatic Practice in Moments of Socio-political Rupture", published in Vol. 14, Issue 4 of The Hague Journal of Diplomacy.

Under what circumstances is politicization more likely to occur than others, and what impact does politicization have on government legitimacy and performance?

Rising geopolitical tensions are causing states and national elites to innovate their use of the past for present-day political ends. This is certainly true for the People’s Republic of China, which celebrated its 75th anniversary in 2024 amid mounting superpower rivalry, ideological tensions with the…

Ideology and Christianity in Japan shows the major role played by Christian-related discourse in the formation of early-modern and modern Japanese political ideology.