On 5 September 2019, Jennifer Doekhie defended her thesis 'Dimensions of desistance: A qualitative longitudinal analysis of different dimensions of the desistance process among long-term prisoners in the Netherlands'. The doctoral research was supervised by Prof. P. Nieuwbeerta.

This article written by Marieke Liem & Alexander Kamprad investigates the relationship between terrorism and interpersonal violence. They conducted cross-national analyses on the effects of terrorism mortality rates on homicide rates. Results showed that terrorism appears to be robustly and positively…

On 2 and 3 September 2016, the International Conference on ASEAN Development (ICAD) 2016 took place in Leiden. The conference aimed to draw comparative lessons from the EU for the development of the ASEAN Economic Community, which was launched in 2015.

The global agri-food system plays a critical role in food security and environmental issues.

On March 12th, Jonathan Brown succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Jonathan on this great result.

The brand-new American President Donald Trump delivered his inaugural speech on 20 January. There was little sign of conciliation and he was liberal with the truth, in the opinion of a number of Leiden academics. One professor is more positive: 'He wants to take on radical Islam.'

Analysing the ways in which immigration structurally challenges and changes the organization and conceptual boundaries of national welfare states.

Next April, Leiden will host the seventh annual international Survival Analysis for Junior Researchers conference (SAfJR2018). This three-day event is aimed at career-young statisticians with an interest in the application and development of time-to-event analysis and related topics. The conference…

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

The group develops and teaches the large majority of methodological courses in all phases of the program Education and Child Studies. This program rests on a strong empirical-analytical tradition. This means that research methodology and statistics, linked with educational research questions, have a…

The research programme Statistical Science is concerned with the analysis and interpretation of masses of data, the quantification of uncertainty using probability models, and the development and benchmarking of algorithms and methods with these aims.

The dental remains of 25 enslaved Africans from the site of Newton's Plantation, on Barbados, were subjected to isotope analysis. Previous research had pointed out that the locally born individuals were subjected to high concentrations of lead poisoning. A new study, done by Dr Jason Laffoon among others…

To what extent are there differences between countries in and outside the European Union and the Schengen area in the level of crimmigration, the merger between migration control and crime control, and to what extent can these differences be explained by the way in which state and non-state actors in…

Yuxi Nie defended her thesis on 15 October 2019.

Speed skating coach and human movement scientist Jac Orie has been capturing all details about the performance of 'his' skaters for fifteen years. Thanks to data scientist Arno Knobbe, who calculates the collected data in new ways, Orie can train his team even smarter in the run-up to the Olympic Winter…

As a result of the current coronavirus outbreak, almost all of our teaching is done online. However, even before this, several teachers were involved with remote education. Madi Ditmars and Maurits Berger talk about their experiences.

Sevil Cakir-Kilincoglu defended her thesis on 18 December 2019

To what extent can literary strategies deepen and enhance research in and through the visual and performing arts, as well as for research in academia?

In several Mediterranean regions archaeological sites have been mapped by fieldwalking surveys, producing large amounts of data. These legacy site-based survey data represent an important resource to study ancient settlement organization. Methodological procedures are necessary to cope with the limits…

The aim of the project is to contribute to the process of archive formation ongoing in Post-Apartheid South Africa through the inclusion of photographs that have been either unacknowledged or excised from the national canon.

The emissions of the Chinese industrial sector alone comprise 24.1% of global emissions (7.8 GtCyr−1 in 2015). This makes Chinese industrial emissions of unique national and international relevance in climate policy. This study reports a literature survey that quantitatively describes the evolution…

Networks play an important role in various studies, ranging from analysing epidemics in human populations to studying connectivity in electrical circuits. Vincent Traag contributes to the development of igraph, a popular package for analysing large networks.

What are trait-trait relationships in wetlands? To what extent the so-called leaf economics traits deviate from terrestrial ecosystems? How traits specific to wetland plant relate to plant strategies? What’s the relationship between wetland plant traits to the ecosystem functioning (e.g. productivity,…

We focus on natural products research, traditional medicine, ethnobotany and phytochemistry.

igraph, an important open source network analysis library, will receive two grants of $400,000 (approximately €340,000) over the course of the next two years.

Violence during war often involves upswings and downturns that have, to date, been insufficiently explained. Why does violence at a particular point in time increase in intensity and why do actors in war decrease the level of violence at other points? Duyvesteyn discusses the potential explanatory variables…

The production, use, and exchange of bodily ornaments through the lenses of the microscope