Terrorist groups adapt to environmental changes to maintain power. This project provides new insights by developing a theory of strategic target selection and using big data analytics and machine learning to test these hypotheses.

On Thursday 30 May, Leiden University hosts a workshop to foster collaborations to improve the governance of European textile waste export. Different stakeholders, including municipalities, associations of textile collectors and sorters, industry and consumers associations, are warmly invited to join…

Behavioral and neural mechanisms underlying risky decision-making in adolescents

On the 15th of July Sawako Takemura successfully defended a doctoral thesis and graduated.

In this project, researchers from computer science, law, psychology, and public administration research in practice how artificial intelligence (AI) can be leveraged to make decision-making in the security domain more effective, while also keeping it safe and accountable.

The car we buy is made out of thousands of components, which are produced using different types of materials. These materials need to be sourced from different places, sent to production facilities and assembled. Once the car is dismissed, the components need to be taken care of by either reusing, recycling…

This article by Danielle Goldwert, Sara Constantino, Jaroslaw Kantorowicz and colleagues presents one of the largest behavioral 'megastudies' to date, testing how different interventions can stimulate public, political and financial climate advocacy.

The lecture series “Humanity in the Automated State” held its second session on January 12, 2026, at Leiden Law School. Dr. Aya Rizk from Linköping University brought her expertise on Information Systems whit a focus on how digital technologies and data drive organizational change, particularly in decision-making…

Ben Van Rompuy, associate professor of European Competiton Law, appeared on 15 April as an expert before the European Parliament's Committee on the Internal Market and Consumer Protection and also authored a briefing paper with recommendations to effectively address Territorial Supply Constraints…

Promotor: J.M. van den Broek Co-promotor: M.C. de Vries

This article investigates which factors most influence individuals’ decisions to engage in conversations about risk.

(1) What are the institutional factors that influence AI adoption and implementation? and (2) How does AI reshape the exercise of administrative discretion within public organisations, and how do adoption and implementation choices moderate these effects?

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

A recent publication by Niek Strohmaier, Assistant Professor of Empirical Legal Studies (ELS) Lab @Leiden, together with Professor Jan Adriaanse, Professor Kees van den Bos and Associate Professor Helen Pluut, has been accepted by the Journal of Applied Social Psychology.

Despite being the object of intense study, embryonic development has been difficult to model due to a number of reasons. First, complex tissues can be comprised of many cell types, of which we probably only know a subset.

There is a need for alternative methods to replace, reduce and refine (3R) animal experimentation. Combining experimental data from high-throughput in vitro studies with in silico modeling is a promising approach to unravel the effect of chemicals on living cells and to gain a better understanding of…

This paper develops a novel theoretical framework for the conduct of postmortems after major foreign policy surprises for the European Union and its member states.

Humans share meaning through language. Over time, repeated interactions have shaped languages into forms that match our cognitive preferences, making them structured, expressive, easy to learn, and ultimately, meaningful.

To easily take part in group decision-making research, Jörg Gross, Assistent Professor Social and Organisational Psychology, launched a platform that allows students at the social interaction lab. Sign up to receive invitations if you are interested in taking part in on-going scientific studies in the…

In the master’s specialisation in Economic and Consumer Psychology, students study the psychological mechanisms that underlie many of our choices and decisions concerning consumption and other economic behaviours.

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.

In 2009-2010, the notion of a more ‘assertive’ China emerged in Western discourse, a viewpoint that China vehemently rejects. Nevertheless, especially after Xi Jinping rose to power in 2012, it is clear that China has abandoned its long-held foreign policy doctrine of ‘keeping a low profile.’

Prof. Ottervanger, professor emeritus of European Law and Dutch Competition Law has analysed 36 final court judgments concerning decisions by the Netherlands Authority for Consumers & Markets (ACM) in competition cases. The report was part of the review of the ACM that was conducted by the Dutch Ministry…

What is the iconography of propaganda specifically as it relates to the historical development of political ideologies in modern Egypt and how was/is this propaganda disseminated among creative fields such as cinema, art, monuments, architecture, and literature?

A former employee of Leiden University breached academic integrity. This is the conclusion of the University’s Academic Integrity Committee in its recommendation to the Executive Board on 11 January 2019.

How public service motivation and professionalism affect decision-making in dilemma situations. Individuals who work in the public sector see themselves confronted with conflicting values, contradictory demands, and the need to serve an at times difficult to define ‘public interest’.

To what extent is the legislation and use of pre-trial detention of juveniles in the Netherlands in compliance with international children’s rights standards?

The association agreement between the EU and Ukraine is highly important for peace in Ukraine, and it is therefore essential that Europe weathers these difficult times. These were the words of Ukrainian President Petro Poroshenko on 27 November during his Europe Lecture at Leiden University.

The price of products and services plays an enormous role in society, and therefore also in the legal domain, according to Professor of Business Studies. Inaugural lecture 2 June.

Politicians' statements often involve emotions, shaping public perceptions. This study highlights the role of emotions in EU foreign policy.

Municipalities are increasingly attempting to solve problems without issuing decisions. A notification procedure (notification – investigation – application – decision) has recently been introduced that replaces part of the traditional application procedure. Ymre Schuurmans, Professor of Constitutional…

When to launch a next-generation product in a competitive market and how much capacity should be allocated to it

How to make educational innovations practical for teachers