In the Criminal Justice research programme, legal experts, criminal law experts and social scientists – many of whom are criminologists – collaborate on various projects. The research programme focuses on the content and form of decisions that are, can and may be taken in the criminal justice chain…

Sub-Saharan Africa has seen a significant rise in terrorist acts and radicalized youth since the appearance of Boko Haram in 2009 and the fall of Libya in 2012. This book investigates the deeper layers of radicalization in Sub-Saharan Africa, which is situated in a larger global tendency.

PhD defence

(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?

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…

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Het strategisch plan van de faculteit wiskunde en natuurwetenschappen (FWN) werd gepresenteerd tijdens de opening van het academisch jaar 2023-2024.

Lack of money impacts how a person takes financial decisions: now or preferably later. Procrastination and avoidance behaviours in turn have an effect on lack of money, which can result in a sense of loss of control. These are the findings of psychologist Leon Hilbert in his PhD research, although the…

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…

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’.

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.

In September 2023 Social Justice Research, a journal from Springer Nature, published a ‘Special Issue on Veteran Reflections’. Eight ‘veterans’ analysed the current status of justice research and suggested new directions and refinements. Herman Steensma, guest member of the section Social, Economic…

Together with Knud Andresen, Bart van der Steen recently published a volume titled A European Youth Revolt. European Perspectives on Youth Protest and Social Movements in the 1980s.

Loneliness and social isolation have become a significant problem in contemporary Japan. The financial burden associated with an ageing population has severely constrained the ability of local authorities to address the problem. As a result, policymakers have sought cost‐effective methods of tackling…

We study expressions of emotion and social decision making across species.

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.

Understanding others’ emotional behavior is essential for navigating daily social life. But how is such an understanding achieved? The eye-tracking study by Yung-Ting Tsou and colleagues shows that children with hearing loss adopt a unique visual strategy that makes uses of explicit visual information…

Programs that aim to reduce symptoms of social anxiety in children generally include multiple components, such as exposure and cognitive restructuring. It is unknown if separate components yield positive intervention effects in children or whether a combination of components is required.

Attitudes towards cultural heritage have long been characterised by an ‘endangerment sensibility’ concerned with preventing losses. Recently, however, critical heritage scholars have argued that loss can be generative, facilitating the formation of new values and attachments. Their arguments have focused…

A job thanks to COVID—something not many people can claim. But PhD candidate Vera Arntzen can. Over the past four years, she has mapped two crucial characteristics of SARS-CoV-2 infections. Thanks to her research, experts can now make well-informed decisions on matters like quarantine duration, which…

This research project is funded by a subsidy from Instituut Gak.

The Faculty of Social and Behavioural Sciences brings together high-quality research and outstanding teaching.

How does having limited access to the social world affect Deaf or Hard of Hearing (DHH) children’s emotional development? And in turn, how do impairments in emotional functioning affect social development and the development of psychopathology?

Book by Soledad Valdivia Rivera

This research aims to investigate how different social forces interact with hydropolitics in the Eastern Nile Basin and what are the constraints of engagement.

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

The Faculty of Social and Behavioural Sciences brings together high-quality research and outstanding mono- and multidisciplinary teaching.

Within the Faculty of Social and Behavioural Sciences (FSW), D&I translates as the diversity of backgrounds, perspectives, and identities among both students and staff.

The Faculty of Social and Behavioural Sciences brings together high-quality research and outstanding mono- and multidisciplinary teaching.

The current study focuses on Walpole’s social network and the language as contained in the letters of the network members.

The making of sacrifices seems part and parcel of any elite sportsperson’s life. Remarkably, the insights that we find in the current literature in social sport studies are not able to make sense of the references to sacrifice in the data that emerged in the context of this study on the social significance…

Songbirds as vocal learners learn their songs and song preference from social tutors⁠. Tutor choice for both song and preference learning are important to characterize for understanding individual learning performance and cultural transmission of song⁠.

What is the role of emotion regulation in coping with interpersonal feedback?

Deepfakes are videos that have been manipulated to replace one person’s likeness with that of another. They can be difficult to distinguish from authentic videos. In our study, we found that people who score high on conspiracy thinking and people who use social media more are better at distinguishing…

The aim of this thesis was to study the link between hearing loss, language skills, and social functioning in deaf and hard of hearing (DHH) children. Sufficient language skills are an essential prerequisite to develop appropriate communication skills, in order to join in conversations with others.…

To argue that people can control the relative contributions of goal-driven and stimulus-driven processes to decision-making and action selection.

D.P. Kok defended his thesis on 10 October 2017

With the emergence of online social networks (OSNs), the way people create and share information has changed, which becomes faster and broader than traditional social media.