This PhD dissertation examines international responsibility for the crime of aggression from a public international law perspective. Under customary international law, as well as the amendments to the Rome Statute of the International Criminal Court adopted in the Review Conference in Kampala in 2010,…

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There are five institutes at the Faculty of Social and Behavioural Sciences:

We are very happy to welcome you to spend a semester or year studying with us at the Faculty of Social and Behavioural Sciences. This website will provide you per programme with information on your course schedules and much more.

The Labour Law and Social Security department provides both bachelor’s level and master’s level teaching.

The Faculty of Social and Behavioural Sciences brings together high-quality research and outstanding teaching in the disciplines of cultural anthropology, education and child studies, political science, psychology, science and technology studies, as well as in multidisciplinary approaches.

Have you experienced or witnessed unacceptable or transgressive behaviour? The University has a page that gives information about what you can do yourself and which ‘helplines’ can assist you in this situation.

How does preschoolers’ play style relate to their aggressive impulses?

Day-to-day activities are important in the development of social identities, the establishment of social standing, and the communal understanding of societal rules. This perspective is broadly referred to as practice theory and relates to the power of an overarching social structure and the individual…

Promotor: R.C.M. Pelger Co-Promotor: G. van der Pluijm

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New Approaches to Understanding the Eastern Mediterranean during Byzantine and Ottoman Times

Also including: Wateringen 4 & Acquiring a taste.

Our mission: a positive impact. Our vision: community. By involving the world around us in our education and research we make a positive impact. We do this by applying Open Science.

A warm welcome to the Graduate School of Social and Behavioural Sciences at Leiden University.

This paper explores how citizenship is enacted and experienced in welfare encounters for Egyptian migrant parents in Paris, Amsterdam, and Milan, highlighting the importance of social citizenship and personal interactions in shaping belonging.

Leiden University, Department of Economics

In Sri Lanka, a prominent Singhalese Buddhist monk publicly proclaims that it is not a sin to kill Tamils. In Japan, the family register kept in a Buddhist temple and specifying the outcaste status of a lineage is provided to private detectives investigating the marriageability of a young woman. Throughout…

PhD defence

Leiden University social scientists have shown that customised intervention pays off. A new fundamental research-based approach in children who are in danger of going off the rails has delivered spectacular results.

The Faculty of Social and Behavioural Sciences provides its ca. 5000 students with a thorough education in the social and behavioural sciences. The student population is very diverse and international in nature.

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This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.

This study, Calypso, The Trinidadian Experience, has sought to establish links between calypso music and the construction and maintenance of identities, and to locate the genre as a mechanism (or as part of a broader mechanism) that has exerted on-going social influence within Trinidadian society…

Most degree programmes at the Faculty of Social and Behavioural Sciences are based in the Pieter de la Court building on the Wassenaarseweg in Leiden. Besides this location, some degree programmes are based in The Hague, at Campus The Hague’s Wijnhaven building.

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

How do old and new Information and Communication Technologies (ICTs) relate to new social and political movements in Central Africa? What does this tell us about Africa and the Information Age?

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

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…

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.

The more opportunities a child has to learn and develop, the stronger his or her future position in society. Leiden University investigates how the brain picks up information, and how learning processes can be influenced positively.

The roles of shame, guilt and social access in adolescent aggression

Book by Soledad Valdivia Rivera

Sarah Giest, Assistant Professor at Leiden University, and Ishani Mukherjee researched the topic of 'Behavioural Insights Teams (BITs) and Policy Change: An Exploration of Impact, Location, and Temporality of Policy Advice'.

Young children who are less empathetic than their peers are more likely to be aggressive when older. This is what Malou Noten concludes in her dissertation. PhD defence on 25 November.

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.…

Research in Leiden University’s Institute of Political Science focuses on the dynamics and the interaction of political institutions, individual decision-making, and collective behaviour.

This open access book brings together an eclectic cast of scholars in related disciplines to examine ageing in the Soviet Union, covering the practice of geriatrics, the science of gerontology, and the experience of growing old. Chapters in the book focus on concepts and themes that analyse Soviet ageing…

This project investigates the effects of the Asia-Pacific War (1931-1945) and the Korean War (1950-1953) on the production, distribution, preparation and consumption of food in transwar Japan and Korea.

This project explored the role of material culture, in casu painted plaster and its technologies, in expressing dynamic social identities and in forging complex interwoven human relationships in the context of the Middle to Late Bronze Age of the Aegean and East Mediterranean.

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

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

Some MPs are very active, while others are not. The number of proposals and questions that MPs in the Netherlands put forward is determined in part by the level of activity of their fellow committee members rather than by electoral incentive, which is the case in other countries.

This project explores the decline of shifting cultivation in Northeast India. What is the impact on society of people’s deepening engagement with markets and the state?

Videos shared on social media have become important evidence to hold perpetrators of human rights violations accountable. What does this increased use of digital open source evidence mean for the quality of international human rights accountability? Through an innovative experimental design, this project…

In 2021, the National Cyber Security Centre (NCSC) asked Leiden University to conduct a rapid review of best practices and possibilities for follow-up research on the integration of behavioral sciences in security by design methodologies and projects. This academic field is called security by behavioral…

Can socioeconomic differences in health behaviour be explained by competing goals and demands in everyday life?