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

Developmental and Educational psychology is concerned with the developmental course and dynamics of cognition, self-regulation, and emotional competence, and the implications for educational and clinical practice.

In this thesis, dynamic testing principles were applied to examine young children's potential for learning. Our studies focused on the role of cognitive flexibility, to further increase our understanding of the cognitive processes involved in children's ability to learn from instruction and feedback,…

On Thursday 16 November 2017, Lalin Kovudhikulrungsri defended her doctoral thesis entitled ‘The Right to Travel by Air of Persons with Disabilities’. The supervisors are Professor P.M.J. Mendes de Leon and Professor A.C. Hendriks.

On Tuesday 19 December 2017 Anneloes Kuiper-Slendebroek defended her doctoral thesis 'Rechter over Grenzen' which deals with the application and interpretation of international law in Dutch private law. Supervisor is Martijn Polak, co-supervisor is Jeroen van der Weide.

On Wednesday 13 December 2017 René Hage defended his doctoral thesis entitled ‘Handhaving van privaatrecht door toezichthouders’ (Enforcement of private law by regulatory authorities).

On Thursday 11 January 2018, Xiang Li defended her doctoral thesis: “Collective Labour Rights and Collective Labour Relations of China”. The supervisors are Professor Guus Heerma van Voss and Professor Barend Barentsen.

Leiden University’s Annual Report covers education, research, innovation, knowledge valorisation, infrastructure, staff and finances.

On Wednesday 13 December, Melanie Fink defended her doctoral thesis ‘Frontex and Human Rights: Responsibility in “Multi-Actor Situations” under the ECHR and EU Public Liability Law’. The supervisors are Rick Lawson and Jorrit Rijpma from Leiden, as well as Manfred Nowak, and Stephan Wittich from the…

On 13 September 2017, Tess de Jong defended her PhD Thesis: 'Procedurele waarborgen in materiële EVRM-rechten'. The supervisors are prof. mr. T. (Tom) Barkhuysen and prof. mr. Y.E. (Ymre) Schuurmans.

On Thursday 16 November, Dirk Broekhuijsen defended his doctoral thesis entitled ‘A multilateral tax treaty: designing an instrument to modernise international tax law’. The supervisors are Professor F.A. Engelen and Professor S.C.W. Douma.

Africa has a population of 1.5 billion people. By 2050, this number is projected to rise to 2.5 billion. The continent’s impact on the global economy, societies but also on the environment, will therefore increase drastically.

Leiden Institute of Advanced Computer Science (LIACS)

We perform multidisciplinary research at molecular, cellular, and organismal levels of animal biology to increase fundamental understanding of health and disease.

On 29 June 2017, Carl Mair defended his PhD dissertation “Taking Technological Infrastructure Seriously”. The supervisors are Professor A. Schmidt and Professor G.J. Zwenne.

On 27 June 2017, Daniel Dimov defended his PhD dissertation “Crowdsourced Online Dispute Resolution”. The supervisors are Professor H.J. van den Herik and Professor A.R. Lodder.

On Wednesday 13 December 2017 Jaap Wieland defended his doctoral thesis entitled ‘De bescherming van concurrentiebelangen in het bestuursrecht’ (the Protection of Competition Interests in Administrative Law).

The Center studies the social, legal and normative impact of emerging digital technologies.

The Europa Institute of Leiden University is one of the oldest academic institutes specialised in the law of the European Union and the European Convention on Human Rights; it was established in 1957, the same year as the European Economic Community itself.

The Institute of Political Science is a vibrant department with nearly 70 academic staff in Leiden and nearby The Hague.

This publication by Cornelis van Tilburg, will be published at Sidestone Press on September 28, 2022. It discusses various aspects of city gates in the Western Roman Empire: Italy, Spain, Gaul, Germany and Britain.

In August 2006 a young American called Raed Jarrar discovered Arabic’s potency. Detained by four guards at New York’s Kennedy Airport for wearing a T-shirt with “We will not be silent” on it in Arabic, he was told that he may as well be entering a bank with a T-shirt announcing “I am a robber.”

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Prof.dr. A.H. Meijer

In some cases, PhD candidates are permitted to follow a PhD track that involves conducting research and receiving supervision at two institutions: Leiden University and another university. There are two arrangements of joint supervision.

How can party bans be justified? Which parties were banned in post-war Europe – and why? Do militant democracy instruments work? Is an international militant democracy concept in the making?

You should think about job perspectives well before the defence of your thesis.

PhD Candidates are encouraged to start thinking about job prospects well before the defence of their thesis. This page contains information about how to prepare yourself.

The historical archaeology of the Port of Sandy Point and its anchorage, St. Kitts, West Indies

Summary

On 25 November 2020, Sara Arendse defended her thesis 'De uiterlijke verschijningsvorm in het strafrecht'. The doctoral research was supervised by prof. C.P.M. Cleiren and prof. J.M. ten Voorde.

Mapping the neural mechanisms underlying social motivations of adolescents and adults

On Wednesday 24 January 2018 Margaret Kuiper defended her doctoral thesis ‘Het woord en de daad’ (The word and the deed). Her supervisors are Professor E.R. Muller and Professor T.A.H. Doreleijers. Co-supervisor is Dr J.A. van Wilsem.

The research of the Applied Mathematics cluster is concerned with such diverse topics as dynamical systems, representation theory, differential equations and pattern recognition.

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

Host-Microbe Interactions is one of the four research themes of the Institute of Biology Leiden.

Where does the urge to collect come from? What are the explicit or underlying reasons for gathering large amount of objects?

In this paper for Defence Strategic Communications, Alastair Reed and Jennifer Dowling seek to show the importance of historical narratives to propaganda by identifying and exploring five ways in which such narratives are exploited to reinforce the extremists' 'competitive system of meaning'.

In this policy paper, Joachim Koops and Christian Patz are discussing Germany’s comprehensive assessment of Protection of Civilians readiness at the national level.

On February 20th, Gulnaz Sibgatullina succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Gulnaz on this great result.

Both Europe and Latin America face challenges globally and at home. Conflicts over land and resources have been resurgent in recent years.

The Summer School on International Humanitarian Law is designed by the Grotius Centre Kalshoven-Gieskes Forum on International Humanitarian Law. Registration is now open!

On Thursday 16 November 2017 Thomas Leclerc defended his PhD Dissertation ‘A Corrective Approach to Reduce Aircraft Greenhouse Gas Emissions. Contribution to the Study of Interactions between Legal Orders of International Law’. The Supervisors are Professor P. Mendes de Leon and Professor L. Grard.

‘Visibility and secrecy are both valuable tactics and should not be antagonized in LGBT movements, ’ says Jingshu Zhu. Zhu defended her dissertation on Wednesday 21 February.