Delineating psychophysiological endophenotypes of social anxiety disorder

Under what circumstances do paramilitary groups limit their use of political violence? This article examines the use of political violence by the PIRA.

Where are the Women in Global Governance and in peace processes?

Do you have a question about studying at leiden University or student life in Leiden or in The Hague? Do you want more information about the Crisis and Security Management programme? Chat with a current student for answers to your questions!

On 30 January, GTGC hosted a special event together with the Embassy of Ireland. As part of his visit to the Netherlands, John Concannon, Director General of the Global Ireland Unit of the Irish Department of Foreign Affairs, came to the university to engage in a discussion about Ireland's role in international…

How did local lifeways and crafting practices persist and develop in the diverse environments of the increasingly interconnected Gulf of Fonseca (AD 400-1521)?

Evidence and Care-work in a home visiting program to promote maternal sensitivity and parental reflective functioning in Alexandra township, Johannesburg, South Africa.

Study information, Experience Day

Carsten de Dreu has received the Carol and Ed Diener Award in Social Psychology which is designed to recognise a mid-career scholar whose work has added substantially to the body of knowledge to the social psychology field and brings together personality psychology and social psychology.

On 4 July, Jorrit Rijpma participated in a roundtable event hosted by the European Policy Centre (EPC) in Brussels.

How can we promote more durable solutions to protracted refugee situations and which roles can connectivity and mobility of displaced people play to improve protection and resilience?

How can we promote social cohesion in a society that is culturally and religiously diverse?

Urban green infrastructure has the ability to make make cities more sustainable. However, the exact implementation of green infrastructure and the choices that must be made during implementation, are still topic for discussion. In the Future Cities podcast, environmental scientist Joeri Morpurgo chats…

Exclusion elicits the same response in children as in adolescents and adults. That is what psychologist Mara van der Meulen found when she studied brain activity in primary schoolchildren. ‘What is new for us is that it is the same in childhood as later in life.’ Doctoral defence on 10 December.

The complexity of an intelligence problem determines to a great extent the certainty that can be provided by intelligence and security services.

Cultural Anthropology and Development Sociology

And its application in deciphering hominin diets in palaeolithic eurasia

The Rise and Decline of an Iberian Bourgeoisie is one of the first long-term studies in English of an Iberian town during the late medieval crisis. Focusing on the Catalonian city of Manresa, Jeff Fynn-Paul expertly integrates Iberian historiography with European narratives to place the city's social,…

On Tuesday 24 September the Marengo trial, also known as the trail against the so-called Mocro Maffia, continued behind closed doors after the fatal shooting of barrister Derk Wiersum. The main suspect is Ridouan Taghi. He is believed to be residing abroad along with several accomplices.

This article provides an in‐depth assessment of lone actor terrorists’ attack planning and preparation.

In theory, states can gain security by acquiring internal arms or external allies. Yet the empirical literature offers mixed findings: some studies find arms and allies to be substitutes, while others find them to be complements. Political scientists Matthew Digiuseppe (Leiden University) and Paul Poast…

Violent conflicts and civil wars in Chad impede most rural households' access to food security, agricultural activities and access to essential services such as health care. In her dissertation, Nakar Djindil Syntyche denounces this issue. She obtained her PhD on 24 November.

On 1 March 2023, the Dutch Safety Board (Onderzoeksraad Voor De Veiligheid, OVV) published its report on the protection provided by the Dutch security services and lessons learned from three cases. The OVV was highly critical of the use of key witnesses and the protection offered to them. Jan Crijns,…

The Executive Board has appointed Olaf van Vliet as Professor of Economics at Leiden University, specialising in social security and labour market policy from an international perspective. The chair is affiliated to both the Department of Economics (Leiden Law School) and the Institute of Public Administration…

The extensive use of electronic communication channels and other devices has opened new possibilities for collecting data on human behavior. This information is sometimes openly accessible, but largely part of administrative registration systems that are not open to the broader public. The data provides…

In an appeal case, an employee of a care organisation in Nijmegen who was shown the door because of her criticism about the coronavirus voiced on LinkedIn, has had her dismissal reviewed. The court in Arnhem ruled that the employee had crossed a line and that her employer was entitled to dismiss her…

Online data breaches are recurrent and damaging cyber incidents fors organizations worldwide. This study examines how organizations can effectively mitigate reputational damages in the aftermath of data breaches by hacking, through situational crisis communication strategies.

By chance, computer scientist Hans-Dieter Hiep (Leiden Institute of Advanced Computer Science and Centrum Wiskunde & Informatica) discovered a ‘gaping hole’ in a widely used method for evaluating software security. Hiep patched the hole, causing quite a stir in his field. 'It’s not pleasant when a PhD…

How can mentors and social workers foster the vocational identity of at-risk youth and improve their prospects? This is the subject of Rineke Keijzer-Groot's thesis. She is a dual PhD candidate at ICLON and Dual PhD Centre. Defence on 18 November.

It was already known that social anxiety disorder often affects more than one person in the same family. But research by PhD student Janna Marie Bas-Hoogendam has now shown that there are genetic brain characteristics that are associated with social anxiety. The PhD ceremony will take place on 14 Ja…