This paper written by Vydra and Kantorowicz answers the research question ‘What policy-relevant information does Twitter contain?’ as well as the research question ‘How does this information change between a period of normalcy and a period of crisis?’

How did the slave peculium function in the socio-legal context of the Roman Empire?

Written by a select international group of leading privacy scholars, Social Dimensions of Privacy endorses and develops an innovative approach to privacy.

Sanne Kellij and colleagues systematically reviewed 142 articles, examining evidence for three hypotheses on the relation between victimization and social information processing.

An acute shortage of social care staff means that family members often quit their jobs to care for relatives with severe disabilities. This seems too good to be true – and there is a catch. Barend Barentsen, Professor of Labour law, discusses this on Dutch consumer programme ‘Radar’.

Robotics, using social mechanisms like hormonal modulation, may accelerate our understanding of core sociality principles. By looking at social robotics through an evolutionary lens, we propose this field as a promising framework to investigate the fundamental bricks of sociality from an evolutionary…

Jelena Vićić and Richard Harknett offer an analytical construct to better understand the mechanism by which cyber-enabled influence operations work

The availability of indicators based on social media has opened the possibility to track the online interactions between social media users and scholarly entities.

The author researched the motivations of bureaucrats to integrate refugees into welfare services even when they do not have any legal obligation to do so.

Grassroots heritage initiatives and community engagement

How is the development of physiological responses to social evaluation in adolescence affected by other normative developments, such as pubertal, socio-cognitive and psychosocial development? Are social anxiety and public speaking anxiety associated with characteristic patterns of stress responses…

A Diachronic Perspective on the Aegean

Leiden University is an international, broad-based university. We distinguish five core domains for our research and teaching activities.

Mariska Jung (FGGA), Looi van Kessel (FGW), and Jasmijn Rana (FSW) have received a KIEM grant together with the Institute for Social Justice (in development) for their project 'Hope springs eternal': Protest and social movements in the Netherlands.

In this article Vanessa Newby discusses how the ANZUS states of United States, Australia, and New Zealand that sit on the fringes of the Asia-Pacific, are increasingly using their armed forces to deliver Humanitarian Aid and Disaster Response (HADR) as a way of engaging with the region.

A study of the International Union for Conservation of Nature has identified tree species native to Indonesia’s Kutai National Park that are resilient to climate change. The species support threatened East Bornean orang-utan populations; therefore, the study recommends their use in reforestation efforts.…

The aim of our research program is to better understand the etiology and course of mood, anxiety and stress-related disorders, such as depression and posttraumatic stress disorder (PTSD). We investigate both the transdiagnostic mechanisms underlying these disorders and work on improving the treatments…

On the 27th of June, Timothy Mac Hadjah successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Timothy on this achievement!

The labour market has seen significant changes in recent decades, not least in terms of greater flexibility and digitisation. Leiden University is keen to prepare students for a working life in which flexibility, resilience and adaptability will be essential qualities. The university’s vision on teaching…

The endophytic microbiota is a community of various microorganisms that reside in plant tissue. These microbes are known to promote plant health and resilience, and their members do not simply exist side by side.

Leiden University opened its doors in 1575 – the very first university in the Netherlands. The law faculty was involved from the start and so in 2025 we, too, celebrated our 450th anniversary.

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.

Leiden University, Department of Economics

The Social Assistance and Minimum Income Levels and Replacement Rates Dataset, assembled by Jinxian Wang and Olaf van Vliet (version December 2016), provides data on minimum income benefit schemes in 33 countries from 1990 until 2009.

On 24 January 2024, Vethaak defended the thesis 'Empirical Analysis of Social Insurance, Work Incentives and Employment Outcomes'. The doctoral research was supervised by Koen Caminada and Pierre Koning.

A mosaic is the only image which can do justice to museums in the Caribbean. They are as diverse and plentiful as the many communities which form the cores of their organizations and the hearts of their missions. These profoundly social museums adopt participatory practices and embark on community engagement…

The key question addressed in this family study is whether the psychophysiological and neurocognitive abnormalities often reported in SAD patients are heritable and can thus be found in family members of SAD patients as well. Determination of heritability of these deficiencies is essential for endophenotyping.…

This study examines recovery planning committees across Japan's Tohoku region.

Bordering Up: Regulating Mobility Through Passes, Walls and Guards

In this consortium CWTS (Leiden University) collaborates with two Swedish SMEs: Monocl AB and Recorded Future AB. Monocl AB delivers intuitive analysis software to Life Sciences professionals in support of strategic decisions and improvement of business performance. Recorded Future AB is an organization…

-

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?

Over the last decades, income inequality has increased globally. How do social policies affect this increasing trend? How do international trade and technological progress affect inequality? What is the profile of income inequality in China?

La radicalisation est devenue un mot désignant notre monde en couleurs négatives. Ce livre cherche à comprendre ce que c'est que la radicalisation au Sahel et aux Pays-Bas?

An analysis of pot decoration and hut distributions from the Central European Neolithic communities of Elsloo and Hienheim.

This project investigates which aspects of social media content adolescents attend to and how these relate to their credibility judgments, aiming to systematically understand their susceptibility to misinformation and inform effective educational programs that foster youth’s resilience to misinforma…

Conference, Workshop

On Monday, 4 September the new bachelor programme Security Studies had its official start.

In its magazine National Security and Crisis Management, the Ministry of Security and Justice paid extensive attention to the ISGA Conference ‘Who determines the security (research) agenda?’. Leiden researchers presented their research on important themes like the national security agenda, crisis management,…

This special issue of the International Forestry Review talks about how logging really affects society.