Many primary school children suffer from anxiety and their numbers are increasing. Psychologists from the Knowledge Center Anxiety & Stress (KAS) are developing and researching preventive training.

Seksueel grensoverschrijdend gedrag en structurele sociale onveiligheid horen niet thuis in vrouwengevangenissen, blijkt uit onderzoek van Leidse onderzoekers Esther van Ginneken en Yara Abbing. Zij vinden dat er een ingrijpende cultuurverandering nodig is en doen aanbevelingen.

How do parents communicate anxiety to their child via body language and words? Psychologist Cosima Nimphy studied this question for her PhD research. Experiments show that children of anxious parents are not more sensitive to their parents’ signs of anxiety.

It is often thought that immigration threatens the solidarity on which redistribution relies. But looking at the post-war period, PhD candidate Emily Anne Wolff finds that this is not the case.

In prehistoric times there was a huge wave of migration, from the steppes in Russia and Ukraine to West Europe. The newcomers’ genes began to dominate. Archaeology research in Leiden into burial mounds in the Veluwe and Utrechtse Heuvelrug areas of the Netherlands yielded this spectacular conclusion.…

As sea levels rise and climate change speeds up, knowledge about the ocean becomes increasingly important. But how is this knowledge being created and how can we use it best to prepare for the future? To answers these questions, Jackie Ashkin studies the day-to-day work of ocean scientists from up c…

Middle East Studies Lecture

The impact of war extends beyond destroyed buildings and torn families. In bilingual Ukraine, the ongoing war with Russia is a major driver for increasingly discarding the Russian language. What does this mean for the position of Russian in Ukraine?

In early modern England, courts of law were working overtime. University lecturer Lotte Fikkers delved into the records of centuries-old court cases involving women. In Early Modern Women's Life-Writing and English Law, she reconstructs how the story they told in court differs from the one they wrote…

All students receiving their bachelor diploma in Political Science last week had a reason or two to celebrate. Two of them especially so: they won the annual award for the best thesis in the International Relations and Organisations and the Politicologie/Internationale Politiek programmes. Congratulations,…

Nikki Ikani (ISGA) and Bernardo Ribeiro de Almeida (LUC) have received Veni-funding. A total of 188 scientists received grants in this round. Veni grants are awarded annually by NWO.

I was disgusted by the recent Ongehoord Nederland broadcast on 15 September. The racist and hateful comments made by alumna Raisa Blommesteijn were, as far as I am concerned, way over the line and in my opinion also violate Article 1 of the Constitution of the Netherlands.

Dr Mamadou Hébié, Associate Professor of International Law at the Grotius Centre for International Legal Studies, served last week as legal counsel in the world’s first advisory proceedings concerning climate change before the International Tribunal for the Law of the Sea (ITLOS), on the one hand, and…

Using mathematics to help children with bone cancer. It sounds a little strange, but for statistician Marta Fiocco, it's just her job. She gets a substantial grant from KiKa for it. With that money, she is going to study the effect of chemotherapy adjustments.

Brothers and sisters within a family, with the same parents, experience their upbringing differently. As well as the impact of their own negative experiences, the way siblings experience their upbringing also plays an important role in anxiety and depression. This is the conclusion reached by Marie-Louise…

The European Commission adopted a proposal regarding common rules promoting the right to repair for consumers.

Academics increasingly face threats, intimidation and abuse. The WetenschapVeilig platform has been launched to address this. Academics who are being threatened or intimidated can seek help from the platform 24 hours a day. It’s good that we now have this platform. But at the same time, it’s awful that…

The Russian threat to Europe, pro-Palestine protests, the passing of psychologist Andrea Evers and speculations on extraterrestrial life. These were among our most popular articles of the year.

One in two people will be diagnosed with cancer. World Cancer Day on 4 February raises awareness of the impact of this devastating disease. Leiden University is conducting various studies aimed at preventing and controlling cancer. Below are just a few examples.

Conference

Kees Waaldijk has worked for many years to map the rights, or lack thereof, of the gay and lesbian community across the world. As he bids farewell to the faculty, those rights are under renewed pressure. How does he reflect on his career?

Many European citizens feel connected to the European Union and place trust in it, Eva Grosfeld found in her PhD research. Yet around a quarter do not identify with the EU at all. How can the EU regain their trust?

How do digital technologies affect adolescent mental health and resilience? How do we foster a secure online environment? How should we deal with increasing rates of online crimes among adolescents? During the mini-symposium ‘The effect of the online world on adolescents’, presented by the interdisciplinary…

Can we reshape school playgrounds through data and design? By using AI and wearable sensors, data scientist Maedeh Nasri discovered ways to create environments where children, including those with ADHD and autism, can connect, play, and grow.

Synchronised heart rates and skin conductance tell us that people are attracted to each other. This explains why we feel a romantic ‘click’ with some people and not with others. This is the result of research by psychologist Eliska Prochazkova from the Leiden Institute for Brain and Recognition, which…

When do we say violence was used in an incident? The answer may seem obvious at first. But interim results from a study by Jolien van Breen show that Dutch people are labelling events in increasingly broad contexts as violent.

In the ESOF2022 mini-symposium organized by the Social Resilience & Security programme, international experts with a background in psychology, philosophy, and law discussed how the online world is related to adolescent mental health issues, moral and emotional awareness and children’s rights. In three…

In a one-hour interview on Dutch radio programme Sleutelstad, Anne-Laura van Harmelen talks about her research into the role friendships in adolescents' well-being, the resilience paradox and the role of social, hormonal and genetic factors in stress-levels and resilience.

What does it mean to be in a Dutch prison? What is true about the prejudices about being in jail? Criminologist Marieke Liem has released a podcast on Dutch national broadcaster NPO Radio 1: Hotel met tralies.

Instant messaging app Telegram is not faring well in the news – the reason being the illicit activities occurring on the platform. Professor Bart Custers helped Dutch current affairs programme ‘EenVandaag’ respond to questions about the platform.

Misleading social media posts are falsely claiming that the Dutch supermarket chain Jumbo uses facial recognition at self-service checkouts. Jumbo denies this, although it has launched trials with AI cameras to combat shoplifting without using facial recognition.

Distracted eating is common and has adverse health consequences. Read more about the research of Leiden social psychologist Lotte van Dillen and some strategies to combat that behavior.

Since the demonstration over a year ago on the Wijnhaven campus, Leiden University has developed plans and initiatives to create the safest possible work and study environment for our university community. The Executive Board would like to explain what has happened since and what else we can expect…

Showing your face at dinners and parties at court: it was the way to get noticed by the king in William I's time. Joost Welten's latest book reveals how, during the reign of William I, the elite danced around his throne both literally and figuratively.

People in the Early Bonze Age used bronze artefacts as a means of payment. This is the conclusion reached by archaeologists Maikel Kuijpers and Catalin Popa in a PLOS ONE article published on 20 January.

On Tuesday 30 September 2025, PhD candidate Jonathan Collins will defend his dissertation A Wolf in Sheep’s Clothing: A Mixed-Methods Analysis of the Far-Right Alt-Tech Social Media Movement in Leiden’s Academy Building. His work examines the communication dynamics of far-right communities on alternative…

Workshop

Workshop

The Economics Department at Leiden University is pleased to announce a junior workshop focusing on The Economic, Social and Political Effects of Migration, which will be held Friday 19 April 2024, at the Gravensteen in Leiden.

It increasingly seems that Elon Musk has taken it upon himself to decide what can and cannot be said on Twitter. He bought the platform with the message that there would be room to say whatever you desired, but he himself is casting doubts on that principle.

Marieke Liem, professor at ISGA, discusses how the number of drug-related murders has not decreased in the last years

Workshop

Workshop

The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

Many children experience trauma and if they are unable to deal with it properly, it can have a huge personal and societal effect. Building resilience in vulnerable children and young people should therefore have the highest priority. This is the message of Anne-Laura van Harmelen, Professor of Brain,…

Carlotta Rigotti and Eduard Fosch-Villaronga have published a new article that offers an insightful and critical literature review on fairness and AI in the labour market as part of the BIAS project.

Political scientists study topics that affect society, but their work often remains out of the spotlight. Not always: the research of Leiden political scientist Simon Otjes does have a visible impact.

People in the Early Bonze Age used bronze artefacts as a means of payment. This is the conclusion reached by archaeologists Maikel Kuijpers and Catalin Popa in a PLOS ONE article published on 20 January. The discovery led to a surge of media reports.

Mensen werken niet alleen liever samen met leden van hun eigen ingroup, ze concurreren er ook liever mee, lieten Leidse onderzoekers in een sociaalpsychologische studie in 51 landen zien. Dit ‘nasty neighbor’- effect was een grote verrassing voor de onderzoekers, totdat ze in studies over dieren doken.…

South Korean smash hit Squid Game is on track to becoming the most successful Netflix production ever. The series is number one in over 90 countries. Professor and Korea expert Remco Breuker can see why South Korean pop culture is becoming so popular, also outside Asia.