We talk with Michiel van Elk, about his research into mapping what effects psychedelics have on the human brain and what this means for the possible clinical application of these drugs. The cognitive psychologist shares his findings with a sober view, bringing critics and fanatics closer together for…

Are you trying to write a perfect paper on your first attempt? That appears to be efficient, but in the end it usually is a waste of time. Writing and revision are separate processes; the first makes more use of the creative right brain hemisphere, while the latter appeals primarily to the critical…

Nausea, neurologic pain and hair loss: some of the severe side effects of chemotherapy. Not necessary, biochemist Liyan Zhang showed. Together with Leiden biologists and others, she achieved great results with a drug that is only active in combination with light. Zhang will defend her PhD on 4 July.

Also in 2024, our colleagues from the Institute of Psychology were visible in the media in various ways. Check out their appearances in Dutch media, from NRC to the Podcast psychologist.

Laughing, crying or even having a moan together: close friends are worth their weight in gold in good and bad times. Researcher Lisa Schreuders explains the effects on body and mind. Can we give that magical click a helping hand? And what advice does she have for first-years in their new city?

Supercomputer ALICE has been expanded, making it even more powerful and faster. This means researchers and students can work with heavier models. From language research to brain activity scans, this expansion is good news for a variety of disciplines. So who gets to work with this prima donna?

A team of researchers from Young Academy and the Huygens ING/NL Lab has brought a three-century-old fragrance to life based on a recipe by Constantijn Huygens. The fragrance makes the past more tangible and can help people experience history differently.

Can humans sense where north is, using what is known as magnetoreception? This question had master’s student Björn Keyser (Media Technology) so intrigued that he started crowdfunding to be able to study this together with the California Institute of Technology.

In the academic year 2022-2023 the Social Resilience and Security interdisciplinary programme will offer a new minor for students who are interested in studying interpersonal violence and who are entering the third year of their Bachelor's degree. The announcement went down well with students: the available…

Taking probiotics can help reduce negative feelings. This is shown by research by Katerina Johnson and Laura Steenbergen published in the journal npj Mental Health Research. They also investigated which people benefit most from these ‘good’ bacteria.

The fact that scientists are increasingly better able to access molecular cell and tissue data also brings with it a new challenge: how can scientists find the information they need for research among the vast amount of data available?

The study, made possible through funding from the Hersenstichting, is led by neurologist Brigit de Jong, in collaboration with psychiatrist Sonja Rutten, Karin van der Hiele and Aglaia Zedlitz. Other partners include University Medical Center Groningen, Klimmendaal Rehabilitation Centre and Amsterdam…

Piercing through the skull with an ice pick, administering electric shocks without an anaesthetic, or applying leeches to the uterus: these may seem like medieval methods of torture, but they are in fact therapies used in medicine. Willem van der Does writes about all of them in his new book. ‘Physicians…

Could ketogenic therapy change the future of autism spectrum disorder (ASD) treatment? Bret Scher sits down with Eline Dekeyster to explore how nutritional ketosis may support individuals with autism and other brain-based conditions.

In the first instalment of the three-part podcast series Óf Bones, Brains, and Pink Elephants, three students of Utrecht University interview Dr Amanda Henry on dental care in the past. Why do we need to brush our teeth, and why didn't our ancestors?

In het LUMC in Leiden onderzoeken ontwikkelingspsychologen hoe kinderen en jongeren omgaan met emoties. Daarvoor maken ze een mri-scan van de hersenen van de deelnemers (9 - 16 jaar). De 11-jarige Olivier in het Jeugdjournaal: ‘Ik vind het leuk om het onderzoek te helpen.’ Wil je ook de wetenschappers…

Friendships play a crucial role in our lives. For children, these relationships really start to blossom during middle school, when they begin to understand the give and take of friendships," explains Simone Dobbelaar in an interview with the BBC.

However tempting it may be to lock yourself in your room or in favourite library nook in the days running up to an important exam, it's not a very wise choice, stresses neuroscientist Judith Schomaker.

Adolescents with good friendships experience fewer anxiety and depression symptoms, PhD student Iris Koele discovered in her research on high school students' social relationships. 'As a psychologist, I include friends in the treatment plan: who do you call when things are not going well?'

In 2025, our colleagues from the Institute of Psychology once again made a strong presence in the media. From (inter)national newspapers to podcasts, discover where they shared their expertise in the media this year.

In Dutch magazine De Psycholoog, Anne-Laura van Harmelen talks about the impact traumatic experiences, especially for those who are growing up.

In Dutch magazine De Psycholoog, Anne-Laura van Harmelen talks about the use of the term resilience and argues that resilience is concept that needs further explanation.

Why do some smokers quit much more easily than others? Can we think ourself to insomnia? And does playing music together help to calm conflicts? Psychology students investigated these questions and presented their findings during the Psychology Science Day 2023.

Is aggression always bad? PhD research by psychologist Simone Dobbelaar shows that it is not. In fact, children who occasionally fiercely defend themselves and stand up for their peers often feel better mentally.

An impressive speech by Dean Jasper Knoester, a lecture by top researcher Mario van der Stelt about brain messengers, and the presentation of the faculty awards. 2025 begins on a hopeful and festive note, with a toast to a year of fruitful collaboration within and beyond the faculty.

An impressive 22 research projects by Leiden researchers have been awarded Veni funding from the Dutch Research Council (NWO).

Glorious sunshine, dozens of enthusiastic academics and huge numbers of Leiden residents ensured that this year’s special jubilee version of 3 October University was a great success.

In brain diseases such as Parkinson's and Alzheimer's, proteins clump together to form fibres. ‘Chaperone proteins’ unravel those fibres, but in the test tube biochemist Anne Wentink saw that this can also cause new problems. She is going to find out what happens inside cells to determine what a drug…

Leiden researchers have found clues to why a rare pregnancy disorder is mild in some babies but life-threatening in others. Their discovery opens the door to a test that could identify severe cases during pregnancy. Fortunately, a treatment already exists.

For decades, linguists have racked their brains over the question of precisely how the syntax of various languages is different. PhD candidate Martin Kroon has developed a computer system that brings us closer to finding an answer. His PhD defence is on 10 November.

In the academic year 2022-2023 the Social Resilience and Security interdisciplinary programme will offer a new minor for students who are interested in studying interpersonal violence and who are entering the third year of their Bachelor's degree. You can register for this minor (from 2 May) in your…

‘If you want to implement open science, you at least need someone at each faculty who can help researchers to solve practical problems.’ Dorien Huijser spent two years managing the transition to a new working method at the Institute of Psychology’s Brain and Development Research Center.

Although it can be a challenge at times, parents should keep communicating with their teens. Also about how they parent. Research by developmental psychologist Loes Janssen shows that parenting can be perceived quite differently by family members and mood plays an important role. Parents often parent…

It may be the best tradition of them all: on the university’s birthday, its professors go to primary schools to teach a special lesson. This year, 75 professors visited 44 local schools. ‘How does stress get into your body?’

Are maps objective or do they convey hidden messages that you would miss at first glance? A map is always a simplification of reality. Mapmakers reduce, distort and select. This allows the reader to be guided literally and figuratively. Leiden University Libraries (UBL) and the Museum Volkenkunde jointly…

Innovation through repetition. That is how university lecturer Jurriaan Witteman describes his research on the automatic processing of angry voices in the brain. The original research was conducted 20 years ago, but, with an NWO grant, Witteman is now going to see if those results are accurate.

‘AI can’t do half as much as people think,’ says computer scientist and psychologist Roy de Kleijn. He tries to teach robots seemingly easy things, and keeps on discovering how smart human intelligence really is. Three things that computers are no way near doing.

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,…

Psychology teacher of the year is Evelien Broekhof. The Master Thesis Awards are for Yanna Naeije and Arian Memarpouri. Mirjam Wever wins the PhD Paper Prize; Jip Aarts wins the PhD Wild Card: Academic Citizenship. Congratulations!

Brechtje de Jong, a Bio-Pharmaceutical Sciences master’s student, and Ilse de Weert, a Pharmacy student, have won the KNMP Studentenprijs 2024. They received the award for their outstanding academic performance and research internships.

Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

Brain scans, heart attacks and credit scores: many science applications revolve around data. But how do you mine applicable insights from a mountain of data? In a Bachelor Honours Class, students discover how data science can contribute to their discipline.

A presentation on the latest developments in artificial intelligence and law, several public lectures on Criminal Justice, and a brand new trial in which Leiden female serial killer ‘Goeie Mie’ was acquitted after all. It was all possible during Leiden European City of Science 2022. Below is an overview…

Anne-Laura van Harmelen, professor Brain, Safety and Resilience will give her inaugural lecture ‘Resilience does not exist’ (in Dutch) on Monday 27 June. In her inaugural lecture she will discuss resilience after childhood adversity.

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.

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