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People can be easily mislead with graphs. But they don’t necessarily stay misled, the research shows.

For conducting experiments involving animals, you need a project license and a valid research plan. On this page, you will read what this entails and how to submit these documents. You will also find other relevant information regarding conducting research involving animals here.

Quantum technology, statistics and a survey with memes: definitely not your everyday research. Julia Cramer (Leiden Institute of Physics) and Sanne Willems (Institute of Psychology) investigate how people perceive quantum.

The financial sector, supply chains and ecology. Not necessarily topics you might associate with physics, yet it’s exactly what new professor Diego Garlaschelli is dealing with. The common thread? Complex networks.

Leiden University offers practical support and advice for professional communication. Here you will find all the guidelines and tools you need to get started immediately, as well as answers to questions such as: How do you apply the house style? Where can I find suitable imagery? And who can I turn…

In Maileon, you have the role of editor, but there are other types of users with different permissions.

If you need a mobile telephone or a mobile subscription or data-only subscription, can apply for it via the helpdesk portal. You can also contact the helpdesk portal if you need to change or cancel a mobile or data-only subscription.

In the new white paper by Leiden-Delft-Erasmus Universities, diversity researchers and professionals share practical insights into diversity dilemmas. From migration and integration to care for the elderly and sport. On 26 June, the collection of eight pair interviews will be presented at the Knowledge…

After diving into the murder trial of nurse Lucia de Berk, statistician Richard Gill became a leading expert on the statistics of medical murder cases. Together with colleagues, he now wrote a peer reviewed report about the statistical missteps in past medical murder trials. It gives recommendations…

Leiden psychologists receive an Outreach Grant from the Young Academy Leiden (YAL) to talk about facts and fables in their field of research. Marieke Bos, Lara Wierenga, Marit Ruitenberg and Sanne Willems will receive up to €1000 to realise their project.

Five lecturers from Leiden University have received a Comenius teaching award. With the grants they can carry out an innovation project.

A test evaluation helps assess and improve the quality of your test.

For thirty years, the Dutch Newspaper AD conducted an annual search for the best herring. This came to an end when economist Ben Vollaard, based on a statistical analysis, claimed it was rigged. But that claim doesn't smell right, says Leiden statistician Richard Gill. ‘The way you code and process…

What exactly does it mean when your doctor says you have a ‘good chance’ of survival? Leiden researchers discovered that there is a big difference in how people interpret such probability phrases. And that can be a problem, warns lead researcher Sanne Willems in her blog post.

Mathilde Verdam and Julian Karch (Methodology and Statistics) have been awarded a grant as co-applicants by Openscience NL to promote "Open software for statistically responsible research".

On 31 January 2014 Professor Willem Heiser (Psychology, Statistics and Data Theory) was awarded the distinction of Knight in the Order of the Dutch Lion. After his farewell lecture he received the royal honour for his exceptional academic, social and administrative achievements.

Is it acceptable for an algorithm to make mistakes? Quinten Meertens investigated this at Leiden University and the UvA and has been nominated with his research for the prestigious Christiaan Huygens Science Prize. The winner will be announced on 11 October. In April, Meertens received his doctorate…

How can humans and computers learn from data? To research this, scientists often use so-called Bayesian methods. Although these methods are widely used, they also have limitations and are not always easy to interpret. In her dissertation Rianne de Heide describes some of these problems and introduces…

‘Jelena Prokic, university lecturer and researcher at the Leiden University Centre for Digital Humanities, will be preparing students for the challenges and opportunities of the digital world. In September, six modules will start on subjects such as statistics and digitally searching through texts.…

Wouter Weeda has been appointed Scientific Director of the Institute of Psychology by the Board of the Faculty of Social and Behavioural Sciences. He will start on 1 December 2025 for a period of three years, succeeding Hanneke Hulst.

Writing a Master’s thesis is a challenging process for many students. What do you do when your students get stuck, are unsure about their approach, or need help with statistics? As a thesis supervisor, you have only limited time to spend with each student. FSW's Master Thesis Lab offers a solution.

Education

Elise Dusseldorp has been appointed Professor in the Methodology and Statistics of Psychological Research. In the same way that she spends her spare time rambling through the forest, as a professor she sifts through colleagues’ research data. ‘I often come across information that doesn’t appear in the…

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.

Predictable variation in children’s dosage Professor Catherijne Knibbe – Pharmacology There is no adequate foundation for te dosage of medicines prescribed for children in 40-80% of cases.

What do chemical reactions, epidemics and vegetation have in common? More than you might think, says mathematician Mark van den Bosch (Leiden University). In his PhD research, he shows that even in systems that behave in chaotic and erratic ways, a surprising amount of order and structure can be fou…

Digitalisation affects us all, but in different ways. A new project involving four research consortia has been established to gain a clearer understanding of digital vulnerability. We spoke with the projectlead Gianclaudio Malgieri (eLaw) about the project.

On July 1, Maurice Janssen will defend his doctoral thesis on pottery production in South Limburg during the Middle Ages. For his research, he studied old publications of research and excavation reports to see how the pottery and the sites were recorded and interpreted at the time.

Floreat et crescat. Flourish and grow. That was what was wished for the Mathematical Institute at its opening. Now, the institute proudly celebrates its 70th anniversary. Time to reflect on how it all began. And importantly, how is it doing now?

Statistician Anja Rüten-Budde has won the C.J. Kok Jury Award 2020. Her PhD thesis resulted in an app which helps patients with soft tissue sarcoma and their doctors to make well-considered choices about the treatment. ‘Her work is interdisciplinary and directly relevant for society,’ the jury state…

Assistant Professor Christopher Green was interviewed on ABC Australia about the recent COVID-19 outbreak in North Korea. Green says that the statistics the isolated country has given are ‘essentially nonsense’.

Organisation

On 21 January, the Institute of Environmental Sciences (CML) has released two reports on circular economy and urban mining in the Netherlands. In them, together with Statistics Netherlands, they take stock of part of the Dutch ‘urban mine’: how much raw material can we reuse from the electricity grid,…

It’s about much more than learning how to write a readable piece or give a presentation that doesn’t send the audience to sleep. The intensive Science Communication Summer School gives young scientists the chance to really make contact with the public.