This page provides information on what to do if you have been subjected to unacceptable behaviour.

This page provides information on what to do if you have been subjected to unacceptable behaviour.

This page provides information on what to do if you have been subjected to unacceptable behaviour.

Have you been subjected to concerning or threatening behaviour? Are you worried that a fellow student might pose a danger to others? Or do you have concerns about abusive behaviour in the home? If so, you can turn to the Advisory Team for Concerning or Threatening Behaviour.

Aesthetic attraction plays a big role in orangutans’ mate choice, behavioural biologist and PhD candidate Tom Roth has observed. But to discover just how big that role is, more research is needed into the emotions of the great apes.

As of 1 September, Jeroen van Zon started as professor by special appointment in Quantitative Developmental Biology at the Institute of Biology Leiden (IBL). Van Zon is also group leader of Quantitative Developmental Biology at the physics research institute AMOLF. Three questions about his new role…

Lecture, CHiLL series

Scientists have discovered that starlings and parrots can imitate the complex sounds of Star Wars droid R2-D2 remarkably well. Their study reveals how the structure of a bird’s vocal organ determines its vocal abilities – and how citizen science helps uncover it.

Roel Wouters (24), a biology student at Leiden University, is a finalist in the election for UN youth delegate for Biodiversity and Food. The digital polls open for a week on Friday 22 October. Under-30s can vote for Roel at www.stemroel.nl.

‘It was not always accepted, but I just wanted to be a researcher. Now, I am as happy as can be.’ It is one of the quotes from the International Women’s Day presentation for Biology students. Seven women, working as researchers and teachers at the CML, IBL, and Naturalis, shared their experiences with…

Gijs van der Velden has one of the best study results in his first college year of all science studies. With that, he won the Young Talent Incentive award and received 500 euros of the Koninklijke Hollandse Maatschappij der Wetenschappen (KHMW). The biology student remains quite nonchalantly. ‘Of course,…

In this episode we talk with Mara van der Meulen about prosocial behaviour and social exclusion in children. Van der Meulen also explores the role of genetics and environment in the development of social behaviour. To find out more about her research on why some children are beter able to develop their…

The brain structure of young people with conduct disorder differs significantly from that of their typically developing peers. This is the conclusion of an international study that analysed more than two thousand MRI scans, recently published in The Lancet Psychiatry. Dr Moji Aghajani, one of the principal…

What happens in our bodies when we care for children? And why are some people more caring than others?

During the spring of 2021, a group of eight biology students from Leiden set out into the dunes in search of amphibians. Using DNA, they determined the geographic origin of the animals. And guess what? In many cases they discovered exotic populations of animals that do not naturally belong in The Netherlands.…

Earning some quick money by drug trafficking, committing an act of violence or almost collapsing under performance pressure. In the four-part NeurolabNL Young vodcast young people talk openly with neuroscientists about high-risk behaviour and performance pressure. How did they find their way back?

How do people vote? How rational are voting choices? How much do external factor weigh in? In this article social scientis provide some background.

Today, 13 May 2024, Leiden University’s Executive Board is publishing the advice of the committee that investigated reports of unacceptable behaviour and breaches of academic integrity. These reports were about a professor from the university and their partner (a former member of the university staf…

From 1 October, two new Directors of Education will start at the Institute of Biology Leiden (IBL). Dennis Claessen as the new director for the master's programme of Biology and Marcel Schaaf as director for the Biology bachelor's programme. Claessen and Schaaf have been appointed for a period of four…

Martijn Verkuilen is the winner of the Unilever Research Prize 2022. By transferring DNA from a plant into yeast, he made the first move to produce a new drug for type 2 diabetes. He collected his prize in Wageningen on 24 November.

University is often a period of sexual exploration and experimentation, generally to the satisfaction of all involved. But sometimes you want it and the other doesn’t. Or vice versa. Or you can’t really tell. This is what the Safe Space play at Theater Ins Blau was about on 11 October. And: can your…

In Leiden University's video series on Leiden and The Hague as student cities, students interview each other at their favorite spots. In the fifth video of this series, archaeology student Azra spoke with Biology student Floris in Naturalis Biodiversity Center.

It is sufficiently plausible that, during her employment, a professor of archaeology at Leiden University was guilty of prolonged transgressive and unacceptable behaviour, ‘which also at that time could be classed as unacceptable’.

This is a difficult time. Above all, for all those directly involved in this horrible case – unacceptable behaviour by a professor and his removal from the University – the case we went public about on 18 October and that has been reported in the media. This is painful and tough for the complainants…