Promotor: M.A.G.J. Orrit

Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).

A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.

On Wednesday 31 August 2022, the graduation ceremony of the BSc Security Studies took place. The ceremony was opened by programme director Daan Weggemans.

The Master's Day on 4 November was very busy. Prospective students visited the many presentations and bombarded the guides with their questions.

More and more Leiden students are studying in China. Two of them talk about their summer course there. 'Now I understand better the kind of country Chinese students come from who are studying in Leiden.'

Impressions by Martin Küster, Master of Arts.

On Tuesday 16 April 2019 study association JSV Liberi and the Department of Child Law welcomed alumni of the master’s programme Jeugdrecht to a careers afternoon and alumni evening.

In the ‘Educatips’ column, lecturers in Child and Education studies share their most important insights on teaching. This month: Tirza Smits, Kim Stroet and Marit Guda observed frustration among students working in groups, often due to poor communication. So they decided to build a tool to help.

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

Leiden University is home to over a hundred specialists studying the Middle Ages and the Early Modern period. From 2017-2018 onwards, they will join forces to offer two new options for specialisation within existing MA programmes: Medieval Studies and Early Modern Studies.

Who determines what is wrong with children and how they develop? Educator and sociologist Annemieke van Drenth wrote a book about this that will be released on 10 June. In it, she uses the history of the school for ‘idiotic children’ in The Hague to investigate how special children were identified in…

How can teachers engage students, make them curious and inspire them for Science, Technology, Engineering and Mathematics? These questions were addressed during an international congress that took place from 15-17 April in Leiden, organised by the European science education project Teaching Enquiry…

Neurospyschologist Liza Cornet is the winner of the national final of Famelab. Famelab is an international science communication competition for young researchers. The aim of Famelab is to explain your research as clearly as possible in a maximum of five minutes. No PowerPoint or video and with just…

Half the world's population is introverted and comes home drained after an evening of drinks. Their social battery is empty. 'People with autism have a similar experience, but much more intense,' says Boya Li, who researches emotional regulation in children with autism and hearing impairment. Does this…

What if you get excluded? Are apps against fear and stress effective? How do you keep your brain in shape? The first season of the new podcastseries ‘BreinGeheim’ is about the social contexts of adolescent development and how teens become resilient individuals. Leiden-based behavioural scientist sit…

Vincent Bakker, PhD Candidate at the Department of Economics, was awarded the Research Master’s Thesis Prize 2017 of the Faculty of Social and Behavioral Science.

Can SMILE, our multi-component intervention, which combines cognitive-behavioural therapy for insomnia, mindfulness, stress, and lifestyle components, improve sleep quality? Can it also improve mood and quality of life and prevent depression and anxiety in the long term?

Eine Archäobotanische untersuchung zu Umwelt und Landwirtschaft der Ältesten Bankkeramik.

Do general practitioners recognize children with or at risk of problematic anxiety and is there a pattern that might help differentiate those with and without anxiety disorders in general practice?

What are the social and neural mechanisms that contribute to fluctuations in self-esteem in healthy adolescents and adolescents with depression?

This dissertation aims to provide insight in ethnic prejudice in Chinese-Dutch children and the ethnic socialization context they are exposed to through three social-contextual factors, i.e., parents, children’s books, and the COVID pandemic.

In June-August 2010 large scale excavations were executed on the cemetery belonging to the monastery, an area now termed the Paardenmarkt, by Hollandia Archeologen in cooperation with Leiden University. During the course of nine weeks, the students from the former minor Human Osteoarchaeology excavated…

When you apply for admission, you’ll be asked to submit several documents.

The aim of this study is to identify the side effects during treatment with methylphenidate and to investigate how children experience the use of the medication (such as Ritalin, Concerta and Medikinet).

Now that you are aware of your master’s admission requirements, it's time to check the application deadlines.

Unravelling Mindreading Skills through Storytelling and Narratives

When and how does social anxiety develop? How can it go astray in some adolescents? How can we help troubled young people to attend school regularly and return to a normal developmental pathway?

A better understanding of inequality to help create a fairer, more just society.

This focus area adresses the social context of health and well-being, with a particular emphasis on social inequality.

The Institute of Private Law is located in the Kamerlingh Onnes Building.

Using a corpus of textual, literary, and other evidence to shed new light on the age at which medieval women gave birth.

Clinical psychology is a discipline concerned with the application of psychological science to the assessment and treatment of mental disorders.

A pharmacist in Nieuwegein refuses to provide medication to trans people citing conscientious objections. Mirjam Sombroek van Doorm, Professor of Law and Health, says in ‘NRC’ newspaper that all patients are entitled to equal treatment.

What happens to children of extremist parents? Commissioned by the Scientific Research and Documentation Center (WODC) of the Ministry of Justice and Security, four ISGA researchers, Layla van Wieringen, Daan Weggemans, Katharina Krüsselmann and Marieke Liem, wrote a report on the nature and extent…

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…

Effectiveness of an early intervention program for anxiety-prone toddlers in the Netherlands

Commissioned by ‘Politie en Wetenschap’, Pauline Aarten, Assistant Professor at Leiden University, and Marieke Liem, Associate Professor at Leiden University, published their new research last week. The study

In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

Promotor: M. Ubbink, Co-promotor: G. Siegal

With the recent rise and fall of IS, academics and policy makers around the world are expressing concerns about the fate of children of former foreign fighters. Will they follow in their parents’ footsteps? In this paper, Layla van Wieringen, Daan Weggemans and Marieke Liem argue that in light of this…

How do educational philosophies, discourses and practices spread around the globe, and how are they transformed and adapted locally?

The main aim of my Ph.D. thesis is to further explore the value of using early developing zebrafish larvae (up to 5 dpf) as a model to study anxiety-like behaviour and their pharmacological modulation with drugs.

PhD defence