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).

On Wednesday, 14 May 2025, Catherine O'Regan will deliver the annual Van Vollenhoven Lecture

Victorian Fairy Tales

The Learning and Behavior Problems in Education program group is responsible for teaching in the area of learning problems.

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?

Arts and leisure, Arts and leisure

Study support, Arts and leisure, Arts and leisure

Arts and leisure

Arts and leisure, Arts and leisure

My ERC Starting Grant, funded with €1.5 million for 5 years as part of the Horizon 2020 research and innovation program, is focused on building the early warning system WARN-D to reliably forecast depression in young adults before it occurs. Why depression, and why prediction?

Knowledge and culture subproject 2:

Primary Objective: The primary aim of the proposed RCT is to evaluate whether LF-TLP in blended form as an indicated prevention for anxiety complaints is more (cost-) effective than TAU according to the NHG guideline Anxiety. We hypothesize that in comparison to TAU, LF-TLP will result in a significantly…

This project has two main aims: I. Determine when novelty promotes fear extinction. II. Discover the neurobiological mechanisms underlying these effects.

Young children, adolescents and students may experience learning difficulties as a result of lack of sleep. Dr Kristiaan van der Heijden investigates sleep problems and solutions for various age groups.

‘The system is failing’, ‘the goals are only being achieved to a limited extent’, ‘we’re letting children down’. These are some of the newspaper headlines that followed the publication of a report by researchers from Leiden University in September. Commissioned by the Dutch Research and Documentation…

The Faculty of Medicine

Ariadne Schmidt, Isabelle Devos and Julie de Groot provide you with refreshing insights concerning the study on urban singles in the period between 1200 and 1900.

The main goal of the research that is conducted in the Brain and Education Lab is to create a better understanding of the cognitive and neural systems that support learning and academic performance across development. To pursue this goal, lab members draw on theories and methods from developmental and…

Five talks will be given during the Leiden Science Family Day: two children's lectures and three lectures for adults. Will you be there ?

Leiden University researchers and their collaborators report the development of new research frameworks that use day-to-day smartphone behavior gathered from a large sample of healthy people to help understand aging, and how aging alters with epilepsy and stroke. These reports occupy two back-to-back…

In this research project child language phonology is studied from the perspective of a psycholinguistic speech-production model and this model is in turn studied from the perspective of developmental phonology.

Can a virtual character’s friendly non-verbal responses stimulate eye-contact in individuals with varying levels of social anxiety?

Does the public speaking anxiety that many youngsters experience originates from specific characteristics in their earlier development?

This project looks at the current practices of marriage law in Indonesia. It examines the often ambiguous views different groups hold of marriage, from local villagers in Bengkulu to women’s activists in Jakarta, and how these relate to the development of national law on the one hand and local practices…

A recent study on reintroduced tigers in Panna Tiger Reserve in India reveals that risks from tigers increased more because of human behaviour and people's livestock husbandry practices.

The overarching aim of this theme is to increase our understanding of the mechanisms underlying altered cognitive, affective, and social behavior in relation to mental health problems.

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

Can we predict fluctuations in suicidal ideation in a person’s daily life, from hour to hour?

The master's specialisation Occupational Health Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

The master's specialisation Applied Cognitive Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

PhD defence

Study information

We are pleased to announce that the ENPAIR Conference 2026 will be hosted and organized by colleagues from the University of Prešov, Slovakia. The conference will take place on 17–18 September 2026 at Galéria Umelka in Bratislava, capital city of Slovakia. The conference the will be:

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

Plant Sciences' contribution to the Biodiversity & Evolution research theme is to understand what are the key drivers of plant biodiversity during evolution with a focus on plant life history and resilience traits and develop tools to restore and maintain plant biodiversity.

PhD defence

Arts and leisure, Personal development, Language, Arts and leisure

Extensive research is being conducted at the Institute of Criminal Law and Criminology on developments in sentencing and punitive measures and how judges and other actors in the criminal justice system reach decisions. Another focus area is how punishments and measures are implemented and the effect…

On Tuesday 26th September Jessica Hill will defend her thesis ‘On the road to adulthood. Delinquency and desistance in Dutch emerging adults’. The defence will begin at 13.45 hrs, in the Academy Building of Leiden University, Rapenburg 73. The supervisor is Professor Arjan Blokland.

Studying the impact of urbanisation on the respiratory health of past Dutch populations (1200-1850 CE).