The master's programme Comparative Criminal Justice at Leiden University focuses on criminology, criminal law and their mutual relationship. The programme offers an international comparative perspective, analysing criminal justice systems, legislation and policies in common law and civil law countri…

In the Criminal Justice research programme, (criminal) law researchers and social scientists – many of whom are criminologists – collaborate on various projects. The research programme focuses on the content and form of decisions that could be, should be and are taken in by actors in the criminal justice…

How should the international community of states respond to genocide, war crimes and crimes against humanity? How can the perpetrators of international crimes be brought to justice? How can international crimes be prevented? How can the international community of states promote international consensus…

The Institute of Criminal Law and Criminology comprises two departments. One focuses on research and teaching in the field of criminal law and procedure and the other on criminology.

Criminal justice raises intricate moral questions concerning the justification of the penal institution, the mode and extent of criminal sanctions enforcement, the content of criminal sanctions (imprisonment, fines, alternative punishments), the nature of the agent holding penal authority, the normative…

In this article, the authors explore how international criminal law is moving into a ‘post-critical’ phase and examine its potential for emancipatory reform.

Are you thinking about studying Comparative Criminal Justice? Learn more and watch the videos

Detecting and combatting crime is becoming increasingly complex. Security is high on the national and international agenda. The master’s programme Crime and Criminal Justice in Leiden provides the skills to face these challenges.

One of the recurring points of discussion within the Criminal Justice research programme is the question of what behaviour should or should not fall within the scope of criminal law. This research theme is examined from a legal-dogmatic and social-scientific perspective.

Although sexual abstinence before marriage is no longer the central message in The Netherlands the affective relationship as a criterion for professionals within criminal justice can be seen as a more contemporary version of marriage.

The Institute of Psychology is responsible for innovative and interdisciplinary research and education within psychology and related disciplines.

The Institute of Psychology is committed to play a prominent role in teaching and research at the national and international level.

Homicide engenders broad moral concerns in society, and its aftermath can be understood as a barometer for criminal justice policy. Of all homicides committed, however, only some lead to arrest, to prosecution and ultimately to conviction in court.

On 12 mei 2020, Darryl Robinson defended 'Exploring Justice in Extreme Cases: Criminal Law Theory and International Criminal Law'. The doctoral research was supervised by Prof. C. Stahn.

The Advanced Master's specialization International Criminal Law at Leiden University examines international criminal law and international criminal procedure.

Criminal Law and Criminology is is a specialisation of the master’s programme Rechtsgeleerdheid (Law) at the renowned Leiden Law School of Leiden University.

he master’s programme in Psychology focuses both on in-depth study of theory and on the acquisition of professional and research skills. The distinctive feature of the Leiden master’s programme is that the teaching is not restricted to only the functioning of psychological processes; these processes…

Everyone most obey the law. If you don’t, you will face the police and the courts. The application of national, European and international criminal law would seem to be a matter of following the letter of the law. But the reality is more nuanced. Criminal law scholars and criminologists from very different…

The Institute of Criminal Law and Criminology is committed to international cooperation and exchange.

Bringing together the most current research on the relationship between crime and gender in the West between 1600 and 1914, this authoritative volume places female criminality within its everyday context.

Organized by the Grotius Centre for International Legal Studies, this programme enables students and professionals from all over the world to engage in discussions on the prospects and challenges of international criminal justice. Registration is now open!

On 23 February 2022, Cale Davis defended the thesis 'Prosecutorial Discretion in International Criminal Justice'. The doctoral research was supervised by Prof. C. Stahn en Dr. J.C. Powderly.

The fifth edition of the Owada Chair Symposium, that was held in Leiden on 14 and 15 October 2025, highlighted the law and politics of international criminal justice.

The International Bachelor in Psychology in Leiden is a broad study with a strong focus on research.

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

What is emotion in human and nonhuman animals? How do emotions get to expression and how do they impact on our interactions, our decisions to trust, distrust or cooperate? Why do we mimic and synchronise affective processes?

Cognitive psychology is the study of cognitive functions such as attention, memory, consciousness, emotion, language and action control. The goal is to understand the complex relationships between brain, mind and behavior.

Are you thinking about studying Clinical Psychology? Learn more and watch the videos.

Are you thinking about studying School Psychology? Learn more and watch the videos.

In the specialisation Occupational Health Psychology, part of the Master in Psychology, you will integrate knowledge of several disciplines in psychology, with a clear focus on workers and their work setting.

The MSc in Psychology (research) is a two-year programme that is focused on acquiring research skills in a particular field of psychology.

What Determines Perceptions of Bias toward the International Criminal Court? Evidence from Kenya. In this article, published on the website SAGE Journals in the Journal of Conflict Resolution, the authors Geoff Dancy, Yvonne Marie Dutton, Tessa Alleblas, Eamon Aloyo examine the attitude towards international…

In the Dutch healthcare system, only MHC psychologists (GZ-psychologen) are licensed to practice psychology unsupervised.

Are you thinking about studying the Research Master in Psychology? Learn more and watch the videos.

Psycho-physiological reactions to stress.

The second and final report on the Netherlands‘ crime-terror nexus has analysed all fourteen profiles of individuals arrested in 2015 for offences of terrorism.

The Developmental Psychology specialisation of the Research Master’s in Psychology offers a strong theoretical background to provide the varied knowledge-base needed for a thorough understanding of emotional and cognitive development across childhood and adolescence.

Developmental and Educational psychology is concerned with the developmental course and dynamics of cognition, self-regulation, and emotional competence, and the implications for educational and clinical practice.

Psychology Lab on Wheels makes research accessible to all: with our mobile lab we literally reach people on the street. From bustling city centres to remote areas, our lab travels all over, making it easy for you to participate in our research. And with your help, we gain new insights and deepen our…

For Humans of Psychology, students and staff will be put into the spotlight. At our institute prizes are won, exiting research is conducted, knowledge is harnessed, public meeting are organised and open science is highlighted. Take a look behind the scenes.

In the specialisation Applied Cognitive Psychology, part of the Master in Psychology, you develop all the practical and academic skills necessary to apply psychological knowledge to real-life problems in working environments and organisations.

In the specialisation School Psychology, part of the Master in Psychology, you will learn how to create positive learning environments to support talent development and potential for learning as well as practical clinical skills for all students, regardless of their intellectual or mental states.

This minor provides a representative and coherent overview of the entire discipline of Psychology.

Students and lecturers from around the world bring an international and multi-cultural perspective on psychology to the class room. This, combined with the fact that all teaching and discussions will be in English, that we offer cross-cultural courses, and that you can study abroad for a semester, ensures…

The International Bachelor in Psychology in Leiden takes you along all the different subdisciplines in Psychology.

The mobile lab, the Psychology Lab on Wheels, brings science to the general public!

When psychologists repeated a hundred studies in 2015, their results differed in two-thirds of the studies. ‘Research into research is not a luxury but a necessity,’ says Professor of Methodology and Statistics of Psychological Research Mark de Rooij. ‘My aim is to improve psychological research, to think…

Students and lecturers from around the world who have obtained international training, experience and exposure bring an international and multi-cultural perspective on psychology and being a psychologist to class.