It has been found that the better a prisoner is treated, the more effective the sentence. Leiden criminologists therefore research how detention can be improved in such areas as prison life and contact between prisoners and their children.

The Institute of Criminal Law and Criminology conducts extensive research on imprisonment. Sending a person to prison is the most severe form of punishment that can be applied in the criminal justice systems of European countries. In most countries, the number of prisoners has risen in recent decades.…

The Life in Custody (LIC) Study comprises a large-scale research project into prison climate and the quality of prison life in Dutch prisons.

The Prison Project investigates to what extent imprisonment has consequences for the relapse, health, career and intimate relations of the (ex-)prisoners.

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On 1 October 2019, Emile Cammeraat defended his thesis 'Economic Effects of Social Protection'. The doctoral research was supervised by Prof. K.P. Goudswaard and Prof. P.W.C. Koning.

How do different emotional expressions influence the behavior of other people in negotiations?

Promotor: Prof.dr. A. Achucarro, Co-Promotor: J.W. van Holten

Prison staff are working under high pressure. The current proposal for cell sharing is the final straw. Associate Professor Esther van Ginneken appeared on Dutch news programme ‘Nieuwsuur’: ‘Serious incidents have occurred, including the murder of a cellmate.’

What role play stress and fear in forming of nocebo hyperalgesia?

Promotores: W.J.G.M. Peijnenburg, G.R. de Snoo, Co-promotor: M.G. Vijver

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

We study how communication can heal and harm when patients are confronted with an illness. Most of our studies focus on serious illnesses such as advanced cancer. Communication lies at the heart of medicine, yet we do not always know which specific communication helps patients. Moreover, many complaints…

Can excessive worrying be reduced via stimulation of the vagus nerve?

The thesis describes terrestrial field trials aimed to detect side-effects of pesticides within the framework of pesticide registration procedures. Field trials were developed using vascular plants Brassica napus and Poa annua, caterpillars Pieris brassicae and effects on decomposition were studied…

On 11 October, Amanda Pasma defended the thesis 'Re-entry support from prison-based and community-based professionals'. The doctoral research was supervised by Paul Nieuwbeerta, Hanneke Palmen and Esther van Ginneken.

Er is een nijpend cellen- en personeelstekort in Nederlandse gevangenissen. En dit is niet voor de eerste keer. Miranda Boone, hoogleraar criminologie en vergelijkende penologie, sprak met Trouw over de problematiek: ‘Het aantal gevangenen is het resultaat van beleid.’

Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…

This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.

Kohei Suzuki, Assistant Professor at Institute of Public Administration, and two other authors researched the topic of innovation by governments in response to expected population decline.

Anthropogenic noise negatively affects wildlife in a wide range of taxonomic groups.

Compared to other countries, Dutch prisons have relatively few inmates. But who are behind bars in our prisons? Professor of Criminology and Comparative Penology Miranda Boone: ‘It's not the bad, but often the sad and the mad.’

Hilde Wermink, Assistant Professor at the Institute of Criminal Law & Criminology was interviewed on this topic for an article published in US News on 13 May.

Can epigenetic changes explain associations between early life stress and health outcomes?

There is concern about the threat that nanoplastics (NPs) may pose to both wildlife and humans. This thesis explores the mechanisms of toxicity of polystyrene nanoparticles (PS-NPs) in chicken embryo.

The effects of anthropogenic noise on interactions between predators and their prey are still little understood.

How can photorealistic 3D scenes help predict whether interventions in urban public spaces will foster citizens' sense of security?

Mensen jarenlang opsluiten in een gevangenis werkt niet en kost de samenleving veel geld, zeggen experts. Hoogleraar Criminologie en Vergelijkende Penologie Miranda Boone stelt tegenover NEMO Kennislink dat het anders moet: ‘Het strafrecht zoals we het nu inzetten, werkt niet.’

In this article, Martin Sievert and Jonas Bruder investigated whether and how administrative burdens influences citizens' perceptions of welfare policies and attitudes towards beneficiaries.

Promotors: Prof.dr. P.G.L. Klinkhamer, Prof.dr. P.M. Brakefield

Jaroslaw Kantorowicz and Rok Spruk examine the contribution of institutional reforms to economic growth.

What relationships exist between different types of PLCs and cognitive differentiated teaching?

What are the biological effects of Chinese herbal medicine in regulation of cancer cell metastasis?

Promotor: Prof.dr. P.G.L. Klinkhamer, Co-Promotor: T.J. de Jong

What is the optimal way to utilise intermediate assessment in improving study behaviour and study success?

The role of the interfacial environment during electrochemical reactions has been increasingly valued, especially for those reactions involving protons or hydroxyl ions.

Leids onderzoek naar bestraffing komt tot stand uit verschillende disciplines. Het onderzoeksproject kent een juridische, criminologische, sociaalwetenschappelijke en filosofische invalshoek.

Can we link multiple components from herbal extracts with their biological activities?

This article examines how immigration from Central and Eastern Europe influences political support for Eurosceptic parties.

This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.

Three types of PLCs are studied, varying on the dimension of autonomy of and interdependency between teachers: Joint work, Aid and assistance and Shared practices.

This research explores how international organisations responded to the humanitarian and human rights challenges brought about by COVID-19.

Songbirds as vocal learners learn their songs and song preference from social tutors⁠. Tutor choice for both song and preference learning are important to characterize for understanding individual learning performance and cultural transmission of song⁠.

A complex community of microbes develops in the infant gut shortly after birth. We call this community the infant gut microbiota. The microbiota influences the health of the infant, which makes the composition and function of the infant gut microbiota an important topic to study.

To what extent does using 360 immersion to a speaking task change the elicited speech, compared to conditions with 2D presentations?