Governments in parliamentary democracies have limited time in office to fulfill their policy agendas. So, how do they optimise the timing of legislative bills to assure their passage and avoid lengthy parliamentary scrutiny? This question is especially puzzling under coalition governments, in which…

This thesis describes how different colours of light affect various aspects of the growth and development of Arabidopsis and tomato plants⁠.

Promotores: H.S. Overkleeft; G.A. van der Marel Co-Promotor: B.I. Florea

Power and money are not enough for big tech entrepreneurs who are investing billions in digital nations. Reijer Passchier, Professor of Digitalisation and the Democratic Rule of Law (OU) and Assistant Professor of Constitutional Law, and Wim Voermans, Professor of Constitutional Law, share their concerns…

China is a one-party regime, yet elections are held for the local congresses. PhD candidate Wang Zhongyuan investigated how the Communist Party uses this democratic instrument to strengthen the authoritarian regime. PhD defence 31 January.

Promotor: Prof.dr. S. Haring

PURPOSE: The aim of the study was to develop a cheap and fast method to produce hollow microneedles and an applicator for injecting vaccines into the skin at a pre-defined depth and test the applicability of the system for dermal polio vaccination.

In this article, Gerrit Dijkstra and Jos Raadschelders from the Institute of Public Administration, argue that Bosnia-Herzegovina survives so far on the basis of negative legitimacy.

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

We found that, next to the effectiveness of the intervention, it’s also very likely that the intervention is cost-effective compared to attention only.

On 12 September 2019, Michiel Rhoen defended his thesis 'Big Data, Big Risks, Big Power Shifts: Evaluating the General Data Protection Regulation as an instrument of risk control and power redistribution in the context of big data'. The doctoral research was supervised by Prof. G.J. Zwenne and Prof.…

The STAP study examines the cost-effectiveness of Written Exposure Therapy (WET) for post-traumatic stress disorder (PTSD) symptoms in primary care settings.

This week we can vote in the University elections. The University Council and faculty councils are incredibly important. During the fantastic seminar on 50 years of participation that the University Council recently held, our former Rector Carel Stolker aptly said: ‘Without participation, there would…

This study examined the effects of a classroom-focused intervention on different domains of early literacy. The intervention consisted of shared e-book reading combined with a print referencing technique done via a SMART board. The specific goal of the study was to examine whether children could be…

Promotor: P.J.J. Hooykaas, Co-Promotores: P.B.F. Ouwerkerk, M. Wang

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

Irna Hofman defended her thesis on 10 January 2019.

On Friday 7 March 2025 Adam Knight successfully defended a doctoral thesis and graduated.

The transition period in which men become fathers might provide an important window of opportunity for parenting interventions that may produce long-term positive effects on paternal care and, consequently, child development. Existing prenatal programs traditionally focus on maternal and infant health…

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).

Promotor: Prof.dr. G.P. van Wezel, Co-Promotor: E. Vijgenboom

The central question in this book is whether there is a human right to family unification.

This project is funded by the Dutch Cancer Society. The project will be part of an ongoing research line aimed at identifying mechanisms of cancer therapy resistance and metastasis. In this project, it will be investigated how the Grainyhead family of transcription factors controls therapy response…

While many healthcare professionals indicate that they frequently use placebo effects and their mechanisms, there is little formal training on how to deal with placebo and nocebo effects in clinical practice. This project aims to address this gap between scientific knowledge on placebo and nocebo effects…

The PID-directed shift in PIN polarity has been broadly accepted as one of the essential mechanisms for the regulation of auxin transport polarity.

Nematic liquid crystals form the key ingredients of most tv screens. The active version of these complex fluids forms a useful model for physicists to research the responses of active matter—like bacteria or traffic flows—to mechanical and geometrical cues. An international research team publishes their…

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…

On 3 December 2018 Melanie Fink, Postdoctoral Researcher at the Europa Institute, spoke at the Conference ‘Managing Migration Through Criminal Law Tools’.

What is the effect of training children to exercise self-control? Niko Steinbeis has been awarded a major European subsidy to find the answer to this question. The innovative aspects of this research are the target group, an individual approach to the training and examining the child brain the scann…

Leiden University’s President of the Executive Board, Professor Annetje Ottow, has been reappointed for a second term by the Board of Governors.

When talking about innovative technologies, Blockchain should certainly be mentioned. In the Honours Class ‘Board the Blockchain Train!’, students learn about the influence of technology on, for example, banking transactions or real estate appraisal.

Leiden University has a new Executive Board. Since 8 February 2021, Annetje Ottow has been the new President and Hester Bijl the new Rector Magnificus of the Board, while Martijn Ridderbos has continued in his role as Vice-Chairman.

ChatGPT, the text-generating chatbot, has recently become available for anyone to use. Is this artificial intelligence (AI) tool a threat to our teaching?

Rigid materials break more easily than floppy ones. This simple observation allows to predict and control the width of cracks. Theoretical understanding of how materials break is useful in for example the production of cars or screens. Publication in PNAS.

We asked a lot of everyone last year. The Personnel Monitor showed that the workload was high in 2022 and Covid took its toll. I therefore think everyone deserves some downtime. Time away from the daily grind.

If we need funding for a project, equipment or research at the university, we automatically think of the Dutch Research Council or other grant providers. But more and more researchers are managing to connect with people who care about the university.

Several Dutch universities have said they do not want foreign student numbers to grow any more in some of their degree programmes. They are reaching maximum capacity. We are also alert to this in Leiden, but I see many positive aspects to the intake of international students.

Leiden University’s Board of Governors is pleased to announce the appointment of Tjerk Kroes to the Board of Governors by the outgoing Minister of Education, Culture and Science, Gouke Moes.

Reijer Passchier universitair docent Staatrecht in Leiden en hoogleraar Digitalisering en de democratische rechtsstaat aan de Open Universiteit, presenteerde op 11 februari zijn bevindingen over het gebruik van digitale systemen bij de uitvoering van wetten, aan de Vaste Kamercommissie Digitale Zaken,…

Marileen Dogterom, Professor bionanoscience in Delft and Professor molecular physics in Leiden, will take a seat at the KNAW board as of June 1st. She is appointed for four years, one day per week. Dogterom succeeds Nobel Prize winner Ben Feringa, who completed his term.