The starting hypothesis of the project is that secrecy is not always inimical to democratic governance as conventional wisdom has it.

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.

Source: Journal of Investigative Dermatology, Volume 134, pp. S44-S44 (2014) ISBN: 0022-202X

Source: International Journal of Cosmetic Science, Volume 37, Number 1, pp. 148-148 (2015) ISBN: 0142-5463

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…

Drawing is one of the most unique human behaviours. Like language, drawing is a mode of communication and a cognitive tool that from an early age allows us to interact with others. Is the early development of drawing skill influenced by the social environment? If so, how?

Promotor: Prof.dr. P. Hooykaas, Co-promotor: Dr. R. Offringa

On the 16th of December, Ruixue Wu successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Ruixue on this achievement!

PhD defence

PhD defence

The skin barrier function is provided by the stratum corneum (SC). The lipids in the SC are composed of three lipid classes: ceramides (CERs), cholesterol (CHOL) and free fatty acids (FFAs) which form two crystalline lamellar structures. In the present study, we investigate the effect of CER chain length…

With the new SSH labs and their organisation, the lab coordinators will also fulfill a new role. An interfaculty workgroup -consisting of staff from Psychology, Pedagogical Sciences, Humanities and SOLO - is currently discussing the new role of the lab coordinators, and how the lab coordinators can…

Leiden psychologist Wilco van Dijk and communication scientist Jaap Ouwerkerk of VU University Amsterdam published a book about the emotion Schadenfreude. The authors describe what the emotion Schadenfreude really is, when people experience the emotion, and what role it plays in social relations.

Eduard Fosch-Villaronga, Hadassah Drukarch and Bart Custers from eLaw - Center for Law and Digital Technologies, explore together with Pranav Khanna, eLaw alumnus, the influence of automation on human–robot interaction and responsibility in surgery innovation.

Meet the scientists within the LED3 community

The routine assumption that Upper Palaeolithic early modern humans in Europe were regular fire users who produced fire at will has never been tested against the archaeological record. Utilizing literature, database and microwear analytical approaches, this project seeks to establish the role and forms…

On 20 October 2021 Michael Ramsden defended the thesis 'The Role of the United Nations General Assembly in Advancing Accountability for Atrocity Crimes: Legal Powers and Effects'. The doctoral research was supervised by Prof. N.M. Blokker.

Should the law and norms applicable to armed conflict include a distinct category covering the transition from armed conflict to peace, jus post bellum, and if so what are its characteristics?

In this paper, Sarah Giest and Bram Klievink highlight the effects of AI implementation on public sector innovation. This is explored by asking how AI-driven technologies in public decision-making in different organizational contexts impacts innovation in the role definition of bureaucrats.

In this dissertation, electrophysiological (EEG) and behavioural measures are used to investigate how allophonic tonal variants and sub-phonemic features are processed during Mandarin and Dutch speech production, visual processing of written words and reading aloud.

Why do certain incidents of serious violence end lethally whereas others do not? What role do personal characteristics of offenders and victims play and how do immediate situational factors influence outcomes?

Promotor: Prof.dr. R.M.H. Merks

In this project, the hypothesis that language contact crucially impacts the development of spatial grammar and phonology is investigated.

Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.

The following dissertation reconstructs Paul Natorp's philosophical psychology. It argues that psychology's main object is the lived experience of concrete subjects, understood as a transcendental structure of logical-reflexive conditions for the recognition, appropriation, and evaluation of objective…

This dissertation concerns the role of analogy in Kant’s “Critique of the Teleological Power of Judgment”, especially the role of analogy for the formation of the concept of a natural end (Naturzweck). A ‘natural end’ is a ‘regulative concept’ of the reflective power of judgment, that is, a heuristic…

For the first time, a group of international and interdisciplinary researchers led by Karline Janmaat and her former MSc Student Chirag Chittar, have tested the several hypotheses on music simultaneously in a modern foraging society during their daily search for tubers – their staple food. They found…

On 23 juni 2019, Zygimantas Juska defended his thesis 'The Role of Collective Redress Actions to Achieve Full Compensation for Violations of European Union Competition Law'. The doctoral research was supervised by Prof. dr. T.R Ottervanger.

In recent years, the question why citizens (do not) support democratic innovations has attracted increasing academic attention. In this research note, Van Der Does & Kantorowicz for the first time empirically verify what drives citizens’ instrumental considerations in their evaluation of a DI.

Antoaneta Dimitrova, Professor Comparative Governance at Leiden University, Honorata Mazepus, Assistant professor at Leiden University and Dimiter Toshkov, Associate Professor at Leiden University, together with three other authors researched which aspects of state capacity might contribute to opening…

Team leaders and other immediate supervisors play an important role in facilitating inclusiveness within public organisations. This is the finding of research by public administration expert Tanachia Ashikali. PhD defence 20 November.

Anneke Wurth, PhD candidate at ICLON, wanted to gain insight into what works well in oral language education in the school subject of Dutch in the upper years of havo and vwo. The role of feedback became central to her research.

New archaeological research into grave goods and skeletal material from the oldest grave field in the Netherlands shows that male-female roles 7,000 words ago were less traditional than was thought. The research was conducted by a multidisciplinary team of researchers led by Archol, the National Museum…

On 5 September 2017, Alessandro Tonutti defended his PhD dissertation

A month ago it was Marc Baggelaar, and now Hans Kistemaker too has obtained his PhD cum laude at the Leiden Institute for Chemistry (LIC). ‘He has made ground-breaking contributions to the world of protein modification,’ says PhD supervisor Gijs van der Marel. Kistemaker obtained his PhD on 11 May…

Mum works in healthcare, dad in engineering and everyone is straight: many textbooks still show men and women in stereotypical roles, PhD candidate Tessa van de Rozenberg has discovered. She also found that children’s views on these topics often closely resemble those of their parents.

The immune system plays a paradoxical role in the spread of breast cancer. Some immune cells contribute to metastasis, while other cells can be activated to strengthen the effect of chemotherapy. Kelly Kersten made this discovery in her PhD research. PhD defence 7 February.

The new Executive Board of the Institute of Psychology became effective on 1 February 2022. Scientific director Andrea Evers tells us where she gets her energy from.

How is the EU transforming from a soft power to a geopolitical actor, and what does this mean for the EU’s partners and global security? On Friday 13 December, a roundtable discussion offers students insights into these evolving dynamics, bridging theory and practice.

The impact of a ceasefire shifts over the course of a conflict, as conflict party leaders learn more about each other’s military and political aspirations and adapt their use of ceasefires accordingly. That’s the key message of the dissertation of Valerie Sticher, PhD-candidate at the Faculty of Governance…

The ‘Contagious!’ exhibition was set to open at Rijksmuseum Boerhaave in April but had to be postponed because of the corona crisis. The museum hasn’t been twiddling its thumbs in the meantime. The exhibition will now open on 16 July, and the corona crisis has a major role.

Leiden University and the Leiden Bio Science Park can make a significant contribution to the earning capacity of the Netherlands. This is the finding of the National Investment Agenda presented today.

Three new ministries have been formed in the Netherlands: Asylum and Migration, Housing and Spatial Planning & Climate and Green Growth. Of course, this is not merely an administrative act. These ministries carry a strong and political charge and play a crucial role in shaping a government's political…

Protest is a human right and an important way to hold the authorities to account. But how does the right to protest relate to academic freedom and the right to education?

Europe in lockdown: Member States acted on their own initiative to into lockdown, and all back to normal at the same time? It’s not that simple, and it doesn’t have to be.

Frontex, the European Border and Coast Guard Agency, is currently facing serious criticism. Over a short space of time, it has been significantly expanded. And the larger the Agency becomes, the more often it comes under fire.

In the heart of The Hague stands the Peace Palace, home to one of the most important courts in the world: the International Court of Justice. PhD candidate Joris van de Riet spoke to 'Het Klokhuis' about the role of the Court.

Insurers determine for themselves whether someone has committed fraud, impose sanctions immediately and hardly ever report it. As a result, police, prosecutors, and criminal courts are side-lined. And policyholders are sometimes left out in the cold. Bart Custers, professor of Law & Data Science at…

Annetje Ottow, president of the Executive Board of Leiden University, has been the new chair of the Leiden-Delft-Erasmus (LDE) strategic alliance for just two months. What does she want to achieve during her two-year chairmanship?

Political scientist Simon Otjes (Leiden University) receives a grant from The Dutch Research Council (NWO). The grant is part of the SGW Open Competition XS, which aims to stimulate innovative scientific research within the Social Sciences and Humanities domain. Otjes receives the grant for his research…