Every organisms in the tree of life faces the same challenge: the length of its DNA exceeds the volume of the cell it needs to fit in. Several strategies have evolved to solve this problem, one of them being the expression of proteins that bind and organize the DNA.

Promotores: Prof.dr. A.G.G.M. Tielens & Prof.dr. L. Kaper (UvA)

Study the MSc in Political Science: The Politics of Articficial Intelligence in The Hague. Critically assess the political applications and consequences of AI and familiarise yourself with foundational Political Science theories.

This dissertation provides a novel perspective on the interaction between quantifier scope and ellipsis. It presents a detailed investigation of the scopal interaction between English negative indefinites, modals, and quantified phrases in ellipsis. One of the crucial observations is that a negative…

Painstaking research in Dutch and Portuguese archive materials, so far poorly assessed on the topic of social relations, reveals intense and intricate associations between different European individuals both in terms of ethnicity and social strata.

On 5 September, Elize de Mul defended the thesis 'Digital Döppelgangers: identity in the Culture of Imagination'. The doctoral research was supervised by Simone van der Hof and Esther Keymolen.

Ms. Monica Klasing Chen defended her thesis on 16 December 2020

Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.

Understanding the nature, characteristics and function of the secular vocal intabulations and dances found in Italian printed keyboard sources in the 16th century

On 13 December 2018, Stijn Voskamp defended her thesis 'Onderwijsovereenkomst'. The doctoral research was supervised by Prof. mr. A.G. Castermans.

This research delves into a region of space known as the interstellar medium (ISM), which is essentially the area between the stars filled with gas and dust.

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

On 9 April 2020, Mohamed Azizi defended his thesis 'Reflecties op Wereldburgerschap: In de spiegel van Afghanistan en Nederland'. The doctoral research was supervised by Prof. P.B. Cliteur en Prof. W. Veugelers (Universiteit voor Humanistiek).

Lecture

This thesis investigates the grammar of Sheko, an Omotic language spoken in southwest Ethiopia.

This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…

Supervisor: P.J.J. Hooykaas

From fake news to COVID-19 conspiracies, debates about truth claims have become more prominent during the past decade. Taking a global, comparative perspective, the minor Disinformation and Strategic Communication in Global Media focuses on the broad spectrum of contested narratives subsumed under the…

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

There is a link in adolescents between brain connections and impulsiveness. Leiden researchers have discovered that these connections also predict which adolescents will make more impulsive choices two years further on.

Jeff Fynn-Paul, lecturer at Leiden University’s Institute for History, was recently awarded the European History Quarterly’s 2016 Prize for his article “Occupation, Family, and Inheritance in Fourteenth-Century Barcelona: A Socio-Economic Profile of One of Europe’s Earliest Investing Publics.”

Development of effective VR training for International Law of Armed Conflict (ILAC)

Below you can read about studies we have carried out in the past.

Within the Graduate School you can conduct your PhD research in a wide range of subjects across the Social and Behavioural Sciences, with five distinct research areas offered by its Institutes.

This project aims to identify which aspects of exploring a novel environment produce beneficial effects on memory. The effects of novelty will be investigated across the lifespan, including children, adolescents and older adults.

Have you ever stood in front of an abstract artwork and thought: “a monkey could have done that!”. As it turns out, you are wrong.

This study aims to answer two main research questions: (1) What are the main predictors of work ability in employees with migraine? (2) Can we optimise work ability in employees with migraine using a web-based intervention focused on these relevant predictors?

In the first year, the Linguistics programme will provide you with a sound basis for specialisation, while training your academic competences. In the second year, you will choose one of our four specialisations. While focusing on this track in your second and third year, you may also choose electives…

Could water be present in planet-forming disks before the formation of rocky planets? The James Webb Space Telescope may have found evidence for that. Webb has for the first time observed water in the inner disc around young star where at greater distance, giant planets have already formed. The research…

When we are in a conversation, how do we know exactly when to respond, and how do we manage to respond so swiftly, yet without interrupting our interlocutors? Can speech melody – in particular utterance final “boundary tones” – help us determine who will speak next, or are these cues too late in the…

How do dissociative states affect the ability to suppress emotional distraction (in the context of a working memory task) in patients with Borderline Personality Disorder?

The factors that dynamically sculpt the inter-regional correlation of brain patterns are poorly understood. Here, we test the hypothesis that they are shaped by the catecholaminergic neuromodulators norepinephrine and dopamine.

Research into the development of privacy-friendly care games for children.

What are relationships between student teachers’ personal characteristics, learning experiences and perception of external environmental aspects impacting teacher career and their commitment to teaching?

Social Information Processing in Children with and without Hearing Loss

Making sense of the world around us depends on the fundamental ability to parse the world into distinct objects and keep track of them. This process is defined as object individuation. Research indicates that it is not always easy for infants.

This PhD project investigates the distribution and interpretation of quantity expressions in relation to the mass/count distinction cross-linguistically.

You can ask virtual assistant Siri about the weather, but you can’t have a real conversation with it yet. You can’t refer to anything that’s been said before, or ask the system why it says what it says. Stephan Raaijmakers, Professor by Special Appointment from TNO, hopes to change this.

What categories exist in the languages of pastoralists? Do these semantic concepts reflect universal or languagespecific tendencies? What (environment? culture?) governs the similarities (or the differences) attested crosslinguistically in cattle colour systems?

This dissertation investigates the interaction of aspect and subjectivity in modal constructions.

How are interests embedded and experienced in daily life and to what extent can their origin and development be understood in terms of this contextualization?

How to come to valid risk stratification of alcohol use disorder?

Social anxiety disorder is one of the most common disorders in children and young people. Social anxiety is characterized by excessive fear and avoidance of social situations. The primary fear in children with social anxiety is that they will be negatively judged by others. To date, the most frequently…

The Editors of PAIR are always interested in suggestions for themed editions. Anyone wishing to propose a theme and/or to assist as a ‘guest editor’ should contact one of the editors of PAIR.

The bachelor's programme in Psychology in Leiden covers the full breadth of psychology. Our bachelor's students have the opportunity to specialise. Our master's students prepare themselves for a career as a ‘scientist - practitioner'. In the one year master's programme the emphasis is on practise; in…

In science, it is of vital importance that multiple studies corroborate the same result. Researchers therefore need to know all the details of previous experiments in order to implement the procedures as exactly as possible. However, this is becoming a major problem in neuroscience, as animal studies…