Open access (OA) refers to academic output that is freely available online, without restrictions. This hugely increases the visibility of research.

On this page you find all the ways through which the Institute of Psychology aims to foster Open Science.

Getting your bachelor’s degree in Holland? Visit Leiden Universities Bachelor’s Open Day and explore which bachelor’s programme might suit you best.

In the podcast series 'Open Geesten', historians Joost Welten and Nadia Bouras tell us about their research and how history is intergrated in modern society. In short: what can the past tell us about the present?

The NVIC library is a public, academic reference library. Entrance is free—no membership needed—and offers access to our book collection and two reading rooms, which have a WiFi connection. It is not possible to borrow books from our library.

Met de val van Balkenende IV laait de discussie over het functioneren van politieke partijen binnen ons democratisch bestel weer op. Opgeblazen ego’s, overambitieuze politici en partijpolitieke machtspelletjes zouden echte democratie in de weg staan. Maar die discussie is niet nieuw.

Please follow the links below to the open MSc or PhD positions:

The concept behind GraspOS is to build the European Federated Open Metrics Infrastructure in a decentralised way, where: different types of data come together to create metrics; tools and services are developed to improve EU or global infrastructures but are also shared with national or institutional…

PhD defence

Leiden University investigates biodiversity not only in the Netherlands, but also abroad, with the goal of improving global nature conservation. We do so in collaboration with local universities. Education is also high on our agenda.

BE-OPEN is a structural project funded under the Erasmus+ Capacity Building in Higher Education action. The project is coordinated by the University of Novi Sad, Serbia. The main objective of the project is to develop conditions for the implementation of the core principles of Open Science at universities…

Development of an aggregated impact indicator to measure decoupling.

Jasper de Bruin, Guus Besuijen, Hans Siemons & Jeroen van Zoolingen (2012). De romeinse nederzetting bij het tegenwoordige Goedereede heeft waarschijnlijk een belangrijke functie gehad in de overslag en distributie van diverse goederen, waaronder keramiek en voedingsgewassen. De opgraving van deze nederzetting…

Different ways in which physical environments impacted on the cultural imagination of Greco-Roman antiquity.

In the master’s programme in Archaeology, you can follow courses on the archaeology of Europe, deepening your understanding of the continent’s long history.

In September 2021 the CWTS open science policy came into effect. This policy deals with open access publishing, open research data, and open source software. All research projects carried out at CWTS are subject to the CWTS open science policy.

Here you can find information about our next big event!

Want to study abroad? Visit the Master’s Week of Leiden University and find which master's programme taught in Leiden or The Hague is right for you.

OSCL is a learning community where anyone associated with Leiden University can learn and talk about open science practices. Example events are Open Science cafés, workshops, and walk-in-hours. The what Open science is an umbrella term for an approach to science that aims to make scientific…

Leiden University has an Open Access policy and a Copyright Information Office.

Leiden University policy requires researchers to make all their Leiden-affiliated peer-reviewed articles available.

The opening of the Academic Year 2024-2025 took place on Monday 2 September 2024 in Pieterskerk Church.

Study information

De online cursis begint op maandag 12 november en de inschrijving is nu geopend.

It is advisable to open Dutch bank account once you move to The Hague (if you do not have one already), as it will allow you to get many other services such as a mobile phone contract, transportation, etc.

Jelle van Buuren, Assistant Professor at Leiden University, appeared in Dutch newspapers the Algemeen Dagblad and Het Parool to discuss conspiracy thinking and the pandemic.

Study information

The recently introduced nature-originated deep eutectic solvents, so-called natural deep eutectic solvents (NADES) are considered as truly green solvents, which composed of natural ingredients found abundantly in organisms.

The opening times of the Humanities buildings vary. The Lipsius building is opened during evenings as well, the other faculty buildings retain office hours.

This project aims to develop advanced data analysis methods for monitoring and increasing our understanding on biodiversity dynamics in nature reserves such as the Oostvaardersplassen.

Starting from Husserl’s somewhat controversial claim about the immortality of the constituting subjectivity, this thesis uses the limit-case of death in order to present a phenomenological exploration of the notion of subjectivity and its relationship to nature. It also offers a second-order discussion…

Environmental humility is integral to addressing the climate crisis, but humility can also lead to political domination. How can humans relate to nature more humbly without risking domination?

A national survey conducted by Dutch newspapers Dagblad van het Noorden, Turbantia, Brabants Dagblad and the Dutch Federation of Trade Unions (FNV) shows that staff working in disability and mental health care often face violence in the workplace. In the three northern provinces of the Netherlands,…

Het boek met de titel ‘the story of constitutions’ probeert interdisciplinair te begrijpen waar de grondwet vandaan komt en waarom het juist nu in korte tijd viral is gegaan. Waarom is dit oeroude fenomeen de laatste jaren zo in populariteit toegenomen en ook nog eens in een tijd, waarin democratieën…

Nature and History, Towards a Hermeneutic Philospohy of Historiography of Science

For a certain period the municipality of The Hague collaborated with the Salafist Quba mosque. The reason for the collaboration was to keep an eye on for radicalised youngsters. But as the collaboration progressed, the mosque became a breeding ground for Jihadists.

Inaugural lecture

We develop open micro cavities to trap light in small volumes and thereby increase the interaction with intra-cavity emitters. Important aspects in this development are the optical penetration in the mirrors, coupling between optical modes, and scattering and clipping losses.

Promotores: G.R. de Snoo, W.T. de Groot, Co-promotor: C.J.M. Musters

Natural Computing is the field of research that investigates both human-designed computing inspired by nature and computing taking place in nature, i.e., it investigates models and computational techniques inspired by nature and also it investigates phenomena taking place in nature in terms of information…

As a contribution to the changing legislation and evolving societal attitudes concerning environmental issues, this project aims to enhance and manipulate the plants’ own natural defense mechanisms against western flower thrips (WFT).

Operators in the Lexicon opens with an old chestnut: why are there no natural single word lexicalizations for negations of the propositional operator and and the predicate calculus operator all: why neither *nand nor *nall?

On the 2nd of September Jiyan Qiao successfully defended a doctoral thesis and graduated.