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

On 5 October, Katherine Filesia defended the thesis 'Speaking the same language: the introduction of the Anglo-American trust into the Dutch legal system'. The doctoral research was supervised by Pim Huijgen and Frans Sonneveldt.

How were Spanish commanders fighting in the Low Countries between 1567 and 1577 portrayed in Spanish and Dutch narrative sources during the Eighty Years War?

Mission Director: Dr. Carina van den Hoven (The Netherlands Institute for the Near East, Leiden University)

Subproject of

Political scientists Tom Louwerse, Simon Otjes & Cynthia van Vonno introduce the Dutch Parliamentary Behaviour Dataset, a record of parliamentary (voting) behaviour in the Dutch Tweede Kamer (Second Chamber, House of Representatives) since 1945.

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

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

The opening of the Academic Year 2018-2019 took place on Monday 3 September 2018 in Pieterskerk church.

The opening of the Academic Year 2017-2018 took place on Monday 4 September 2017 in Pieterskerk church.

The opening of the Academic Year 2020-2021 took place on Monday 31 August 2020 in Pieterskerk church.

The opening of the Academic Year 2016-2017 took place on Monday 5 September 2016 in Pieterskerk church.

The opening of the Academic Year 2019-2020 took place on Monday 2 September 2019 in Pieterskerk church.

On Sunday 28 October, the annual open day of the Old Observatory in Leiden takes place. During this day everyone can visit the Old Observatory for free and enjoy activities in this historic building.

Are you intending to become a student shortly? And are you unsure about what you're going to study? If so, come to the Open Day on 15 October.

The aim of the Indonesian-Dutch Literature Collective (which is allied to the Society of Dutch Literature (MNL)) is to support research into the literature of and about the Dutch Indies, from the era of the Dutch East India Company to the present. Starting in 1986, the collective has published its own…

On Sunday 28 October, the annual open day of the Old Observatory in Leiden takes place. During this day everyone can visit the Old Observatory for free and enjoy activities in this historic building.

The number of lions in Kenya is decreasing alarmingly, due partly to the encroaching cities and the development of the countryside. Together with local scientists and inhabitants, Leiden biologists are studying how this decline can be halted. ‘Lions are cleverer than we thought.’

Healthcare Information Systems (HIS) are essential for modern healthcare delivery, yet their development faces significant challenges including heterogeneous data formats, regulatory compliance, and the growing demand for AI-driven decision support.

Promotores: H.A. Udo De Haes, P.M. Brakefield

In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…

On 1 October 2022, Reijer Passchier was appointed as Professor Digitalisation and the Democratic Constitutional State at the Open University. Reijer is also working at Leiden University as Assistant Professor at the Department of Constitutional and Administrative Law.

How geographical and institutional openness in Dutch Guiana fostered a unique colonial economy. This publication is part of the Early American Places Series.

Religion, Class, and the Postwar Development of the Dutch Welfare State. Dennie Oude Nijhuis.

Learning to cycle without a handbrake, saying sorry if you're late for a lecture and fathoming out the weird sounds of Dutch. Leiden's new international students get a crash course in Dutch culture during their introduction week.

Dr. Foks obtained this fellowship for the project “Can promotion of efferocytosis induce regression of atherosclerosis?”, in which she aims to identify novel targets to promote regression of atherosclerosis. This research grant allows her to initiate independent research for the next three years.

On Wednesday 28 September 2022, the Opening Ceremony of the European Law LL.M. took place on campus at Leiden Law School. Following Dr Ben Van Rompuy and Professor Jorrit Rijpma’s warm words of welcome for the incoming students, Dr Vasiliki Kosta presented two student prizes from the preceding academic…

Political scientists Joop van Holsteyn and Tom Louwerse (Leiden University) find that the Dutch government is having a hard time coping with referendum outcomes in general, and ‘anti-European’ sentiments among voters in particular.

Of the 32 historic buildings that are opening their doors to the public on the Open Monument Days on 8 and 9 September, five are University buildings. The Hortus Botanicus is also open.

In this interview, Karlijn Hermans, the university's Open Science coordinator, introduces herself and the Academia in Motion programme.

How does open government affect the level of public trust?

The Dutch universities, university medical centres and Research Council have reached an agreement with Elsevier Publishing on a national open science partnership. The partnership includes open access publishing and reading services for Elsevier journals and open science services for disseminating and…

LIACS prof. Grzegorz Rozenberg is one of the world leaders in research on Theoretical Computer Science and Natural Computing. He is often called the guru of Natural Computing.

LIACS prof. Grzegorz Rozenberg is one of the world leaders in research on Theoretical Computer Science and Natural Computing. He is often called the guru of Natural Computing.

In the early modern period women played a prominent role in crime. At times they even made up half of all defendants. Female criminality was a typically urban phenomenon. Why do we find so many women before the Dutch criminal courts?

An overview of awards and prizes granted to our staff and students in 2018, as well as special appointments and royal distinctions.

Leiden has the most highly regarded China Studies programme in Europe. But how did this knowledge find its way specifically to Leiden? For his PhD research Koos Kuiper delved into the unique history of the start of this unique programme.

How were war heroes and war criminals created, and how do these images relate to the historical context?

The Dutch universities will give Open Access an extra boost from 2019 by starting a pilot titled ‘You share, we take care’ to make publications available after six months in collaboration with researchers.

As a result of the refugee crisis and the terrorist attacks in Paris and Brussels, the Royal Netherlands Marechaussee (RNM) is stepping up immigration controls in the Dutch borderlands. These measures are part of the so-called Mobile Security Monitor (in Dutch: Mobiel Toezicht Veiligheid), “Schengen…

On 1 February 2017 there was a hearing in the committee on European affairs of the second chamber of the Dutch Parliament on the issue of

eLaw in collaboration with the TU Delft Design for Values Institute finalized the research on “Artificial Intelligence and Ethics at the Dutch Police” by providing the whitepaper highlighting requirements for the responsible use of AI at the Police and the long-term research strategy.

On 11 November 2016, The Hague Law Labs and the department of Constitutional and Administrative Law, in collaboration with the Italian Association for European and Comparative Law, will organise ‘The Dutch Constitution Beyond 200: tradition and innovation in a multilevel legal order'.

An overview of awards and prizes granted to our staff and students in 2021, as well as special appointments at Leiden University and other institutions.