This dissertation investigates the impressive prehistoric cultivated landscape of the eastern part of West Frisia.

National parochialism is the tendency to cooperate more with ingroup than outgroup members. Angelo Romano, Matthias Sutter, James Liu, Toshio Yamagishi & Daniel Balliet studied national parochialism across different nations and conclude in their publication in Nature Communications that it is a ubiquitous…

Why do some parties fail to settle conflict, even after long periods of fighting? ISGA PhD candidate Valerie Sticher suggests that costly concessions often stand in the way of a negotiated agreement. Conflict party members not only care about their in-group's welfare, but also want to avoid rewarding…

Registration for the Co-Align 2023 conference is open!

Jaroslaw Kantorowicz, assistant professor at the Institute of Security and Global Affairs, is a co-author of this publication that explores the nature of the ideological bias in a constitutionally relevant decision.

In this paper for Defence Strategic Communications, Alastair Reed and Jennifer Dowling seek to show the importance of historical narratives to propaganda by identifying and exploring five ways in which such narratives are exploited to reinforce the extremists' 'competitive system of meaning'.

Here I propose to study the relationship between autonomic pupil-synchronisation and trust, at the behavioural and neural level, and examine a targeted set of possible contextual moderators.

The aim of this project is the linguistic documentation of Bakola, a Narrow Bantu language.

Noah Millman defended his thesis on 26 May 2015

A new paper written by Jolien van Breen, Soledad de Lemus, Russell Spears & Toon Kuppens in the British Journal of Social Pscychology examines the impact of the 2008-2012 financial crisis on national identity in Spain.

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…

This study investigates the perception and production of emotional prosody by native and non-native listeners and speakers, i.e. Chinese and Dutch listeners and speakers, including Dutch L2 learners of Chinese.

Ömer Gürlesin defended his thesis on 28 November 2018

People are more likely to cooperate with their compatriots than with people from other countries. This tendency can frustrate collaborative projects, such as cross-border cooperation for the provision of public goods. This is the conclusion of Leiden social psychologist Angelo Romano.

How do inclusion and exclusion affect people?

One of the recurring points of discussion within the Criminal Justice research program is the question of which behaviors should and should not fall within the scope of criminal law. This question is examined from a legal- dogmatic and social-scientific perspective.