Evidence-informed policy-making is crucial for good governance. Yet, despite the abundance of evidence from research and evaluation available to decision-makers, we know little about the actual influence of evidence on government policies. The ‘Power of Evidence’ (PoE) research programme, directed by…

On 28 February 2019, Kabir Duggal defended his thesis 'Principles of Evidence in Investor-State Arbitration, Burden, Standards, Presumptions & Inferences'. The doctoral research was supervised by Prof. dr. E. De Brabandere.

In this article, Kuipers and Timmermans analyze the first lady's relationship with policy problems in the period 1945-2013.

The unit residue group, to which the present thesis is devoted, is defined using the norm-residue symbol, which Hilbert introduced into algebraic number theory in 1897.

This project maps the policy of ‘Paz Total’ (Total Peace) and ongoing peace negotiations between non-state armed groups and the government of Colombia under the presidency of Gustavo Petro (2022-2026).

Madeleine Hosli, Professor of International Relations at Leiden University, together with two other authors, wrote a chapter in Group Politics in UN Multilateralism. This chapter assesses the composition and functioning of the African Union (AU) within the United Nations.

Madeleine O. Hosli, Professor of International Relations, wrote this book in which she analyses the complex relations between the European Union (EU) as a regional organization and the United Nations (UN) as an international, global governance institution.

The main aim of this project is to reveal and unravel the invisible histories of the UN, transcending the dominant Western perspective to recover the historical agency of Global South actors. The research will investigate how the UN has both facilitated and limited their role in shaping global order…

The Summer School ‘The European Union, the United Nations and Global Governance’ will focus on a range of topics relevant to interactions between the European Union (EU) and the United Nations (UN) and the EU’s role within current patterns of global governance.

The lipid matrix of the skin's stratum corneum plays a key role in the barrier function, which protects the body from desiccation. The lipids that make up this matrix consist of ceramides, cholesterol, and free fatty acids, and can form two coexisting crystalline lamellar phases: the long periodicity…

Leiden Law School has a strong tradition of research in the field of fact-finding and evidence in criminal cases.

This commentary on the United Nations Convention Against Corruption discusses each provision of the treaty, traces the provisions’ drafting history, and explores their implementation in domestic legal systems.

Governments and public sector organisations consider evidence-based or evidence-informed policymaking as one of the pillars of good governance. That is to say: policies that are informed by scientific knowledge, expertise and evidence. In the research programme 'Power of Evidence', Valérie Pattyn and…

This book offers a comprehensive analysis of China's global resurgence and its effects on U.S. dominance.

This monograph, written by dr. Dennie Oude Nijhuis and published by Cambridge University Press, discusses the postwar development of the welfare state.

ERC StG SAFE and SOUND has the ambition to connect the policy cycle with data generated in robot testing zones to support evidence-based policymaking for robot technologies.

This new article by Monica Kaminska is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

What is the effectiveness of (booklet or online) self-help programmes for people with somatic stressors and depressive symptoms? What works best for whom? How to improve motivation and adherence?

In 2015 the division ‘Migration and Crime’ of the Dutch Society for Criminology has been established to bring together academic researchers that are active in this diverse field with each other and relevant persons and organisations. On March 10 it will organise its first seminar on labour exploitation,…

The main object of study in this thesis is an Arakelov inequalitywhich bounds the degree of an invertible subsheaf of the direct image ofthe pluricanonical relative sheaf of a semistable family of curves.

The book reinterprets the role of the UN during the Congo crisis from 1960 to 1964, presenting a multidimensional view of the organisation.

On 3 December 2019, Meda Couzens defended her thesis 'The application of the United Nations Convention on the Rights of the Child by national courts'. The doctoral research was supervised by Prof. T. Liefaard and Prof. J.J. Sloth-Nielsen.

Does foreign aid promote human rights?

On 18 September 2019, Huw Llewellyn defended his thesis 'An Institutional Perspective on the United Nations Criminal Tribunals: Governance, Independence and Impartiality'. The doctoral research was supervised by Prof. N.M. Blokker and Prof. L.J. van den Herik.

The project ‘Founding an Inclusive Space’ investigates the histories of various LGBT+ archives in the Netherlands, Germany and the United Kingdom.

Lecture, CHiLL series

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.

The book 'The United Nations Convention on the Rights of the Child' is the result of the international academic conference – ’25 Years CRC’ – which was held in November 2014 in Leiden on the occasion of the 25th birthday of the UN Convention on the Rights of the Child.

In order to analyze the challenges linked to data use in the context of nexus governance, Giest & Mukherjee use a policy design lens and more specifically the perspective of organizational policy instruments to look at the Mediterranean region.

An international comparative study of the Netherlands, Belgium, Denmark, France, Germany, the United Kingdom and the United States.

How can we understand the implementation of EU policy and what challenges are involved?

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

Madeleine O. Hosli & Jaroslaw Kantorowicz analyze EU states' foreign policy divergence at the UN General Debate, assessing if Lisbon Treaty reforms increased EU cohesion or if states maintain distinct positions.

This article studies the securitization of immigration in the United States of America (U.S.), through the analysis of the National Security Strategies (NSS) published between 2002 and 2017, using a two-layered analytical framework that combines securitization theory and agenda setting theory.

A thorough description of the relationships among languages and their social environment in a given context, reflecting an ecological perspective, involves attention to the agency of local actors, and the policies, discourse, and ideologies that surround them.

This is an Erasmus+ International Credit Mobility project of Leiden University Medical Center with Boston Children’s Hospital in the USA.

Valentina Carraro gave a presentation titled "Strengthening the Human Rights Council and the UN Treaty Body System" at the 'Reinvigorating the United Nations' Conference organized by the Diplomatic Academy in Vienna on January 27th and 28th. During the conference Valentina presented her research on…

Develop a tool to assess land tenure, access to land and, and land tenure conflict in Timor-Leste

This book offers a concise and accessible introduction to debates about expertise, policy-making and democracy. It uniquely combines an overview of recent research on the policy role of experts with discussions in political philosophy and the philosophy of expertise.

The debate in Europe about digital sovereignty, technological sovereignty, data sovereignty and strategic autonomy has been building over recent years at both the EU level and the level of individual Member States. The different concepts – and their diverse interpretations – cover the sovereignty concerns…

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.

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.

This dissertation provides an account of polar questions in Italian dialects from a typological, theoretical and empirical perspective.

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.

Assessment of teaching is currently becoming more and more common practice. As such assessment is generally based on complex, qualitative data from multiple sources (e.g., lesson plans, video-taped lessons, written reflections of the teacher on his or her performance), the overall quality of the assessment…

How do crises produce changes in specific European Union foreign policy areas, and how should we conceptualise these policy changes?

INFLUEX examines the influence of experts on public policy, aiming to define, measure, and explain their role in democratic policymaking