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.

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).

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

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…

The Leiden faculty has a lively tradition in the field of criminal truth finding and evidence.

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.

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 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.

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…

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.

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.

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.

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

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…

In this policy brief, Dennis Broeders, Els De Busser and Patryk Pawlak discuss attribution of in cyberspace from three different perspectives: criminal law, international law and policy. Published together with EU Cyber Direct.

Money laundering, fraud, DNA testing: current affairs is key in this master’s programme. 'Forensische Criminologie' provides specialist expertise related to the criminal justice system - from forensic psychiatry to criminalistics.

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

European policy affects our lives: from air quality to the frequency of a bus service. Leiden researchers analyse how the European Union functions, how countries apply European policy and whether this policy actually provides solutions and delivers.

This research paper was requested by the European Parliament's Committee on Civil Liberties, Justice and Home Affairs. It was published by the International Centre for Counter-Terrorism (ICCT) in The Hague. Leiden University is one of the participating institutes in this publication and our researcher…

This dissertation takes an important step in understanding the phenomenon of non-take-up of social support and what it means for contemporary social policies.

The decades around 1800 constitute the seminal period of European nationalism. The lin­guistic corollary of this was the rise of standard language ideology, from Finland to Spain, and from Iceland to the Habsburg Empire. Amidst these international events, the case of Dutch in the Netherlands offers…

On July 5th, Mulugeta Tarekegne Tsegaye succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Mulugeta on this great result.

From March 2023, political scientist Katharina Natter (Leiden University) will lead part of an ambitious project called PACES, funded by Horizon Europe and coordinated by Simona Vezzoli (ISS). PACES is an innovative, inter-disciplinary and multi-level research project that offers a groundbreaking approach…

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…

The policies relating to language pursued by European monarchies and states have been widely studied, but far less attention has been given to their linguistic and cultural policies in territories outside their own borders.

EU foreign policy has become increasingly politicised over the past years, amongst others as a consequence of the succession of crises. Crises may engender processes of crisis framing and contestation. This article focuses on how the policy demands being voiced in these processes of contestation are…

Think tanks have proliferated in most Western democracies over the past three decades and are often considered to be increasingly important actors in public policy. Still, their precise contribution to public policy remains contested.

Governments are increasingly facilitating the roll-out of so-called “smart meters”, a technology for measuring energy consumption that are able to transmit and receive data using a form of electronic communication. However, implementation has been slow or even stalled.

Leiden experts research ways in which European legislation is converted into national legislation. Knowing how this process works can inspire policy-makers trying to achieve their aims while abiding to Europan legislation.

As part of the Paris Agreement, countries across the world agreed to support developing countries to invest in climate mitigation and adaptation through a Green Climate Fund. However, developed countries have failed to meet funding commitments for the Green Climate Fund–the flagship program financing…

The relationship between academia and democracy is a complicated one. Should policy makers listen to scientists or to citizens? That is the dilemma Valérie Pattyn and Johan Christensen will discuss with a panel of experts during the academic conference EuroScience Open Forum (ESOF).

Basketry, cordage and textiles made of plant fibers or bark are rarely preserved in the archaeological record. By means of experimental archaeology and microwear analysis, we obtain indirect evidence about this important craft.

Kohei Suzuki is Assistant Professor at Institute of Public Administration. This study carries several important implications for understanding the policy impacts of a graying population and for studies of the welfare state, in general.

In this article, Martin Sievert and Jonas Bruder investigated whether and how administrative burdens influences citizens' perceptions of welfare policies and attitudes towards beneficiaries.

Many of the big challenges of the 21st century (climate change, international migration, financial instability, socio-economic inequality) find their origins in the organisation of the global economy. Any solution to the world’s big challenges therefore requires forceful policy interventions at the…

Following the terrorist attacks in Paris (November 2015) and Brussels (March 2016), Belgium’s counterterrorism policy has been heavily criticized – domestically and worldwide.

On May 30th, Yang Yang succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Yang on this great result.

This book compares the policies of Australia and Italy towards boat people who have arrived in the two countries since the early 1990s.

The RIPEET project will support Responsible, Research and Innovation (RRI) policy experimentations for energy transition in three European territories - in Extremadura (ES), Highlands and Islands of Scotland (UK) and Ostrobothnia (FI). The framework conditions, processes, and outcomes of these experiments…

How can we promote social cohesion in a society that is culturally and religiously diverse?