People who have taken antibiotics in the past three months pay more attention to negative facial expressions, according to research by postdoc Katerina Johnson and assistant professor Laura Steenbergen. This may explain how antibiotics increase the risk of developing depression.

In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…

Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.

Promotor: J. Schaye

What are the social and neural mechanisms that contribute to fluctuations in self-esteem in healthy adolescents and adolescents with depression?

In what way can teachers support and enlarge student engagement in a blended learning context?

Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.

This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.

Promotor: P.G.L. Klinkhamer, Co-Promotores: K. Vrieling, P.P.J. Mulder

Verbal compounds abound in Hausa (a Chadic language).

Plant-microbe interaction resulted in different physio/chemical responses by host plant and interacting rhizobacteria.

Atherosclerosis is the main underlying pathology of cardiovascular disease. Atherosclerosis is caused by an immune response which is directed against (modified) lipoproteins which accumulate in the vessel wall.

Although there has been an increase in the research into brain function and dysfunction in relation to stress and emotions, there are still many unanswered questions.

Atherosclerosis is a chronic inflammatory disease affecting millions of people world-wide.

Over the last decades, income inequality has increased globally. How do social policies affect this increasing trend? How do international trade and technological progress affect inequality? What is the profile of income inequality in China?

Opportunities, challenges, and future perspectives of people-centered approaches in dynamic historic urban landscapes

How do dissociative states affect the ability to suppress emotional distraction (in the context of a working memory task) in patients with Borderline Personality Disorder?

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

1. How does the social context influence emotion perception? 2. How do attentional control processes influence the unfolding of affective responses?

Research within the centre is broad and pluralistic, ranging from the history of political thought to contemporary analytic and continental political philosophy and critical social theory. Members of the CPP also participate in the Research Profile Area on Political Legitimacy. The Centre is the proud…

Chronic pain, nausea or vomiting due to chemotherapy. If you suffer from such ailments, medicinal cannabis can be a godsend. Though a downside is that it can make patients high. Therefore, Leiden researchers from the Oncode Institute are investigating alternatives that do not make you high. In Nature…

How does having limited access to the social world affect Deaf or Hard of Hearing (DHH) children’s emotional development? And in turn, how do impairments in emotional functioning affect social development and the development of psychopathology?

Globalization, migration, technological innovation and climate change pose challenges to citizens in European countries. These challenges test the limits of cross-national and cross-generational solidarities, touching upon the very foundations of governance and society. This research program aims at…

On behalf of the Dutch astronomical community, we unequivocally condemn the brutal killings of Ahmaud Arbery, George Floyd, and Breonna Taylor and countless others and instances of racism.

Our previous meta-analysis (Swart et al., 2019) had shown that feedback targeting text comprehension given when students perform a reading task positively influences learning from text. So far, differences in the effects of feedback were explained by design features, such as the timing and richness…

On 29 June 2017, Doris Dull-Zessner defended her PhD dissertation “Value Congruence in a Multinational Corporation”. The supervisors are Professor J.A.A. Adriaanse and Professor J.I. van der Rest.

This paper investigates possible convergence of issue salience of terrorism among citizens within the European Union for ten jihadist attacks in the period 2015–2017 using Eurobarometer survey data.

In which way and to which extent is integration articulated in concept maps and which factors affect the resulting concept maps? By which factors is the perceived usefulness of such concept maps affected?

Which traits and/or trade-offs determine benefits of being deciduous or evergreen?

In this study Lilie Roosman describes the effects of prominence and boundary marking on the temporal and melodic structures of two regional languages of Indonesia, viz. Toba Batak, a stress language, and her native language Betawi Malay, a non-stress language.

Promotor: Prof.dr. R.M.H. Merks

Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…

In this study the central question to be answered is whether children are able to participate in decisions and at which moments these decisions are taken in the youth care trajectory.

LCA has become an important method to study environmental impacts of human activities. Still, there are several methodological issues in LCA that can adversely affect the results reliability.

Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.

Research at the department of Environmental Biology

In today's volatile market environments, companies must be able to continuously innovate. In this context, innovation does not only refer to the development of new products or business models but often also affects the entire organization, which has to transform its structures, processes, and ways of…

How to stimulate novel research in science and innovation

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

This project analyses the democratic consequences of increasing decentralization and regionalization in European countries. Through an original approach that foregrounds informal political dynamics, it studies the functioning of democracy in subnational units, and investigates the effects of ever more…

Quantum annealing belongs to a family of quantum optimization algorithms designed to solve combinatorial optimization problems using programmable quantum hardware. In this thesis, various methods are developed and tested to understand how to formulate combinatorial optimization problems for quantum…

Data science offers exciting new instruments for governments to reach out to citizens, for example by using data-driven information channels, providing real-time simulations, or personalizing services based on citizen data. At the same time, the possibilities and use of data science methods can have…

As a result of an increased life expectancy, more people suffer from chronic diseases and discomfort. Elderly patients may have multiple diseases simultaneously, with concomitant multiple medications.

Government impartiality is considered a core feature of quality of government, and one that leads to favorable macro‐level outcomes. We have limited knowledge, however, of how impartiality affects citizens' perceptions of public service quality. In particular, we do not know how the impacts of impartiality…

Our institute aspires to be the center of excellence for strategic and quantitative research and education on sustainable use and governance of natural resources and biodiversity. We have two distinct research programmes: Environmental Biology and Industrial Ecology. The department of Industrial…

Health research, medical practice and consequently the whole population is increasingly affected by digitization, data science and AI.

Dr Christian Junge is the current fellow of the Al-Babtain institute.

Bioactive Molecules is one of the four research themes of the Institute of Biology Leiden.

Recent welfare reforms in the Netherlands show a trend of reducing welfare accessibility and increasing obligations. Although the effects thereof on directly-targeted economic outcomes, such as welfare dependency and labor participation, are often assessed, potential spillovers to other economic and…