154 results match your criteria: "Leiden University College[Affiliation]"

Student-teacher gender congruence is suggested to be related to increased student performance, but little is known about the contexts in which these effects occur. Based on literature on gender stereotypes this study hypothesizes different effects of student-teacher gender congruence for male and female students across school subjects and in different educational contexts. Using administrative data of secondary schools in The Netherlands ( > 50,000), this study examined to what extent student-teacher gender congruence is associated with male and female students' performance in the subjects math, physics, Dutch language, and French language.

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Decades of empirical ecological research have focused on understanding ecological dynamics at local scales. Remote sensing products can help to scale-up ecological understanding to support management actions that need to be implemented across large spatial extents. This new avenue for remote sensing applications requires careful consideration of sources of potential bias that can lead to spurious causal relationships.

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Mediating immediacy in the era of 'treat all': The (chrono)logics of HIV treatment initiation in Shinyanga, Tanzania.

Soc Sci Med

October 2023

Amsterdam Institute of Global Health and Development, Paasheuvelweg 25, 1105 BP, Amsterdam, the Netherlands; Leiden University College, Faculty of Governance and Global Affairs, Leiden University, Anna van Buerenplein 301, 2595 DG, Den Haag, the Netherlands. Electronic address:

Purpose: Immediate initiation of antiretroviral treatment following HIV infection is a cornerstone of the current HIV 'universal test and treat' approach. Delayed progress along the HIV care continuum is thus framed as a major stumbling block in effective HIV epidemic control. Through examining the HIV care trajectories of people diagnosed with HIV in Shinyanga Region, Tanzania, we offer a critical interrogation of the HIV care continuum.

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Robust advancements in clinical treatment of people living with HIV (PLHIV) have resulted in the current "treatment as prevention" strategy: the inability to transmit the virus when it is undetectable. Nevertheless, disclosure within marital relationships remains important to adhere optimally to treatment and further limit transmission in the era of treat-all. Disclosure, however, can have serious social repercussions, particularly for women.

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An uncertain recovery: The physical toll of COVID-19 infection on liberal arts and sciences students in the Netherlands.

Glob Public Health

January 2024

Leiden University College, Faculty of Governance and Global Affairs, Leiden University, The Hague, The Netherlands.

This study examines the recovery experiences of students at a university college in the Netherlands during an outbreak of COVID-19 in the spring of 2022. University policy was based on the conception of COVID-19 as short-term, with a defined recovery timeline. Despite perceptions that young people face lower risks for prolonged recovery, our study reveals a different reality.

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The aim of this study is twofold: i) to determine innovative yet sensitive endpoints for sulfoxaflor and ii) to develop best practices for innovative teaching in ecotoxicology. To this end, a group of 52 MSc students participated in an environmental hackathon, during which they did creative toxicity testing on 5 freshwater invertebrate species: Daphnia magna, Chironomus riparius, Asellus aquaticus, Lymnaea stagnalis, and Anisus vortex. Involving the students in an active learning environment stimulated increased creativity and productivity.

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Color-evasiveness and white normativity: Examples set by parents in parent-child interactions in the Netherlands.

Cultur Divers Ethnic Minor Psychol

February 2024

Faculty of Governance and Global Affairs, Leiden University College, Leiden University.

Objectives: Parents can set examples of social norms about ethnic diversity and interethnic relations in interaction with their children. The present study examined whether and how parents set norms of color-evasiveness and White normativity when playing a social categorization game with their children.

Method: In a sample of 141 White Dutch, 73 Turkish-Dutch, and 56 Black Dutch mothers of a 6- to 10-year-old child, behaviors reflecting color-evasiveness (avoiding skin color questions, asking about skin color late in the game, taking relatively long to formulate skin color questions) and White normativity (bias in ethnic-racial focus used) were observed.

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Recent advances in knowledge suggest that micro- and nanoplastics pose a threat to plant health, however, the responses of plants to this stressor are not well-known. Here we examined the response of plant cell defence mechanisms to nanoparticles of commonly used plastic, polystyrene. We used plant cell cultures of widely cultivated plants, the monocots wheat and barley (Triticum aestivum L.

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Species-dependent responses of crop plants to polystyrene microplastics.

Environ Pollut

October 2023

Institute of Environmental Sciences, Leiden University, P.O. Box 9518, 2300, RA Leiden, the Netherlands; Leiden University College, Leiden University, P.O. Box 13228, 2501 EE, The Hague, the Netherlands. Electronic address:

Only recently there has been a strong focus on the impacts of microplastics on terrestrial crop plants. This study aims to examine and compare the effects of microplastics on two monocotyledonous (barley, Hordeum vulgare and wheat, Triticum aestivum), and two dicotyledonous (carrot, Daucus carota and lettuce, Lactuca sativa) plant species through two complimentary experiments. First, we investigated the effects of low, medium, and high (10, 10, 10 particles per mL) concentrations of 500 nm polystyrene microplastics (PS-MPs) on seed germination and early development.

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Omega squared (ω^2) is a measure of effect size for analysis of variance (ANOVA) designs. It is less biased than eta squared, but reported less often. This is in part due to lack of clear guidance on how to calculate it.

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This study examined whether fathers' and mothers' sensitivity toward sons and daughters varies depending on whether they play with stereotypical girls' toys or boys' toys. In a sample of 144 predominantly White Dutch families with a child aged 4-6 years, fathers' and mothers' sensitivity was observed during two free play episodes while they played with their son or daughter. One play episode was with stereotypical boys' toys, and the other was with stereotypical girls' toys.

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Herein, we investigated to which extent metallic nanoparticles (MNPs) affect the trophic transfer of other coexisting MNPs from lettuce to terrestrial snails and the associated tissue-specific distribution using toxicokinetic (TK) modeling and single-particle inductively coupled plasma mass spectrometry. During a period of 22 days, snails were fed with lettuce leaves that were root exposed to AgNO (0.05 mg/L), AgNPs (0.

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Nano- and microplastics commonly cause adverse impacts on plants at environmentally relevant levels: A systematic review.

Sci Total Environ

April 2023

Institute of Environmental Sciences, Leiden University, P.O. Box 9518, 2300 RA Leiden, the Netherlands; Leiden University College, Leiden University, P.O. Box 13228, 2501 EE The Hague, the Netherlands. Electronic address:

Over the last years there has been significant research on the presence and effects of plastics in terrestrial systems. Here we summarize current research findings on the effects of nano- and microplastics (NMPs) on terrestrial plants, with the aim to determine patterns of response and sensitive endpoints. We conducted a systematic review (based on 78 studies) on the effects of NMPs on germination, plant growth and biochemical biomarkers.

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Priming attachment and diversity ideologies: Effects on ethnic bias in children's altruistic sharing in a dictator game.

Acta Psychol (Amst)

October 2022

Leiden University College, Faculty of Governance and Global Affairs, Leiden University, Turfmarkt 99, 2511DP The Hague, the Netherlands; Institute of Education and Child Studies, Faculty of Social and Behavioural Sciences, Leiden University, Wassenaarseweg 52, 2333AK Leiden, the Netherlands.

Children often show a positive ingroup bias in altruistic behaviors such as sharing. Insight in factors related to ethnic bias in sharing can help towards understanding the origins of inequality in the distribution of resources in society. The present study examined the effect of priming secure attachment (versus positive affect) and multiculturalism (versus color-evasiveness) on ingroup bias in dominant ethnic group children's altruistic sharing.

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2·6 billion people rely on solid fuels for cooking or heating. Accelerating access to cleaner solutions is crucial to reduce the negative effects of solid fuel use. Despite abundant evidence on how to implement these solutions, previous attempts have been disappointing.

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Lower socioeconomic status has been associated with higher colorectal cancer incidence and lower participation in population-based screening with faecal immunochemical testing (FIT) but regional variations in participation may also exist. We analysed differences in participation and yield in colorectal cancer screening by urban density level. Data of all invitees to the Dutch colorectal cancer screening programme in 2014-2015 were included.

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Predicted microplastic uptake through trophic transfer by the short-beaked common dolphin (Delphinus delphis) and common bottlenose dolphin (Tursiops truncatus) in the Northeast Atlantic Ocean and Mediterranean Sea.

Mar Pollut Bull

July 2022

Leiden University College, Leiden University, P.O. Box 13228, 2501 EE The Hague, the Netherlands; Institute of Environmental Sciences, Leiden University, P.O Box 9518, 2300 RA Leiden, the Netherlands. Electronic address:

Marine mammals can serve as an indicator of ecosystem health, and are likely exposed to significant amounts of microplastics (MPs). In this study we estimated the MP uptake of two odontocetes, the short-beaked common dolphin (Delphinus delphis) and the common bottlenose dolphin (Tursiops truncatus), in the Mediterranean Sea and the Northeast Atlantic. These two species are expected to primarily ingest MPs through trophic transfer.

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A prerequisite to anti-racist socialization in families is acknowledging ethnic-racial (power) differences, also known as color-consciousness. In a sample of 138 White Dutch families from the urban Western region of the Netherlands with children aged 6-10 years (53% girls), observations and questionnaires on maternal color-consciousness and measures of children's attitudes toward Black and Middle-Eastern ethnic-racial outgroups were collected in 2018-2019. Variable-centered analyses showed that maternal color-conscious socialization practices were related to less negative child outgroup attitudes only.

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Global Human Consumption Threatens Key Biodiversity Areas.

Environ Sci Technol

June 2022

Institute of Environmental Sciences (CML), Leiden University, 2333 CC Leiden, the Netherlands.

Key biodiversity areas (KBAs) are critical regions for preserving global biodiversity. KBAs are identified by their importance to biodiversity rather than their legal status. As such, KBAs are often under pressure from human activities.

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Background: Obesity is a growing epidemic among university students, and the high levels of stress reported by this population could contribute to this issue. Singular relationships between perceived stress; engagement in restrained, uncontrolled, and emotional eating; sleep; dietary risk; and body mass index (BMI) have been reported in the current body of literature; however, these constructs interact with each other, and the complex relationships among them are infrequently examined. Therefore, the aim of the present study was to explore the complex relationships between these constructs using mediation and moderation analyses stratified by gender.

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Biodiversity Loss from Freshwater Use for China's Electricity Generation.

Environ Sci Technol

March 2022

Institute of Environmental Sciences (CML), Leiden University, 2333 CC Leiden, The Netherlands.

Electricity generation has two major, under-investigated impacts on freshwater biodiversity due to its water use: the consumption of freshwater and thermal emissions to freshwater. Here, we analyze the spatiotemporal freshwater biodiversity impacts of China's electric power system and the driving factors for these impacts. We show that between 2008 and 2017, the freshwater consumption of electricity generation peaked in 2013 (13.

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A dietary shift from animal-based foods to plant-based foods in high-income nations could reduce greenhouse gas emissions from direct agricultural production and increase carbon sequestration if resulting spared land was restored to its antecedent natural vegetation. We estimate this double effect by simulating the adoption of the EAT-Lancet planetary health diet by 54 high-income nations representing 68% of global gross domestic product and 17% of population. Our results show that such dietary change could reduce annual agricultural production emissions of high-income nations' diets by 61% while sequestering as much as 98.

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Trophic Transfer and Toxicity of (Mixtures of) Ag and TiO Nanoparticles in the Lettuce-Terrestrial Snail Food Chain.

Environ Sci Technol

December 2021

Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA Leiden, The Netherlands.

Article Synopsis
  • Research shows that silver nanoparticles (AgNPs) and titanium dioxide nanoparticles (TiONPs) can transfer from lettuce to snails, indicating their accumulation in soil could impact food chains.
  • Trophic transfer factors reveal AgNPs have a lower concentration in snails compared to TiONPs, with most Ag excreted as waste, while Ti is mostly stored in the snail's digestive gland.
  • Combining AgNPs and TiONPs in treatments worsens the negative effects on snail growth and activity compared to using either nanoparticle alone, raising concerns about their impact on higher trophic levels and ecosystem health.
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