Replications of previous scientific work are essential to accumulate knowledge and accelerate scientific progress. Despite their relevance, replication studies are under-used and undercited, leading to a biased view of the literature. To facilitate the uptake of replication studies and their wider use in research, education, and policy, we propose to (1) develop and maintain a comprehensive database cataloguing replication efforts by crowdsourcing contributions; (2) develop two interactive online apps for finding, exploring and visualising replications allowing for field-specific metascientific analyses; (3) conduct outreach activities to teach how to best engage with our developed resources.

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Socioeconomic inequalities in health represent a major scientific and societal challenge. In the Netherlands, low socioeconomic groups die on average five years earlier, and live fourteen more years with diseases and disabilities, than high socioeconomic groups. Also, unhealthy behaviours (like smoking) are more prevalent among low socioeconomic groups. Social causation frameworks explain these inequalities by a higher exposure of low socioeconomic groups to various challenging environmental conditions (e.g. financial problems, stress). Due to a lack of data, most studies took a linear instead of dynamic approach to explain health inequalities, i.e. neglecting interlinkages between multiple environmental conditions, changes in these conditions over time, and interactions with individual factors. This may have led to an underestimation of the importance of certain factors for health inequalities (e.g. environmental conditions) and, in turn, to ineffective interventions (e.g. targeting health-behaviours of low socioeconomic groups without improving related environmental conditions). My overall aim is to understand how multiple, time-varying, interlinked environmental conditions, in interaction with individual factors, contribute to socioeconomic inequalities in health and health-behaviours, by applying an interdisciplinary systems approach, including: 1) Delphi study to advance the operationalisation of SEP; and qualitative interviews to understand socioeconomic differences in the conceptualisation and prioritization of health, and how this relates to challenging environmental conditions; 2) Longitudinal analyses to investigate relations between (changes in) SEP, environmental conditions, individual factors, health-behaviours and health over time; 3) Experiment to explore socioeconomic differences in (ir)rational behavioural responses; 4) Agent-based modelling, as this innovative technique is able to capture the dynamics underlying health inequalities in a simulation model. Steps 1-3 deliver crucial information to develop an advanced model to calculate the potential impact of policies on health inequalities. My research program advances scientific knowledge and delivers decisive information to policymakers to maximise the health potential of low socioeconomic groups

Despite the tight labor market, many people with autism are unemployed. In collaboration with autistic people, employers, organisations, insurers, company doctors, trade unions and scientists we investigate what people with autism need to attain suitable sustained employment, what are success factors, what approaches exist and how they can be used more and better nationally.

This project delves into why, despite growing acceptance, LGBTQ+ youth still face poorer wellbeing in Europe. Researchers will investigate if laws and policies have reduced bullying and discrimination against LGBTQ+ youth. They will also analyse videos on YouTube and TikTok to understand how LGBTQ+ youth experience stigma and identity online. Additionally, researchers will launch the first long-term study of LGBTQ+ youth in the Netherlands, gathering daily feedback on their identity development and experiences with discrimination. By combining these approaches, the project aims to shed light on the factors influencing LGBTQ+ youth wellbeing.