The main objective of WP1 is to develop conceptual models of the mechanisms of how the physical and social environment impact the mental health and cognitive development in children and young adults aged 0 to 21 years.

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The aim is to investigate if and how the child’s external environment, such as air pollution, noise, restorative properties and their social environment, such as neighbourhood, family and socio-economic positions  affect the cognitive and mental development of children and young adults. We also want to find out whether there are critical periods in the life course perspective, including the prenatal period, when such exposures have a higher risk of adverse effect.

To this end, a literature review is carried out of the current evidence on the relationships between these exposures, cognitive development and mental health. The probable mechanisms such as stress, sleep, and self-regulation and coping will be specifically studied.

The aim of WP1 is to develop conceptual models of how these mechanisms may affect the links between exposome and children´s cognition, emotions, behaviours and mental health in different developmental phases. Available data in the project’s existing cohorts and school studies will be used. When  information on key mechanisms is missing or incomplete, detailed studies among the different age groups are planned. We anticipate that these studies will address the restorative function of sleep among young adults in connection to mental health, as well as the importance of the daily living environment in preschool/school and cognitive functions among younger children.