One of Equal-Life’s main goals is to develop a toolbox to help stakeholders understand the project results, the underlying data, and support estimating in future how early exposures to physical and social conditions  affect the child development and mental health. Recommendations on   policy and interventions will also be part of the toolbox.  To support the use of the toolbox, a handbook is developed to guide the user through the project results and recommendations. Together, this will provide a basis for new policies in the domain of physical and social environment to positively – rather than negatively – impact the cognitive development and mental health of children later in life.