CAPE utilizes data from the TRacking Adolescents’ Individual Lives Survey (TRAILS). In TRAILS a large group of young people in the north of the Netherlands has completed a lot of questionnaires and tests every 2-3 years since they were 11 years old. They are now in their late twenties and some have their own children. The intergenerational spin-off study TRAILS NEXT follows those families. In CAPE, we study the first steps of young children into the social world and explore the role of their parents therein.