During the first six measurement waves of the RADAR project, parents or caregivers of RADAR participants completed annual questionnaires. However, in recent waves, the RADAR questionnaires were only filled in by the young adults themselves, their siblings and, if applicable, their partners. In RADAR G1 we are again focusing on the parents of RADAR participants.

This is because we would like to know how parent(s) are doing now, as well as what the relationship between parents and children looks like in adulthood. As more and more RADAR participants and siblings have children of their own, we are also interested in grandparents' involvement with any grandchildren. We cordially invite all parents of RADAR participants, regardless of whether they have participated in the past and regardless of whether they have grandchildren, to participate in this round of measurement!

The RADAR G1 measurement wave will start in the fall of 2023.