The questionnaire was sent home with children in the 4 th to 7 th grades in four schools in Reykjavík, Kópavogur and Hafnarfjörður, along with the ADHD rating list.
Listinn var sendur heim með börnum í 4. til 7. bekk í fjórum grunnskólum á höfuðborgarsvæðinu ásamt Ofvirknikvarðanum.