Participants and Procedure
DSM-5, ADHD
Our sample consisted of six parents and their children with ADHD who were all being treated at an outpatient mental health clinic in the Netherlands. They were recruited between September 2018 and December 2019. Parents of children who deemed eligible received an information letter by the clinician, including the research aims and the study-procedure. If parents expressed interest in participating in the study, they received a phone call from the research team, in which more extensive explanation about the study and procedures was provided. After signing informed consent, parents and children were screened for eligibility. Inclusion criteria for the children were (a) being 4 to 12 years old; (b) having a DSM-5 based diagnosis of ADHD (confirmed with the Diagnostic Interview Schedule for Children-IV, parent interview, adapted to the DSM-5 (DISC-IV; 