Clinical Research Directory

Inclusion criteria: 1. 13-16 years 2. a diagnosis of ADHD 3. parents are willing to participate in answering questionnaires pre, during, post and follow-up 4. stable medication during the study period 5. participant and parents can read, write and speak Norwegian 6. access to mobile phone and internet. Exclusion criteria: 1. Other primary diagnosis than ADHD (e.g. Autism, intellectual disabilities, severe conduct disorder) 2. clinically significant comorbid psychiatric disorder requiring treatment (e.g. major depression, severe anxiety, suicidal ideation, eating disorder) 3. follows another psychological treatment or intend to start treatment during the intervention period 4. do not follow a regular school plan (e.g. frequently with days away from school/class with different educational content than their peers).