The control group consists of children and families attending family therapy. Time-limited family therapy (12 to 24 months) is provided via the Hospital District of Southwest Finland/Turku University Hospital's Child Psychiatry clinic (TYKS) and takes place in the town of Turku environs. All data will be collected in Finland and stored at the Research department of the Social Insurance Institution of Finland, located in Helsinki. Study measures will be administered in Finnish only.