The LAKU family program service is provided in Helsinki, Kotka, Tampere and Oulu environs. The Etä-LAKU intervention program is provided in Lapland and Kainuu/Ylä-Savo environs. Families are admitted to the programs by the child mental health clinics in the respective localities. The control group (treatment as usual) consists of children and families attending the family therapy fund by the Hospital District of Southwest Finland/Turku University Hospital's Child Psychiatry clinic (TYKS) and takes place in the Hospital District of Southwest Finland environs. Potential participants (i.e. the families admitted to the family-based intervention) will receive both oral and written information about the study and an invitation to volunteer. Both parents (when applicable) and child are advised to participate independently. Power analysis is utilized to ensure minimum necessary number of study participants. Anticipated sample sizes are: n=125 (LAKU), n=72 (Etä-LAKU), and n=33 (TAU group).