Parents are increasingly viewed as key to successful child (semi-) residential treatment. Positive outcomes for both the parents as the child with a psychiatric disorder are more likely to occur... Show moreParents are increasingly viewed as key to successful child (semi-) residential treatment. Positive outcomes for both the parents as the child with a psychiatric disorder are more likely to occur when effective levels of therapeutic alliances exist between team members and parents. Unfortunately, it remains unclear from the literature, how the establishment of the parent-treatment team alliance best contributes to child residential treatment outcome. Therefore, a more systematic approach is needed to help practitioners.The aim of this thesis is threefold: 1. Development of assessment strategies (instruments) of the parent-team alliance, 2. Longitudinal investigation of the relation between parent-team therapeutic alliance and semi-residential treatment outcome factors and 3. Examining the effect of strengthening the parent-team alliance on (semi-) residential treatment outcomes. Routine Outcome Monitoring was implemented at five semi-residential treatment units of Curium-LUMC, a Centre for Child and Adolescent Psychiatry. All newly admitted children and their parents, 46 children (6-12 years old) in total, were included in the ROM assessment. Results showed: 1)Alliance instruments are capable of assessing the parent-team alliance; 2)Parent-team alliance, parental stress and child'symptoms are interconnected, and 3)A structured investment of team members in the parent-team alliance strenghtens this alliance and positively indfluences childs'symptoms. Show less