School‐based targeted prevention for children with mild intellectual disabilities or borderline intellectual functioning and behaviour problems: A pilot implementation study.

Background: We examined the implementation and potential effectiveness of a school‐based targeted prevention programme addressing behaviour problems, adapted for children with mild intellectual disabilities or borderline intellectual functioning. Method: Thirteen children participated. The intervention was implemented in schools. We examined intervention dosage, reach, responsiveness, satisfaction, and comprehension, using questionnaires completed by children and trainers. We assessed child‐ and teacher‐reported behaviour problems before and after the intervention. Results: Trainers selected both children who did and did not meet the intervention eligibility criteria, suggesting problems in intervention reach. Intervention dosage, responsiveness, satisfaction, and comprehension were satisfactory. There were group‐level behaviour problem decreases (i.e., Cohen's d). Individual‐level behaviour problem changes (i.e., Reliable Change Indices) showed large heterogeneity and little reliable change. Conclusions: The results provide initial evidence that the intervention has potential for successful implementation in schools, but the current evidence for intervention effectiveness is inconclusive. [ABSTRACT FROM AUTHOR]