Parents Plus parenting programme for parents of adolescents with intellectual disabilities: A cluster randomised controlled trial.

Objective: This study evaluated the effectiveness of the Parents Plus Special Needs (PPSN) programme, a seven-week parenting group intervention for parents of adolescents with intellectual disabilities.

Method: In a cluster randomised controlled trial, 24 intellectual disability services supporting families of adolescents with an intellectual disability were assigned to PPSN (12 services; 141 parents) or waitlist control group (12 services; 136 parents). Primary outcomes were parent-reported parenting practices, family adjustment, problem behaviours, emotional problems, and prosocial behaviours.