Training Community Therapists to Deliver an Individualized Mental Health Intervention for Autism Spectrum Disorder: Changes in Caregiver Outcomes and Mediating Role on Child Outcomes

Objective: This study examines the impact of training therapists to deliver "An Individualized Mental Health Intervention for Autism Spectrum Disorder (ASD)" (AIM HI) for children with autism spectrum disorder on caregiver outcomes and the mediating role of changes in caregiver outcomes on child outcomes. Method: Data were drawn from a cluster randomized trial conducted in 29 publicly funded mental health programs randomized to receive AIM HI training or usual care. Therapists were recruited from enrolled programs and child/caregiver participants enrolled from therapists' caseloads. Participants included 202 caregivers of children 5 to 13 years of age with autism spectrum disorder. Caregiver strain and sense of competence were assessed at baseline and 6 month postbaseline. Child behaviors were assessed at baseline and 6, 12, and 18 months postbaseline. Therapist delivery of evidencebased intervention strategies were assessed between baseline and 6 months. Results: A significant training effect was observed for caregiver sense of competence, with AIM HI caregivers reporting significantly greater improvement relative to usual care. There was no significant training effect for caregiver strain. Observer-rated therapist delivery of evidence-based interventions strategies over 6 months mediated training effects for sense of competence at 6 months. Changes in sense of competence from baseline to 6 months was associated with reduced child challenging behaviors at 6 months and mediated child outcomes at 12 and 18 months. Conclusion: Combined with research demonstrating effectiveness of therapist AIM HI training on child outcomes, this study provides further evidence of the positive impact of training community therapists in the AIM HI intervention.