OPT-IN: Online Parent Training Intervention for Young Children Diagnosed With Autism Spectrum Disorder

The goal of this observer-blinded randomized controlled clinical trial is to determine the effectiveness of a fully-online, parent-mediated, video-based, self-directed intervention for young children with autism (12-60 months) who have been diagnosed with autism in the last six months. The main question\[s\] it aims to answer are: 1. Does an online intervention for autistic children result in improved adaptive behaviour, compared to a psychoeducational control group? 2. Does an online intervention for autistic children result in reduced autism symptoms in children, and decreased stress and increased self-efficacy in parents, compared to a psychoeducational control group? 3. What are the predictors of response to intervention (i.e., child sex and age; initial autism symptoms and adaptive behavior; and parent self-efficacy, stress, and education). Parents will be given six compulsory and eight optional online modules that will teach them skills to use while interacting with their autistic children to improve social and communication behaviours and minimize behaviours that interfere with learning. The comparison group will receive six compulsory and eight optional online modules that will teach them about autism more broadly including diagnostic criteria, symptom profiles across development, etc.