A Person-Centered Approach in Investigating a Mindfulness-Based Program for Adolescents with Autism Spectrum Disorder

Adolescents with autism often experience comorbid internalizing disorders such as anxiety disorders or depression but the available evidence-based treatments to support the mental health of adolescents with autism are limited. The aim of this study was to investigate if and how MYmind, a mindfulness-based program (MBP) for youth with autism, could benefit adolescents with comorbid internalizing disorder(s). A person-centered approach with a multiple baseline design was used to investigate the effects of MYmind. Five adolescents with autism and an internalizing disorder took part in the 9-week MYmind program. The adolescents and their parents completed a daily questionnaire on their personal goals during a baseline phase, the intervention, a 2-month follow-up phase, and a 1-year follow-up phase. We analyzed the effects on their personal goals using visual inspection and statistical analysis for single-case designs. Also, we investigated potential processes of change by analyzing how changes were related over time. Findings indicated that most, but not all, adolescents benefitted from the MBP. Four out of five adolescents showed medium-sized improvement in some of their personal goals. However, one adolescent reported a deterioration during the intervention and 2-month follow-up phase. Decreased worry preceded behavioral improvements in two adolescents, whereas other potential mechanisms of change showed inconclusive results. The findings indicated that most of the adolescents with autism and a comorbid internalizing disorder partially benefitted from the MBP.