This study evaluates the effectiveness of occupational therapy using Ayres Sensory Integration® (ASI) in preschool children with autism spectrum disorder (ASD). The aim is to determine whether ASI, when added to usual individualized education program (IEP)-based education, improves adaptive functioning, goal attainment, and sensory processing. Children aged 48 to 59 months with a diagnosis of ASD were recruited from a pediatric rehabilitation center in Istanbul, Türkiye. Participants were randomly assigned to either an intervention group receiving ASI in addition to usual care or a control group receiving usual care only. The intervention lasted 12 weeks. Outcomes were assessed before and after the intervention using standardized measures including the Vineland Adaptive Behavior Scales-Second Edition (VABS-II), Goal Attainment Scaling (GAS), and the Sensory Profile. The study is designed as a single-blind randomized controlled trial, with outcome assessments conducted by individuals who were not involved in the intervention.
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Change in Goal Attainment Scaling (GAS) score
Timeframe: Baseline to 12 weeks