Impact of indoor environment quality on autistic behaviours in autism schools of Saudi Arabia

Indoor Environmental Quality (IEQ) strongly influences students' learning outcomes, yet its impact on autistic students remains underexplored. This study investigates the relationship between IEQ parameters and behavioural outcomes of 37 autistic students (DSM-5 Levels 1-2) aged 5-12 years attending two autism-specific schools in Saudi Arabia across winter and summer periods. IEQ parameters - temperature, relative humidity, carbon dioxide (CO₂), particulate matter (PM₂.<sub