Experimental research shows that many Autistic people have trouble ignoring visual “noise,” to the degree it really disrupts our processing.[2] Clutter can erode our focus, making it hard for us to think clearly or regulate our emotions. A study of Autistic schoolchildren found that many had trouble paying attention in classrooms where the walls were covered in distracting, bright posters, and the shelves were stuffed with books and toys.[3] Most children’s spaces are very busy and bright, despite how negatively this impacts Autistic kids’ processing.

— Unmasking Autism by Devon Price (Page 152)