“Could some of the challenging behaviours that often partner autism begin as experiements on measuring human reactions? Are these children exploring boundaries - seeing what makes the toy squeak or the adult shriek?” SocialBoundariesExperimentsReactionsAutismShriek Book:Colour Coding for Learners with Autism: A Resource Book for Creating Meaning through Colour at Home and School Source: Colour Coding for Learners with Autism: A Resource Book for Creating Meaning through Colour at Home and School