Autism is a developmental disability significantly affecting verbal and nonverbal communication and social interaction. Signs include repetitive behaviors, lack of eye contact, preference to being alone, and highly restrictive interests. There are several different types of autism including Asperger Syndrome, Pervasive Developmental Disorder - Not Otherwise Specified, and Childhood disintegrative disorder. This umbrella is known as the autism spectrum. Furthermore, this also makes the point that not all autistic children are the same.