Autism spectrum disorder is a disorder that causes difficulties in communication and interaction. Some of the characteristics of this disorder are repetitive behavior, sensory issues and cognitive issues. It is mainly diagnosed around the age of three to four. The main causes of autism are genetics, neuroanatomical abnormalities and environmental factors. The topics covered in this extensive book deal with the core aspects of autism spectrum disorder. It will prove to be immensely beneficial to students and researchers in this field.