The autism is the most common out from the group of pathological conditions called pervasive developmental disorders (PDD). It affects three crucial parts of development: verbal and nonverbal communication, social interaction, and the creative, or the imaginative game. It affects all the races, ethnicity and socio-economic spheres.The first signs of autism are 80% usually noticeable by the third year of the child’s development. The autism affects boys three to four times more than it does to girls with an equal level of intelligence.Around 75% are of low level of intelligence, whereas 10% of them can demonstrate high level of intelligence in specific areas, such as mathematics.Even if the reasons for speaking and language problems in autism...