In the early twentieth century, the main cause of autism was considered to be the cold and rejecting behavior of parents. (Ashkan Divan Beigi. Arash Divan Beigi 1393)
. In his 1943 paper, Leukarner concluded that autism exists from birth (Leukarner 1943)
Leucanner was described after examining eleven children who he thought were completely different from other children in terms of the disorder. According to Connor, the main feature of this disorder is the inability of affected children to communicate with others from birth and to avoid them and loneliness. To describe this intense loneliness, Connor used the term autism, which means not being absorbed in mental activity.
(Rozita Salehi. Zahra Ebrahimi. Lavafi Court 2016)
It was first suggested in 1964 that autism probably had a neurological cause. (Ashkan Divan Beigi. Arash Divan Beigi 1393)
Autism spectrum disorder is a pervasive developmental disorder that begins before the age of 36 months and always begins before the age of three. Boys are 4 to 5 times more likely than girls to develop this disorder (Roghayeh Nasiri. Dr. Elahe Mohammad Ismail Ghazal Amiri Maryam Nasiri 1395
Diagnostic criteria for autism spectrum disorder are identified in two behavioral contexts. A) Insufficiency in social communication and social interaction, which includes problems in social initiation and response to non-verbal communication problems and problems of awareness, insight and social relations. B) Limited repetitive behaviors and activities that involve unusual play and movements and rituals with specific objects and subjects and unusual sensory behaviors. Arezoo Rezaei. Maliha Sadat Kazemi 1396
Autism spectrum disorder is a profound emotional disorder. Leukarner defined autism as the inability to communicate emotionally with people. (Sanderbagger. Hansem Cott. Caroline Reef. Mark Maroon Trout. Hoda Steg 2007)
Among the problems that children on the autism spectrum face:
Defects in the perception of emotions are among the diagnos