Which of the following is not true about the autistic specific disorder –
Autism is characterized by Impaired social interaction, impaired communication,,and restricted repetitive & stereotyped pattern of behavior.
Restricted repetitive stereotypes pattern of behavior is due to impaired imagination.
So, Diagnostic triad of features is : -


Impaired social interaction
Impaired communication
Impaired imagination


Language development is often quite delayed.
Impaired communication
Impaired imagination
Language developmental delay
Vision problems