<prompt> Which of the following is not true about the autistic specific disorderImpaired communicationImpaired imaginationLanguage developmental delayVision problems  <response>: 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 interactionImpaired communicationImpaired imaginationLanguage development is often quite delayed. 