Aba versus teacch the case for defining and validating

ASD is characterized by severe difficulties in reciprocal social interaction, stereotyped patterns of behavior and profound impairments in verbal and nonverbal communication.

Materials and Method: In this experimental study, 150 children with ASD, who referred to psychiatry clinics of children in two Mashhad academic Hospitals-Iran, were enrolled.

However, they typically do not have problems with language or intellectual disability.

Pervasive Developmental Disorder – Not Otherwise Specified (PDD-NOS; also called "atypical autism")People who meet some of the criteria for autistic disorder or Asperger syndrome, but not all, may be diagnosed with PDD-NOS.

At the first, they divided into 3 groups (N=50 patients in each group).

All groups were educated and treated with Holistic Multidimensional Treatment Model (HMTM) method but for different periods: one, two, and three years.

It was once thought to be the result of faulty child-rearing.

This historical psychosocial theory has been rejected, as research clearly indicates that the etiology is multi-factorial with a strong genetic basis(11).

They have fewer problems with speech but may still have difficulties with understanding and processing language(1-3).

Introduction: Autism spectrum disorders (ASD) belong to the pervasive neurodevelopmental disorders.

The prevalence of ASD has increased significantly throughout recent decades, bringing the overall estimated prevalence to 11. children.

Epidemiology ASD occurs more often in boys than girls, with a 4:1 male-to-female ratio(4).

The reported prevalence rates of autism and its related disorders have been increasing worldwide over the past decades, from approximately 4 per 10 000 to children(5-9).

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