Although certain core criteria are required for a diagnosis of autism spectrum disorder, other behavioral, cognitive, genetic, and medical features are often seen in individuals diagnosed with autism spectrum disorder. this pattern of behaviors and other features have led psychologists to:

    Argue that autism is heterogeneous and the search is on for more homogeneous subgroups.

Explanation:  Autism Spectrum Disorder (ASD) has been identified since childhood and extends throughout life. It is primarily seen as a disorder in a person's communication with this disorder, as well as learning problems. There are also symptoms of unusual posture, facial expressions, strange tone of voice, impossibility of normal social communication, etc. In modern science, it is accepted that this disorder is heterogeneous and pervasive and has multiple subgroups, and concerns, in addition to essential disorders, impaired learning or unusual posture and facial expressions, some behavioural and cognitive symptoms, such as a permanent inability to social communication or limited and repetitive behavioural patterns.

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