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Leo Kanner presented the original designation and definition of autism, "problems with basic socialization and communication, strange intonation and facial expressions, and intense preoccupations or repetitive behaviors."
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Kanner claims autism is due to a mother who is cold and lacks empathy; he also claims autism is associated with highly intellectual biological parents.
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Bruno Bettleheim claims that autism was an emoitonal disorder.
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In 1964 Bernard Rimland made ties to a father's tendencies and his son's.
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Schopler started the Treatment and Education of Autistic and Related Communication Handicapped Children (TEACCH) program at the University of North Carolina.
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"Autistic Disorder" replaced "Infantile Autism" in the manual and gave a more expansive explanation of the diagnosis.
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In 1991, schools begin to identify and serve students with autism.
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In 1994, both Pervasive Developmental Disorder- Not Otherwise Specified (PDD-NOS), and Aspergers Syndrome and Asperger's Syndrome we added to the Diagnostic and Statistical Manual of Mental Disorders - 4th Edition. This is the main resource for a physician's diagnosis.
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Diagnostic and Statistical Manual of Mental Disorders - Fifth Edition (DSM-IV) brought about significant changes in the manual; the diagnosis will now be referred to as Autism Spectrum Disorder (ASD). There will no longer be sub diagnoses such as Asperger syndrome, PDD-NOS, etc.