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Kanner's Diagnose Autism Analysis

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Diagnose autism has changed substantially since the diagnosis was first introduced nearly 75 years ago. In 1943, Leo Kanner first coined to describe children who seemed socially isolated and withdrawn. In 1966, researchers estimated that about 1 in 2,500 children had autism, according to criteria derived from Kanner’s description. This and other early estimates of prevalence probably focused on children at the severe end of the spectrum and missed those with subtler features. Autism didn’t make its debut in the DSM until 1980. In 1987, a new edition expanded the criteria by allowing a diagnosis even if symptoms became apparent after 30 months of age. To garner a diagnosis, a child needed to meet 8 of 16 criteria, rather than all 6 of the previous
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