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The Diagnostic and Statistical Manual begins to broaden definition of autism.

1987

The Story of Disability Justice
DCRJ
MHP

The authors of the manual begin to broaden its definition of autism: "by adding a diagnosis at the mild end of the spectrum... and dropping the requirement for onset before 30 months. Even though the manual did not use the word ‘spectrum,’ the change reflected the growing understanding among researchers that autism is not a single condition but rather a spectrum of conditions that can present throughout life" (Zeldovich, 2018).