The Rising Prevalence of Autism
Over the years, the definitions of autism have changed dramatically and this has resulted in equally dramatic changes in its prevalence. Starting with Kanner’s narrow view of what constituted autism, the definition of autism has been progressively widened in its scope.
From the mid-1960s onwards, child psychologists started using the word ‘autism’ to describe the exact opposite of what it had meant previously. In the 1950s, autism was used to refer to children who suffered from hallucinations and ...