According to the historical definitions of autism, what significant change was made in the DSM-5?

The significant change made in the DSM-5 regarding autism is the reclassification of autism spectrum disorders into a single category known as Autism Spectrum Disorder (ASD). This shift consolidated previously distinct subcategories such as Asperger's syndrome and pervasive developmental disorder-not otherwise specified (PDD-NOS) under one umbrella.

The rationale behind this change was to reflect a more accurate understanding of the spectrum of autism, emphasizing that individuals may present a variety of symptoms, severities, and ranges of functioning. By adopting a singular term, the DSM-5 aimed to foster consistency in diagnosis and to acknowledge the continuum of symptoms present in individuals with autism. This adjustment in classification allows for more individualized assessment and intervention strategies based on a nuanced understanding of each person's specific needs rather than relying on rigid criteria tied to subtypes.

The other choices do not accurately capture the essence of the changes made in the DSM-5 regarding autism. The option about introducing separate categories directly opposes the median purpose of the change, while the removal of "autism" altogether and the idea that autism is recognized only in children are not aligned with the actual classifications put forth in the DSM-5. Thus, the correct answer highlights the thoughtful integration and redefinition of autism as a spectrum reflecting