How a Broader Definition of Autism Is Changing Diagnosis and Support

You Should Know: Autism diagnoses have been on the rise for decades, but much of it comes down to how we define autism in the first place. Growing awareness and better screening have also helped identify people who would have gone unrecognized in earlier generations. For many, a diagnosis has given them access to services and a clearer sense of their own experiences.

Going Deeper: But the broader definition of autism has also raised important questions. As more children are diagnosed, school support resources can get stretched thin, affecting those who need the most intensive help. There are also concerns that research will disproportionally focus on autistic children who have lower support needs. Although 40% of autistic children have an intellectual disability, they make up only about 6% of participants in studies.

Takeaway: A more inclusive definition helped many people receive the recognition and support they previously lacked. At the same time, some advocates worry that people with higher support needs may receive less visibility and fewer dedicated resources.

Bottom Line: Autism rates aren’t necessarily on the rise. Instead, more diagnoses reflect better awareness and broader inclusion of autistic people. The challenge is making sure that progress reaches everyone on the spectrum.