Debate Over Autism Spectrum Definition Sparks Clash Between Researchers and Advocates

Dame Uta Frith, an 85-year-old pioneer in autism research, has warned that the autism spectrum may be collapsing under the weight of vastly different cases, from individuals with profound learning disabilities to late-diagnosed adults, especially women. She suggests that many recent diagnoses could be misdiagnoses, arguing for a more precise, perhaps narrower, definition. The National Autistic Society and autistic academics such as Monique Botha have condemned her remarks as harmful misinformation that threatens the rights and services of autistic people.

The dispute comes as England’s recorded autism diagnoses have risen from just over 700,000 to about 1.1 million, while a government-ordered review of neurodivergent diagnoses is pending publication. Researchers like Varun Warrier point to genetic differences between early- and late-diagnosed individuals, while Simon Baron-Cohen proposes a subtype system to better target support. The debate underscores the challenge of balancing scientific classification with lived experience and service provision.