Cited by 143Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersChild Nutrition and Feeding Issues

A radical change in our autism research strategy is needed: Back to prototypes

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Mottron, Laurent·2021·Autism Research

Abstract

The evolution of autism diagnosis, from its discovery to its current delineation using standardized instruments, has been paralleled by a steady increase in its prevalence and heterogeneity. In clinical settings, the diagnosis of autism is now too vague to specify the type of support required by the concerned individuals. In research, the inclusion of individuals categorically defined by over‐inclusive, polythetic criteria in autism cohorts results in a population whose heterogeneity runs contrary to the advancement of scientific progress. Investigating individuals sharing only a trivial resemblance produces a large‐scale type‐2 error (not finding differences between autistic and dominant population) rather than detecting mechanistic differences to explain their phenotypic divergences. The dimensional approach of autism proposed to cure the disease of its categorical diagnosis is plagued by the arbitrariness of the dimensions under study. Here, we argue that an emphasis on the reliability rather than specificity of diagnostic criteria and the misuse of diagnostic instruments, which ignore the recognition of a prototype, leads to confound autism with the entire range of neurodevelopmental conditions and personality variants. We propose centering research on cohorts in which individuals are selected based on their expert judged prototypicality to advance the theoretical and practical pervasive issues pertaining to autism diagnostic thresholds. Reversing the current research strategy by giving more weight to specificity than reliability should increase our ability to discover the mechanisms of autism. Lay Summary: Scientific research into the causes of autism and its mechanisms is carried out on large cohorts of people who are less and less different from the general population. This historical trend may explain the poor harvest of results obtained. Services and intervention are provided according to a diagnosis that now encompasses extremely different individuals. Last, we accept as a biological reality the constant increase over the years in the proportion of autistic people among the general population. These drifts are made possible by the attribution of a diagnosis of autism to people who meet vague criteria, rather than to people who experienced clinicians recognize as autistic. We propose to change our research strategy by focusing on the study of the latter, fewer in number, but more representative of the “prototype” of autism. To do this, it is necessary to clearly distinguish the population on which the research is carried out from that to which we provide support. People must receive services according to their needs, and not according to the clarity of their diagnosis.

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  • ICD-11 draws particular attention to high-functioning (adult) individuals with ASD, and there is concern that prototypical and low-functioning cases become neglected in research and clinical practice.

    “Further, since ICD-11 draws particular attention to high-functioning (adult) individuals with ASD, there is concern that “prototypical” [44] as well as low-functioning cases increasingly become neglected in research and clinical practice.”

    From Autism spectrum disorder in ICD-11—a critical reflection of its possible impact on clinical practice and research (2024) · cites this paper as [44]

    The Abstract and Conclusion (pages unavailable) argue that research should focus more on prototypical autistic individuals, supporting the concern about their underrepresentation in research. The cited paper does not establish that prototypical cases are increasingly neglected in clinical practice; it also does not link the concern to ICD-11's attention to high-functioning adults. The citation is attached specifically to “prototypical,” not to the separate claim about low-functioning cases. (LLM, conf=0.82)

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Authors
Mottron, L.
Affiliations
Santé Québec Centre-Sud-de-l’Île-de-Montréal – Universitaire (CA)
Corresponding author
Mottron, Laurent
Venue
Autism Research
Publisher
Wiley
Published
2021-06-02
Volume
14
Issue
10
Pages
2213-2220
ISSN
  • 1939-3792 (ISSN-L)
  • 1939-3806
OpenAlex
W3164845480
Cited by
143
References
39
Citations by year
2026: 9 · 2025: 18 · 2024: 19 · 2023: 44 · 2022: 27 · 2021: 24 · 2013: 1
FWCI
14.96
Type
journal article
Language
en
Open access
Locations
  • Autism Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
Keywords
autism spectrum disorder, autism diagnosis, diagnostic criteria, prototype, dimensional approach, diagnostic specificity, reliability statistics, autism prevalence, autism heterogeneity
MeSH terms
Autism Spectrum Disorder, Autistic Disorder, Humans, Research Design, Reproducibility of Results, Prevalence

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