Cited by 633Autism Spectrum Disorder ResearchChild Nutrition and Feeding IssuesGenetics and Neurodevelopmental Disorders

How Different Are Girls and Boys Above and Below the Diagnostic Threshold for Autism Spectrum Disorders?

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Dworzynski, Katharina, Ronald, Angelica, Bolton, Patrick, Happé, Francesca·2012·Journal of the American Academy of Child & Adolescent Psychiatry

Abstract

Objective This study aimed to explore sex differences in autistic traits in relation to diagnosis, to elucidate factors that might differentially impact whether girls versus boys meet diagnostic criteria for autism or a related autism spectrum disorder (ASD).Method Data from a large population-based sample of children were examined. Girls and boys (aged 10-12 years) meeting diagnostic criteria for an ASD were compared with those failing to meet diagnostic criteria despite very high scores on a trait measure of ASD, the Childhood Autism Spectrum Test (CAST). Information about behavioral difficulties as reported by teachers, and early estimates of intellectual functioning, were compared.Results Girls, but not boys, meeting diagnostic criteria for ASD showed significantly more additional problems (low intellectual level, behavioral difficulties) than peers with similarly high CAST scores who did not meet diagnostic criteria.Conclusions These data suggest that, in the absence of additional intellectual or behavioral problems, girls are less likely than boys to meet diagnostic criteria for ASD at equivalently high levels of autistic-like traits. This might reflect gender bias in diagnosis or genuinely better adaptation/compensation in girls.

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Crossref · 10.1016/j.jaac.2012.05.018

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  • Among females and males with similar ASD traits, females with more behavior problems or intellectual disability, or both, are more likely to be recognized and diagnosed.

    “Among females and males with similar ASD traits, females with more behavior problems or ID, or both, are more likely to be recognized and diagnosed [34, 35].”

    From DSM-5 criteria for autism spectrum disorder maximizes diagnostic sensitivity and specificity in preschool children (2019) · cites this paper as [34]

    The Discussion (page not supplied) reports that lower cognitive ability and/or additional behavior problems distinguished diagnosed from undiagnosed girls with similarly high ASD traits, but not boys. It suggests that girls may be missed in diagnosis, while also offering better adaptation as an alternative explanation; it does not establish that the additional problems make girls more likely to be recognized. (LLM, conf=0.86)

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  • In a population-based sample, girls, but not boys, meeting diagnostic criteria for ASD showed significantly lower levels of verbal cognitive ability than peers with similarly high CAST scores who did not meet criteria for ASD.

    “Dworzynski et al. (2012) found that in a population-based sample, girls, but not boys, meeting diagnostic criteria for ASD showed significantly lower levels of verbal cognitive ability than peers with similarly high CAST (Childhood Autism Spectrum Test) scores who did not meet criteria for ASD.”

    From Barriers to Autism Spectrum Disorder Diagnosis for Young Women and Girls: a Systematic Review (2021) · cites this paper as Dworzynski et al. 2012

    The Dichotomous Measures section reports that diagnosed girls were significantly more likely than high-CAST girls to have low early cognitive abilities, including verbal ability. But it also reports a significant difference for verbal ability in boys: diagnosed boys had 2.7 times the odds of falling more than 1.5 standard deviations below the mean compared with high-CAST boys. The claim’s “but not boys” qualification is therefore unsupported. (LLM, conf=0.91)

    Experimental — accuracy not yet measured
  • Verbally able girls may be waiting longer for a diagnosis, supporting the suggestion that additional language or other difficulties are often necessary for girls to receive an ASD diagnosis in contrast to boys.

    “These results indicate that verbally able girls may be waiting longer for a diagnosis, thereby supporting Dworzynski et al.’s (2012) suggestion that additional language (or other) difficulties are often necessary for girls to receive an ASD diagnosis in contrast to boys.”

    From Barriers to Autism Spectrum Disorder Diagnosis for Young Women and Girls: a Systematic Review (2021) · cites this paper as Dworzynski et al. 2012

    The Discussion suggests that girls with high ASD traits may need additional problems to cross the diagnostic threshold, and the Clinical Guidance identifies lower intellectual level or behavioral problems. The paper does not specifically establish additional language difficulties or that such difficulties are often necessary. The statement about waiting longer is the citing authors’ interpretation of their own results, not a finding attributed to this source. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Girls with ASD may be missed in the diagnostic process and require additional verbal ability or behaviour problems to be noticed and to reach the diagnostic threshold, unlike boys.

    “our results suggest that girls might be being missed within the diagnostic process, and that they require additional problems in verbal ability or behaviour, in order to be noticed and to push them over the diagnostic threshold, a finding which did not occur for boys (Duvekot et al. 2017; Dworzynski et al. 2012; Salomone et al. 2016).”

    From Barriers to Autism Spectrum Disorder Diagnosis for Young Women and Girls: a Systematic Review (2021) · cites this paper as Dworzynski et al. 2012

    The Discussion says girls with high ASD traits may be missed and may need additional cognitive or behavioral problems to cross the diagnostic threshold, a pattern it characterizes as absent in boys. The Dichotomous Measures results qualify the claim about verbal ability: diagnosed boys, too, had significantly higher odds of low verbal cognitive ability than their nondiagnosed high-trait peers. The behavioral-problems result was significant for girls but not boys. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Four papers described gender comparisons in behavioural problems and presented conflicting findings.

    “Four papers described comparisons between genders and presented conflicting findings (Duvekot et al. 2017; Dworzynski et al. 2012; Giarelli et al. 2010; Petrou et al. 2018).”

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Authors
Dworzynski, K., Ronald, A., Bolton, P., & Happé, F.
Affiliations
  • Royal College of Physicians (GB)
  • Birkbeck, University of London (GB)
  • King's College London (GB)
Venue
Journal of the American Academy of Child & Adolescent Psychiatry
Publisher
Elsevier BV
Published
2012-08
Volume
51
Issue
8
Pages
788-797
ISSN
0890-8567 (ISSN-L)
OpenAlex
W2019357894
Cited by
633
References
25
Citations by year
2026: 28 · 2025: 39 · 2024: 39 · 2023: 55 · 2022: 62 · 2021: 65 · 2020: 66 · 2019: 49 · 2018: 48 · 2017: 52 · 2016: 35 · 2015: 43 · 2014: 19 · 2013: 26 · 2012: 5
FWCI
15.22
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Academy of Child & Adolescent Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • BIROn (Birkbeck, University of London) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Autism Speaks (AS1650)
  • National Institute for Health and Care Research (NF-SI-0510-10268)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
autism spectrum disorder, sex differences, autistic traits, diagnostic thresholds, gender bias in diagnosis, intellectual functioning, behavioral problems, girls, children
MeSH terms
Behavioral Symptoms, Child, Child Development, Child Development Disorders, Pervasive, Diagnostic Errors, Diseases in Twins, Female, United Kingdom, Humans, Male, Intellectual Disability, Psychiatric Status Rating Scales, Psychological Techniques, Risk Factors, Sex Factors, Diagnostic and Statistical Manual of Mental Disorders, Sexism

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