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The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
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Author Spotlight: Exploring Sex-Specific Glial Signatures and Therapeutic Leads for Alzheimer's Disease
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Sex Differences on the ADOS-2.

Hannah M Rea1, Roald A Øien2,3, Frederick Shic4,5

  • 1Psychiatry & Behavioral Science Department, University of Washington, Seattle, WA, 98195, USA.

Journal of Autism and Developmental Disorders
|April 22, 2022
PubMed
Summary
This summary is machine-generated.

Autistic females show fewer social-communication differences on diagnostic tools like the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2). These differences disappear when accounting for symptom severity, suggesting assessment limitations.

Keywords:
ADOSAutismDiagnosisSex differences

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Area of Science:

  • Neurodevelopmental disorders
  • Psychiatry
  • Clinical psychology

Background:

  • Autism spectrum disorder (ASD) prevalence differs by sex.
  • Diagnostic measures may not fully capture ASD presentations in females.
  • The Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) is a gold-standard ASD assessment.

Purpose of the Study:

  • To compare autistic males and females on ADOS-2 items.
  • To investigate potential sex differences in ASD symptom presentation.
  • To determine if sex differences persist after controlling for symptom intensity.

Main Methods:

  • Analysis of ADOS-2 data from 467 autistic individuals (8-17 years old).
  • Comparison of item, subscale, and total scores between autistic males and females.
  • Statistical control for overall symptomatology intensity.

Main Results:

  • Females were less likely to exhibit atypicalities on most social-communication items.
  • Females scored lower on total and subscale scores compared to males.
  • No statistically significant sex differences remained after controlling for symptom intensity.

Conclusions:

  • Current diagnostic criteria and assessments may be less sensitive to female ASD presentations.
  • Autistic females might display fewer or less intense ASD-characteristic behaviors.
  • Further research is needed to refine ASD diagnostic tools for all sexes.