Journal
AJIDD-AMERICAN JOURNAL ON INTELLECTUAL AND DEVELOPMENTAL DISABILITIES
Volume 124, Issue 5, Pages 438-449Publisher
AMER ASSOC INTELLECTUAL and DEVELOPMENTAL DISABILITIES - AAIDD
DOI: 10.1352/1944-7558-124.5.438
Keywords
autism spectrum disorder; autism; communication; verbal ability; assessment; measurement
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Funding
- National Institute of Mental Health of the National Institutes of Health [R01MH097726]
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Despite the importance of expressive language for individuals with autism spectrum disorder (ASD), expressive language assessments are not consistently included in ASD research and many studies do not adequately describe participants' verbal abilities. A valid and efficient measure of expressive language would facilitate consistent reporting across ASD research studies and provide data for additional analyses. The current study developed a new Autism Diagnostic Observation Schedule (ADOS-2) expressive language score and examined convergent and divergent validity in a large, well-defined sample of children with ASD. This score was highly correlated with other measures of expressive language (including parent-report, direct assessment, and clinician ratings) and less strongly correlated with measures of receptive language and nonverbal cognitive ability, providing good evidence of convergent and divergent validity.
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