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Construct Validity of the First-Year Inventory (FYI Version 2.0) in 12-Month-Olds at High-Risk for Autism Spectrum Disorder
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Lee, Helen Y.; Vigen, Cheryl; Zwaigenbaum, Lonnie; Smith, Isabel M.; Brian, Jessica; Watson, Linda R.; Crais, Elizabeth R.; Baranek, Grace T. – Autism: The International Journal of Research and Practice, 2021
This study examines the construct validity of the First-Year Inventory 2.0 with respect to other established instruments in a sample of high-risk infant siblings of children with Autism Spectrum Disorder. The First-Year Inventory 2.0 is a parent-report screening instrument designed to identify 12-month-old infants at risk for an eventual diagnosis…
Descriptors: Test Validity, Construct Validity, Autism, Pervasive Developmental Disorders
Stability and Change in Autism Spectrum Disorder Diagnosis from Age 3 to Middle Childhood in a High-Risk Sibling Cohort
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Brian, Jessica; Bryson, Susan E.; Smith, Isabel M.; Roberts, Wendy; Roncadin, Caroline; Szatmari, Peter; Zwaigenbaum, Lonnie – Autism: The International Journal of Research and Practice, 2016
Considerable evidence on autism spectrum disorder emergence comes from longitudinal high-risk samples (i.e. younger siblings of children with autism spectrum disorder). Diagnostic stability to age 3 is very good when diagnosed as early as 18-24 months, but sensitivity is weaker, and relatively little is known beyond toddlerhood. We examined…
Descriptors: Autism, Pervasive Developmental Disorders, Clinical Diagnosis, Toddlers