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McDaniel, Jena; Yoder, Paul; Estes, Annette; Rogers, Sally J. – Journal of Speech, Language, and Hearing Research, 2020
Purpose: This study was designed to test the incremental validity of more expensive vocal development variables relative to less expensive variables for predicting later expressive language in children with autism spectrum disorder (ASD). We devote particular attention to the added value of coding the quality of vocalizations over the quantity of…
Descriptors: Autism, Pervasive Developmental Disorders, Expressive Language, Verbal Communication