title: Enhanced perceptual processing of speech in autism.
abstract: Theories of autism have proposed that a bias towards low-level perceptual information, or a featural/surface-biased information-processing style, may compromise higher-level language processing in such individuals. Two experiments, utilizing linguistic stimuli with competing low-level/perceptual and high-level/semantic information, tested processing biases in children with autism and matched controls. Whereas children with autism exhibited superior perceptual processing of speech relative to controls, and showed no evidence of either a perceptual or semantic processing bias, controls showed a tendency to process speech semantically. The data provide partial support to the perceptual theories of autism. It is additionally proposed that the pattern of results may reflect different patterns of attentional focusing towards single or multiple stimulus cues in speech between children with autism and controls.
authors.affiliation: Goldsmiths College, University of London, UK. pasley@salk.edu
authors.forename: Anna
authors.initials: A
authors.lastname: Järvinen-Pasley
authors.forename: Gregory L
authors.initials: GL
authors.lastname: Wallace
authors.forename: Franck
authors.initials: F
authors.lastname: Ramus
authors.forename: Francesca
authors.initials: F
authors.lastname: Happé
authors.forename: Pamela
authors.initials: P
authors.lastname: Heaton
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000293:Adolescent; D000704:Analysis of Variance; D001321:Autistic Disorder / Q000503:physiopathology*; D002648:Child; D032882:Comprehension / Q000502:physiology*; D005260:Female; D006801:Humans; D008037:Linguistics / Q000379:methods; D008297:Male; D013060:Speech / Q000502:physiology*; D013067:Speech Perception / Q000502:physiology*