Reading disabilities in SLI and dyslexia result from distinct phonological impairments.
Children with specific language impairment (SLI) who show impaired phonological processing are at risk of developing reading disabilities, which raises the question of phonological impairment commonality between developmental dyslexia (DD) and SLI. In order to distinguish the failing phonological processes in SLI and DD, we investigated the different steps involved in speech processing going from perceptual discrimination through various aspects of phonological memory. Our results show that whereas the memory for sequence is likewise impaired in either disorder, children with SLI have to face additional impairment in phonological discrimination and short-term memory, which may account for even poorer phonological awareness than dyslexics'.
Nithart
Christelle
C
CNRS-UMR 7191 Laboratoire d'Imagerie et de Neurosciences Cognitives and Faculté de Psychologie, Université Louis Pasteur, Strasbourg, France.
Demont
Elisabeth
E
Majerus
Steve
S
Leybaert
Jacqueline
J
Poncelet
Martine
M
Metz-Lutz
Marie-Noëlle
MN
D000293:Adolescent; D000704:Analysis of Variance; D001184:Articulation Disorders / Q000150:complications*; D001307:Auditory Perception; D002648:Child; D002658:Developmental Disabilities / Q000503:physiopathology*; D004410:Dyslexia / Q000145:classification* / Q000209:etiology*; D005260:Female; D006801:Humans; D007805:Language Development Disorders; D007807:Language Tests; D008297:Male; D008433:Mathematics; D008570:Memory, Short-Term / Q000502:physiology; D011939:Mental Recall / Q000502:physiology; D009483:Neuropsychological Tests; D011578:Psycholinguistics; D012307:Risk Factors; D013067:Speech Perception; D014705:Verbal Behavior / Q000502:physiology