Is the 'naming' deficit in dyslexia a misnomer?
We report a study that investigated the widely held belief that naming-speed deficits in developmental dyslexia reflect impaired access to lexical-phonological codes. To investigate this issue, we compared adult dyslexic and adult non-dyslexic readers' performance when naming and semantically categorizing arrays of objects. Dyslexic readers yielded slower response latencies than non-dyslexic readers when naming objects, but a subsequent comparison of object-naming and object-categorization tasks showed that the apparent 'naming' deficit could be attributed to a more general difficulty in retrieving information - either phonological or semantic - from the visual stimulus. Our findings suggest that although visual-phonological connections may be crucial in explaining naming-speed performance they do not fully characterise dyslexic readers' naming-speed impairments.
Jones
Manon W
MW
University of Edinburgh, UK. manon.wyn.jones@ed.ac.uk
Branigan
Holly P
HP
Hatzidaki
Anna
A
Obregón
Mateo
M
D000328:Adult; D004410:Dyslexia / Q000523:psychology*; D004522:Educational Status; D056344:Executive Function / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011578:Psycholinguistics; D014796:Visual Perception / Q000502:physiology; D055815:Young Adult