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Is dyslexia a visual perceptive disorder? New empirical data.
MedLine Citation:
PMID:  22420343     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Is dyslexia a visual perceptive disorder? New empirical data. Several studies have shown that a phonological deficit is the origin of developmental dyslexia, because dyslexics have important difficulties in mapping orthographic to phonological codes. However, visual criteria are still used for the diagnosis of dyslexia and to develop methods of intervention. This study attempts to determine whether there are visual problems in dyslexic children. To this aim, dyslexic children and children without reading difficulties, matched by chronological age, participated in two experiments. One study was based on the Reversal test and the other was a visual decision task in which participants had to decide whether two letters were the same or different. There were 40 pairs of letters, to measure reaction times and mistakes. The results showed that dyslexics had similar performance to controls in the detection of different visual stimuli. Developmental dyslexics do not appear to have visual perceptual problems, but a particular difficulty to retrieve the phonological code of graphemes.
Authors:
Paz Suárez Coalla; Fernando Cuetos Vega
Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Psicothema     Volume:  24     ISSN:  1886-144X     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-3-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101189384     Medline TA:  Psicothema     Country:  -    
Other Details:
Languages:  SPA     Pagination:  188-192     Citation Subset:  -    
Affiliation:
Universidad de Oviedo.
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