Premium
Phonological recoding deficit in working memory of dyslexic teenagers
Author(s) -
Palmer Sue
Publication year - 2000
Publication title -
journal of research in reading
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.077
H-Index - 51
eISSN - 1467-9817
pISSN - 0141-0423
DOI - 10.1111/1467-9817.00100
Subject(s) - psychology , working memory , memory span , dyslexia , baddeley's model of working memory , developmental psychology , similarity (geometry) , cognition , coding (social sciences) , developmental dyslexia , cognitive psychology , short term memory , audiology , linguistics , reading (process) , medicine , philosophy , statistics , mathematics , neuroscience , artificial intelligence , computer science , image (mathematics)
The picture span performance of developmental dyslexic teenagers (mean age 14 years 1 month) was compared to the picture span performance of both RA (mean age 9 years 0 month) and chronological age match controls (mean age 14 years 1 month). Three stimulus lists were manipulated for visual and phonological similarity. Findings indicated that all three groups showed a significant phonological similarity effect but only the dyslexic group showed a significant visual similarity effect. The presence of dual visual‐verbal coding is postulated to be responsible for the ‘noisy’ encoding which others (e.g. Johnston and Anderson, 1998; Swan and Goswami, 1997) have suggested is a root cause of dyslexia. The results are discussed in terms of developmental deficits in the central executive of the working memory system.