ERIC Number: EJ792589
Record Type: Journal
Publication Date: 2008-Jun
Reference Count: 0
Speed of Processing and Reading Disability: A Cross-Linguistic Investigation of Dyslexia and Borderline Intellectual Functioning
Bonifacci, Paola; Snowling, Margaret J.
Cognition, v107 n3 p999-1017 Jun 2008
English and Italian children with dyslexia were compared with children with reading difficulties associated with low-IQ on tests of simple and choice RT, and in number and symbol scanning tasks. On all four speed-of-processing tasks, children with low-IQ responded more slowly than children with dyslexia and age-controls. In the choice RT task, the performance of children with low-IQ was also less accurate than that of children of normal IQ, consistent with theories linking processing speed limitations with low-IQ. These findings support the hypothesis that dyslexia is a specific cognitive deficit that can arise in the context of normal IQ and normal speed of processing. The same cognitive phenotype was observed in readers of a deep (English) and a shallow (Italian) orthography.
Descriptors: Reading Difficulties, Intelligence, Dyslexia, Intelligence Quotient, Comparative Analysis, Cognitive Processes, Control Groups, Task Analysis, English, Italian
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Publication Type: Journal Articles; Reports - Evaluative
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