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Different Underlying Neurocognitive Deficits in Developmental Dyslexia: A Comparative Study

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Title: Different Underlying Neurocognitive Deficits in Developmental Dyslexia: A Comparative Study
Language: English
Authors: Menghini, D., Finzi, A., Benassi, M.
Source: Neuropsychologia. Mar 2010 48(4):863-872.
Availability: Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
Peer Reviewed: Y
Physical Description: PDF
Page Count: 10
Publication Date: 2010
Document Type: Journal Articles
Reports - Research
Descriptors: Dyslexia, Children, Comparative Analysis, Cognitive Processes, Attention, Phonology, Learning, Visual Perception, Individual Differences
DOI: 10.1016/j.neuropsychologia.2009.11.003
ISSN: 0028-3932
Abstract: The aim of this study was to investigate the role of several specific neurocognitive functions in developmental dyslexia (DD). The performances of 60 dyslexic children and 65 age-matched normally reading children were compared on tests of phonological abilities, visual processing, selective and sustained attention, implicit learning, and executive functions. Results documented deficits in dyslexics on both phonological and non-phonological tasks. More stringently, in dyslexic children individual differences in non-phonological abilities accounted for 23.3% of unique variance in word reading and for 19.3% in non-word reading after controlling for age, IQ and phonological skills. These findings are in accordance with the hypothesis that DD is a multifactorial deficit and suggest that neurocognitive developmental dysfunctions in DD may not be limited to the linguistic brain area, but may involve a more multifocal cortical system. (Contains 4 tables and 3 figures.)
Abstractor: As Provided
Entry Date: 2010
Accession Number: EJ877575
Database: ERIC
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  Data: Different Underlying Neurocognitive Deficits in Developmental Dyslexia: A Comparative Study
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  Data: <searchLink fieldCode="SO" term="%22Neuropsychologia%22"><i>Neuropsychologia</i></searchLink>. Mar 2010 48(4):863-872.
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  Data: Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
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  Data: The aim of this study was to investigate the role of several specific neurocognitive functions in developmental dyslexia (DD). The performances of 60 dyslexic children and 65 age-matched normally reading children were compared on tests of phonological abilities, visual processing, selective and sustained attention, implicit learning, and executive functions. Results documented deficits in dyslexics on both phonological and non-phonological tasks. More stringently, in dyslexic children individual differences in non-phonological abilities accounted for 23.3% of unique variance in word reading and for 19.3% in non-word reading after controlling for age, IQ and phonological skills. These findings are in accordance with the hypothesis that DD is a multifactorial deficit and suggest that neurocognitive developmental dysfunctions in DD may not be limited to the linguistic brain area, but may involve a more multifocal cortical system. (Contains 4 tables and 3 figures.)
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