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Shallow or deep? The impact of orthographic depth on visual processing impairments in developmental dyslexia

Provazza, S, Adams, A-M and Roberts, D Shallow or deep? The impact of orthographic depth on visual processing impairments in developmental dyslexia. Annals of Dyslexia: an interdisciplinary journal of specific language disability. ISSN 0736-9387 (Accepted)

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Abstract

The extent to which impaired visual and phonological mechanisms may contribute to the manifestation of developmental dyslexia across orthographies of varying depth has yet to be fully established. By adopting a cross-linguistic approach, the current study aimed to explore the nature of visual and phonological processing in developmental dyslexic readers of shallow (Italian) and deep (English) orthographies, and specifically the characterisation of visual processing deficits in relation to orthographic depth. To achieve this aim, we administered a battery of non-reading visual and phonological tasks. Developmental dyslexics performed worse than typically developing readers on all visual and phonological tasks. Critically, readers of the shallow orthography were disproportionately impaired on visual processing tasks. Our results suggest that the impaired reading and associated deficits observed in developmental dyslexia may be underpinned by dual impairments to visual and phonological mechanisms that underpin reading, with the magnitude of the visual deficit varying according to orthographic depth.

Item Type: Article
Uncontrolled Keywords: 1103 Clinical Sciences, 1303 Specialist Studies in Education, 1702 Cognitive Sciences
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Psychology (new Sep 2019)
Publisher: Springer
Date Deposited: 30 Nov 2021 12:26
Last Modified: 30 Nov 2021 12:30
URI: https://researchonline.ljmu.ac.uk/id/eprint/15846

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