Semantic errors in deep dyslexia: Does orthographic depth matter?

Semantic errors of oral reading by aphasic patients are said to be comparatively rare in languages with a shallow orthography. The present report concerns three bilingual brain-damaged patients who prior to their stroke were fluent in both English, an orthographically deep language, and Welsh, an or...

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Bibliographic Details
Published in:Cognitive neuropsychology 2007-05, Vol.24 (3), p.312-323
Main Authors: Beaton, Alan A., Wyn Davies, Nia
Format: Article
Language:English
Subjects:
Adult and adolescent clinical studies
Aged
Aphasia - diagnosis
Aphasia - etiology
Biological and medical sciences
Brain - diagnostic imaging
Cerebral Infarction - complications
Cerebral Infarction - diagnostic imaging
Dyslexia - diagnosis
Dyslexia - etiology
England
Female
Functional Laterality
Humans
Language and communication disorders
Male
Medical sciences
Middle Aged
Multilingualism
Neurology
Neuropsychological Tests
Organic mental disorders. Neuropsychology
Parietal Lobe - diagnostic imaging
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Semantics
Severity of Illness Index
Tomography, X-Ray Computed
Vascular diseases and vascular malformations of the nervous system
Wales
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Summary:Semantic errors of oral reading by aphasic patients are said to be comparatively rare in languages with a shallow orthography. The present report concerns three bilingual brain-damaged patients who prior to their stroke were fluent in both English, an orthographically deep language, and Welsh, an orthographically shallow language. On a picture-naming task, each patient made a similar proportion of semantic errors in the two languages. Similarly, in oral reading of the corresponding words, no patient produced proportionally more semantic paralexias in English than in Welsh. The findings are discussed in relation to the summation hypothesis as invoked by Miceli, Capasso, and Caramazza (1994) to explain apparent differences in frequency of semantic errors of reading in languages differing in orthographic depth.
ISSN:0264-3294
1464-0627
DOI:10.1080/02643290701251957