Deep Dyslexia and Developmental Dyslexia: A Parallel  

Oleh:

Siegel, Linda S.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Language Sciences (Full Text) vol. 7 no. 1 (1985), page 53-71.
Fulltext: 07_01_Siegel.pdf (853.16KB)

Isi artikel

Deep dyslexia is an acquired reading disorder in which the substitution of semantically, but not visually, similar words in single word reading sometimes occurs. For example, city may be read as town or large as big. It has been reported in individuals who have sustained left hemisphere injuries as adults. The purpose of this paper is to provide evidence for a parallel between deep dyslexia and certain kinds of developmental dyslexia. In this chapter, a ease of deep dyslexia in an adult female who sustained a left hemisphere cerebrovascular accident is described. In addition, the reading and language behavior of six children with severe reading disorders who show certain characteristics which are similar to the adult deep dyslexic are also described. Deep dyslexia implies the severe impairment of phonological processing in reading because of the nature of the reading errors and the inability to read nonwords. While this impairment of phonological processing influences certain aspects of reading, the performance of deep dyslexics implies that the use of a phonological code is not necessary for word recognition. The nature of the errors in deep dyslexia demonstrates the importance of semantic processing in reading and suggests that semantic networks may be relatively intact, although phonological processing is negli ;ible or nonexistent. In the case of the young children, however, it can be said that semantic processing of the written word may have been developed earlier than phonological processing. It follows that the presence of deep dyslexic symptoms in both adults and children suggests the primacy of semantic processing in the earlier or more primitive stages of reading.

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