Deep Dysgraphia in Turkish
Author(s) -
Ilhan Raman,
Brendan Weekes
Publication year - 2005
Publication title -
behavioural neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.859
H-Index - 48
eISSN - 1875-8584
pISSN - 0953-4180
DOI - 10.1155/2005/568540
Subject(s) - orthography , dysgraphia , turkish , spelling , linguistics , phonology , psychology , semantics (computer science) , computer science , artificial intelligence , reading (process) , dyslexia , philosophy , programming language
Deep dysgraphic patients make semantic errors when writing to dictation and they cannot write nonwords. Extant reports of deep dysgraphia come from languages with relatively opaque orthographies. Turkish is a transparent orthography because the bidirectional mappings between phonology and orthography are completely predictable. We report BRB, a biscriptal Turkish-English speaker who has acquired dysgraphia characterised by semantic errors as well as effects of grammatical class and imageability on writing in Turkish. Nonword spelling is abolished. A similar pattern of errors is observed in English. BRB is the first report of acquired dysgraphia in a truly transparent writing system. We argue that deep dysgraphia results from damage to the mappings that are common to both languages between word meanings and orthographic representations.
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