Assessment of subtypes of Dyslexic dysgraphia

Abstract

Developmental dysgraphia is a disorder characterized by difficulties in the acquisition of writing skills, with writing performance below that expected based on children’s class level. It is closely related to developmental dyslexia, a disorder in the acquisition of reading skills. According to the" dual-route model of single word reading" decoding (reading) or encoding (writing) can be achieved through "a lexical route"(which allows the correct pronunciation and writing of stored words) and "a non-lexical route"(which allows correct phoneme to grapheme conversion). Developmental dyslexia and dyslexic dysgraphia accordingly could be divided into: surface dyslexia & deep dyslexia and surface dysgraphia & deep dysgraphia. Patients with surface dyslexia and surface dysgraphia occur due to affection of the lexical route which forces them to depend on phoneme grapheme conversion. Such patients have problems reading very long words and words with irregular spelling-sound correspondence, since these words are hard to pronounce by grapheme-phoneme conversion only or words that when read with phoneme grapheme conversion only can be read as other words.