Mj. Tainturier, PHONOLOGICALLY BASED SPELLING-ERRORS AND THEIR IMPLICATIONS IN THE SPECIFICATION OF PHONOLOGY TO ORTHOGRAPHY CONVERSION PROCESSES, Brain and cognition, 32(2), 1996, pp. 148-151
We report a case of severe dysgraphia whose characteristics suggest an
exclusive reliance on sublexical phonology to orthography conversion
processes. In addition to numerous phonologically plausible errors (PP
Es), ML produces many context errors and grapheme substitutions, indic
ating that conversion processes are also impaired. Interestingly, most
of the errors produced on consonants consist of substitutions of lett
ers corresponding to voiced phonemes with letters corresponding to unv
oiced ones and vice-versa-a phenomenon which is much more frequent in
written than in oral spelling. We conclude that conversion processes r
epresent correspondences between graphemes and phonological features r
ather than between graphemes and phonemes.