Related Experiment Video
Updated: Aug 18, 2026

Assessing Dyslexia at Six Year of Age
Published on: May 1, 2020
The categorical distinction of vowel and consonant representations: evidence from dysgraphia
Gabriele Miceli1, Rita Capasso, Barbara Benvegnù
1Dipartimento di Neuroscienze, Università Cattolica, Rome, Italy. g.miceli@mclink.it
Abstract:
Subject GSI presents with a graphemic buffer deficit following a massive left fronto-parietal lesion. His errors involved essentially only consonants (98.2%). However, he always spelled correctly the first consonant in a string, and produced steadily increasing numbers of errors on the following consonants, while always spelling all the vowels in the target correctly. The pattern of performance observed in this subject provides strong evidence for the separate (categorical) representation of consonants and vowels, and suggests that working memory interacts with independent consonant and vowel representations in spelling.
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