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Updated: Aug 18, 2026

Decomposing the Variance in Reading Comprehension to Reveal the Unique and Common Effects of Language and Decoding
Published on: October 11, 2018
Dissociation of reading strategies: letter-by-letter reading in the native language and normal reading in the learned
H Kremin1, S Chomel-Guillaume, I Ferrand
1Hôpital de la Salpêtrière, Paris, France.
Abstract:
In letter-by-letter reading, which is typically observed in Dejerine's (1892) "pure alexia," oral reading seems to be mediated by the naming of the constituent letters of the printed sequence: reading time rises abnormally as a function of the number of letters of the target item. We describe a patient with fluent aphasia who showed the unusual pattern of letter-by-letter reading together with surface dyslexia in her native language (French) and apparently normal reading in the second, learned language (English). Thus, letter-by-letter reading should be considered as a description of a symptom rather than the consequence of a unique type of functional impairment.
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