Abstract

Title: Temporal processing in speech perception of children with dyslexia. Abstract: Numerous studies show that a phonological deficit causes dys- lexia, but the origin of this deficit remains a controversial issue. The pre- sent study examines whether perceptual phonological deficit in children with dyslexia can be explained by a temporal processing deficit with a de- sign that controls the demands of the task and linguistic complexity and temporal of contrasts between speech sounds. Thirteen children with dys- lexia and phonological deficits (9-11 years) and 13 age-matched normal readers were assessed on temporal order judgment tasks (TOJ) and same- different discrimination tasks (S-D). The tasks are based on contrasts of the syllables / ba / -/da / and / fa/-/ la /. We analyze the effects of the complexity of the stimuli (similar versus no similar) and the task (temporal order judgment tasks versus discrimination tasks). The children with dys- lexia showed lower performance than the control group in both pairs of syllables. The performance of children with dyslexia in the TOJ tasks was significantly lower than the control group but no differences between groups in the S-D tasks were found. The findings are discussed in terms of temporal processing problems in speech perception in children with dys-

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