Temporal processing in speech perception of dyslexics.

  • Rosario Ortiz Universidad de La Laguna Campus de Guajara S/N 38071 La Laguna (Tenerife)
  • Adelina Estévez Universidad de La Laguna
  • Mercedes Muñetón Universidad de Antioquia
Keywords: Dyslexia, speech perception, temporal processing, rapid auditory processing, phonological deficit.

Abstract

Numerous studies show that a phonological deficit causes dyslexia, but the origin of this deficit remains a controversial issue. The present study examines whether perceptual phonological deficit in dyslexics can be explained by a temporal processing deficit with a design that controls the demands of the task and linguistic complexity and temporal contrasts between speech sounds. Thirteen dyslexics with phonological deficits (9-11 years) and 13 age-matched normal readers were assessed on tasks of temporal order judgment tasks (TOJ) and same-different discrimination tasks (I-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 versus discrimination tasks). Dyslexic’s children showed lower performance than normal readers in both pairs of syllables. The performance of dyslexics in the TOJ task was significantly lower than controls but no differences between groups in the same-different task were found. The findings are discussed in terms of temporal processing problems in speech perception in dyslexic children.

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Author Biographies

Rosario Ortiz, Universidad de La Laguna Campus de Guajara S/N 38071 La Laguna (Tenerife)
Profesora Titular del Departamento de Psicología Evolutiva y de la Educación
Adelina Estévez, Universidad de La Laguna
Profesora Titular de Psicología Cognitiva, Social y Organizacional
Mercedes Muñetón, Universidad de Antioquia
Profesora del Departamento de Lingüística y Literatura
Published
08-04-2014
How to Cite
Ortiz, R., Estévez, A., & Muñetón, M. (2014). Temporal processing in speech perception of dyslexics. Anales De Psicología / Annals of Psychology, 30(2), 716-724. https://doi.org/10.6018/analesps.30.2.151261
Section
Cognitive Psychology