Are auditory and visual processing deficits related to developmental dyslexia?
Related Experiment Video
Updated: May 24, 2026

Assessing Dyslexia at Six Year of Age
Published on: May 1, 2020
George K Georgiou1, Timothy C Papadopoulos, Elena Zarouna
1Department of Educational Psychology, University of Alberta, Edmonton, Alberta, Canada. georgiou@ualberta.ca
Abstract:
The purpose of this study was to examine if children with dyslexia learning to read a consistent orthography (Greek) experience auditory and visual processing deficits and if these deficits are associated with phonological awareness, rapid naming speed and orthographic processing. We administered measures of general cognitive ability, phonological awareness, orthographic processing, short-term memory, rapid automatized naming, auditory and visual processing, and reading fluency to 21 Grade 6 children with dyslexia, 21 chronological age-matched controls and 20 Grade 3 reading age-matched controls. The results indicated that the children with dyslexia did not experience auditory processing deficits, but about half of them showed visual processing deficits. Both orthographic processing and rapid automatized naming deficits were associated with dyslexia in our sample, but it is less clear that they were associated with visual processing deficits.
Related Concept Videos
Learning Disabilities
Dyslexia
Dyslexia is a...
Language and Cognition
Information Processing Approach
Visual Agnosia
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.

