Related Experiment Video
Updated: Jan 29, 2026
05:54
Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
Published on: October 18, 2018
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An In-Depth Investigation of Eye Movement Profile of Dyslexic Readers Using a Standardized Text-Reading Aloud Task in
Antonin Rossier-Bisaillon1,2,3,4, Julie Robidoux1,2,3,4, Brigitte Stanké1,2,3
1École d'orthophonie et d'audiologie, Université de Montréal, 7077, Avenue du Parc, Local 3001-1, Montréal, QC H3N 1X7, Canada.
Behavioral Sciences (Basel, Switzerland)
|January 28, 2026
Summary
Adults with dyslexia rely on decoding, impacting oral reading. Eye-tracking and eye-voice span (EVS) reveal slower reading, more errors, and disrupted coordination due to this heavy reliance on sublexical decoding.
Area of Science:
- Cognitive psychology
- Neuroscience
- Developmental psychology
Background:
- Eye-movement research in dyslexia typically studies silent reading.
- Oral reading is crucial for dyslexia diagnosis.
- Combining eye-tracking with oral reading provides deeper insights into dyslexia.
Purpose of the Study:
- To investigate the reading processes in adults with dyslexia during oral reading.
- To analyze eye movement dynamics and eye-voice span (EVS) in relation to psycholinguistic factors.
- To identify underlying mechanisms contributing to reading difficulties in dyslexia.
Main Methods:
- Eye-tracking and oral reading of a diagnostic text in French were used.
- 10 adults with dyslexia and 14 controls participated.
- Analysis included fixation patterns and EVS measures, examining word length and frequency effects.
Main Results:
- Adults with dyslexia exhibited slower reading speeds and increased errors compared to controls.
- Atypical fixation patterns were observed, including persistent word length effects and reduced lexical frequency effects.
- Diminished and unstable eye-voice span (EVS) measures were found in the dyslexia group.
Conclusions:
- Findings suggest adults with dyslexia heavily depend on sublexical decoding during oral reading.
- This reliance creates a processing bottleneck, leading to slower reading and disrupted eye-voice coordination.
- The study highlights the interplay between decoding strategies, processing speed, and reading fluency in dyslexia.
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