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Published on: December 7, 2018
Children with Attention-deficit/Hyperactivity Disorder Show an Altered Eye Movement Pattern during Reading
Rubén Molina, Beatriz Redondo1, Jesús Vera1
1Department of Optics, Faculty of Sciences, University of Granada, Granada, Spain.
Insights
Children with Attention-Deficit/Hyperactivity Disorder (ADHD) exhibit distinct eye movement patterns during reading, including more fixations and regressions. These findings highlight differences in reading performance and inform strategies for improving reading skills in children with ADHD.
Area of Science:
- Ophthalmology
- Neuroscience
- Developmental Psychology
Background:
- Attention-Deficit/Hyperactivity Disorder (ADHD) is associated with oculomotor abnormalities.
- The specific eye movement patterns during reading in children with ADHD require further elucidation.
- Understanding these patterns is crucial for addressing reading difficulties in this population.
Purpose of the Study:
- To objectively compare the eye movement patterns during oral reading in nonmedicated children with pure ADHD and age-matched controls.
- To identify specific oculomotor differences associated with ADHD during reading tasks.
Main Methods:
- Forty-one children (21 with ADHD, 20 controls) participated.
- Participants were nonmedicated and within a similar age range (9.3 years).
- Eye movement patterns were recorded using the Visagraph Eye Movement recording system during standardized oral reading.
Main Results:
- Children with ADHD showed significantly more fixations, regressions, and saccades in return sweeps compared to controls.
- ADHD group exhibited longer reading times, lower reading rates, and lower grade-level equivalents.
- Statistical analyses confirmed significant differences with high Bayes factors, indicating robust findings.
Conclusions:
- Nonmedicated children with pure ADHD demonstrate an altered eye movement pattern during oral reading.
- These oculomotor differences are not attributable to comorbid conditions.
- Findings provide insights into the ADHD-reading performance link and can guide interventions to enhance reading skills.
Significance:
Attention-deficit/hyperactivity disorder (ADHD) is characterized by oculomotor abnormalities. However, the eye movement pattern of children with ADHD during reading has yet to be fully determined. This investigation provides novel insights into the altered eye movement pattern during oral reading of nonmedicated children with pure ADHD in comparison with age-matched controls.
Purpose:
The purpose of this study was to objectively compare the eye movement pattern during oral reading in a group of nonmedicated children with pure ADHD and an age-matched control group.
Methods:
Forty-one children, 21 children with pure ADHD (9.3 ± 2.2 years, 15 boys) and 20 control children (9.3 ± 2.5 years, 10 boys), orally read a standardized text according to their age while the eye movement pattern was objectively recorded using the Visagraph Eye Movement recording system.
Results:
The Bayesian statistical analyses revealed that children with ADHD exhibited a significantly higher number of fixations (Bayes factor 10 [BF10] = 3.39), regressions (BF10 = 9.97), saccades in return sweeps (BF10 = 4.63), and anomalies of fixations and regressions (BF10 = 3.66) compared with controls. In addition, children with ADHD significantly showed longer reading times (BF10 = 31.29), as well as lower reading rate (BF10 = 156.74) and grade-level equivalent (BF10 = 168.24) in comparison with controls.
Conclusions:
Our data showed that the nonmedicated children with pure ADHD have an altered eye movement pattern during oral reading when compared with controls, which cannot be attributable to any comorbid condition. The present outcomes may help to understand the link between ADHD and reading performance and design the most pertinent strategies to enhance the reading skills of this population.
