Related Experiment Video
Updated: Sep 20, 2026
Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos
Published on: December 7, 2018
[Exploratory eye movement in children with ADHD]
Li Sun1, Yufeng Wang, Yonghua Han
1Mental Health Institute, Peking University, Beijing 100083, China.
Insights
Children with Attention-Deficit/Hyperactivity Disorder (ADHD) exhibit distinct eye movement patterns, including fewer fixations and longer scans. These findings suggest potential executive function deficits in ADHD.
Area of Science:
- Ophthalmology
- Neuroscience
- Developmental Psychology
Context:
- Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder.
- Understanding the visual attention characteristics in ADHD is crucial for diagnosis and intervention.
- Previous research has indicated differences in visual processing, but specific eye movement patterns require further elucidation.
Purpose:
- To investigate and characterize the exploratory eye movement patterns in children diagnosed with ADHD.
- To compare the quantitative measures of eye movement (fixations, scan lengths) between ADHD and typically developing children.
- To assess differences in cognitive and responsive search strategies during visual exploration.
Summary:
- Utilizing an eye-mark recorder, researchers compared eye movements of 33 children with ADHD to 33 age- and sex-matched controls.
- ADHD children demonstrated significantly fewer eye fixations and longer mean eye scanning lengths compared to controls.
- Furthermore, ADHD participants exhibited lower responsive search scores and a positive D value, contrasting with the negative D value in controls.
Impact:
- The observed differences in eye movement patterns, specifically reduced fixation frequency and increased scanning length, may serve as objective biomarkers for executive dysfunction in ADHD.
- These findings contribute to a deeper understanding of the visual-behavioral phenotype of ADHD.
- This research could inform the development of novel diagnostic tools and targeted interventions for ADHD.
Objective:
To explore the character of the exploratory eye movement in ADHD children.
Methods:
The eye mark recorder (model IV) was used to record the eye movements in 33 ADHD children and 33 normal controls matched by age and sex, using t-test to compare the differences of the numbers of eye fixations, total eye scanning lengths, mean eye scanning lengths, cognitive search scores, responsive search scores and D values between the two groups.
Results:
ADHD children showed significantly fewer frequent numbers of eye fixations and longer mean eye scanning lengths than the normal controls. The responsive search score of ADHD children was significantly lower than that of the control group. ADHD children had a positive D value and the normal controls had a negative D value.
Conclusion:
ADHD children had fewer frequent numbers of eye fixation, longer mean eye scanning length and lower responsive search score than the normal controls, which may be the evidence of executive dysfunctions.
