Key Takeaways
Extended Takeaways
- This home-based intervention was brief and structured—3 weeks, 3 times/week for 30 minutes—yet the eye-tracker group improved on objective measures while the mouse version of the same game did not, suggesting that gaze-contingent control rather than simple game exposure drove the effect.
- The strongest signal was in oculomotor control: on the frog task, the eye-tracker group showed reduced impulsivity (P = .0067), fewer fixations (P < .01), longer fixation duration (P < .01), and faster reaction time (P < .05), a pattern consistent with better sustained fixation and saccadic suppression.
- Not all ADHD-related metrics changed. Probability of ADHD, severity of ADHD, hyperactivity, and errors in the frog task were not different between groups, which suggests the training may preferentially affect attentional control processes rather than broader diagnostic markers.
- Benefits extended beyond the training-like task to word recognition performance: in the eye-tracker group, reaction time improved for both short words (P < .01) and long words (P < .01), while the mouse group showed increased reaction time for short words (P < .05) and no improvement for long words.
- Comorbid dyslexia and age did not significantly alter the main outcomes in this small sample, but acceptability did vary by age: 78% of children < 12 years of age enjoyed the game, whereas 50% of children ≥ 12 years of age did not enjoy it and 40% had no specific opinion, which may matter when selecting digital interventions for older youth.
- Interpret results cautiously for reading-related outcomes because the groups differed at baseline on short-word fixation measures, a limitation the authors note could have amplified the observed posttraining effect on that task.
