Frequently Asked Questions

The eye-tracking version of RECOGNeyes was associated with improved objective measures of attention and oculomotor control in children with ADHD, while the mouse version of the same game was not. After 3 weeks of home-based training, the eye-tracker group improved on impulsivity in the frog task (P = .0067), reaction time in the frog task (posttest faster than mouse group, P < .0001; pretest to posttest improvement within eye-tracker group, P < .05), and fixation control, including fewer fixations and longer fixation duration. In the word recognition task, the eye-tracker group also showed faster reaction times for short and long words and changes in fixation patterns consistent with improved visual attention control.

The intervention was a 3-week home-based training program in which children played RECOGNeyes 3 times per week for 30 minutes per session. The study included 28 children aged 815 years with DSM-5 ADHD who were randomly divided into an eye-tracker group or an age-matched control group that played the same game with a mouse. The only difference between groups was the game input methodeye movements versus mouse movements.

Yes. In the frog task, impulsivity improved significantly from pretest to posttest in the eye-tracker group (P = .0067), while the mouse group did not show a significant change (P = .3349). The groups did not differ at baseline on impulsivity (P = .6585), which supports that the posttraining change was seen specifically in the eye-tracker condition.

Yes. In the frog task, the eye-tracker group responded faster after training, with significant group differences (F1,665 = 11.69, P = .0007) and a significant group-by-time interaction (F1,665 = 8.465, P = .0037). Post hoc analysis showed that the eye-tracker group was faster than the mouse group at posttest (P < .0001), and only the eye-tracker group improved from pretest to posttest (P < .05).

In the word recognition task, reaction time also improved in the eye-tracker group for both short and long words. For short words, the eye-tracker group improved from pretest to posttest (P < .01), whereas the mouse group became slower (P < .05); for long words, the eye-tracker group improved (P < .01) and the mouse group did not.

The eye-tracker group showed fixation changes consistent with better gaze control. In the frog task, the number of fixations decreased after training in the eye-tracker group (P < .01) but not in the mouse group, and the eye-tracker group had fewer fixations than the mouse group at posttest (P < .01). Fixation duration in the frog task also increased in the eye-tracker group from pretest to posttest (P < .01), while the mouse group did not improve.

In the word recognition task, the eye-tracker group had fewer fixations on short words at posttest than at pretest (P < .05) and increased fixation duration on short words (P < .01). The authors interpreted these changes as improved control of the visual attention system.

No. The study did not find group differences for several broader diagnostic or symptom-related measures in the frog task, including probability of ADHD (F1,58 = 0.065, P = .799), severity of ADHD (F1,58 = 0.5, P = .482), hyperactivity (F1,58 = 0.643, P = .436), or errors such as commissions and omissions (F1,58 = 1.832, P = .181). The benefits were concentrated in impulsivity, reaction time, and fixation-based measures rather than all ADHD-related metrics.

The findings suggest the benefit was specific to the gaze-contingent eye-tracking version rather than simple exposure to the game. Both groups played RECOGNeyes for the same duration and on the same schedule, but the mouse group generally did not improve on impulsivity, frog-task fixation control, or frog-task reaction time. The authors concluded that training the oculomotor system with real-time feedback on eye position appeared to be a critical component.

No significant effect of age or comorbid dyslexia was found on the main outcomes analyzed. The study reported no significant differences due to comorbid dyslexia for impulsivity, frog-task reaction time, word-recognition reaction time, number of fixations in the frog task, or number of fixations in the word recognition task. Age groups younger than 12 years and 12 years or older also did not significantly differ on those main outcomes.

Acceptability varied by age. Among children younger than 12 years, 78% said they enjoyed the game, and many rated the difficulty (66%) and challenge (44%) as appropriate. Among children aged 12 years or older, 50% did not enjoy the game and 40% had no specific opinion about enjoyability; 60% rated it as not difficult and 60% as not challenging.

The main limitations were the small sample, the short training period, and baseline differences on some reading-task fixation measures. The study included 28 participants and lasted only 3 weeks, so the authors stated that larger and longer longitudinal studies are needed. They also noted that the experimental and control groups differed at baseline in the number and duration of fixations for the short-word task, which may have enhanced the observed effect on that outcome.

The authors state that RECOGNeyes might be used as an alternative to pharmacologic therapy, but the study only showed improvement in selected objective attention and oculomotor measures over 3 weeks. It did not compare the game directly with medication and did not show change across all ADHD-related measures. The findings support potential therapeutic benefit, but the conclusion is appropriately cautious.