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Scientists Find a Subtle Clue to ADHD Hidden in The Eyes : ScienceAlert (opens in a new tab)

sciencealert.com · 2026-09-13

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The source study was found, but the study's evidence could not be profiled, so these claims couldn't be checked.

Claim 1 of 6Not checkedA new study suggests the rhythm of pupil changes may be subtly different in children with ADHD.View evidenceHide evidence

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The source study was found, but this claim couldn't be checked against it.

Claim 2 of 6Not checkedThe researchers reanalyzed existing eye-tracking data from 50 children aged 10 to 12 in Chile, including 28 with combined-type ADHD and 22 without a neurodevelopmental diagnosis.View evidenceHide evidence

As stated50 children; 28 ADHD, 22 controls

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The source study was found, but this claim couldn't be checked against it.

Claim 3 of 6Not checkedAfter accounting for age, IQ, and task difficulty, the model estimated about 23 percent greater trial-to-trial variability in pupil responses in unmedicated children with ADHD than in controls.View evidenceHide evidence

As statedabout 23 percent greater

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The source study was found, but this claim couldn't be checked against it.

Claim 4 of 6Not checkedAmong the unmedicated children with ADHD, greater pupil variability was associated with lower task accuracy.View evidenceHide evidence

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The source study was found, but this claim couldn't be checked against it.

Claim 5 of 6Not checkedIn the 17 children with ADHD who were tested both off and on methylphenidate, medication was associated with stronger pupil responses, less fluctuation between rounds, and a response pattern more like the control group.View evidenceHide evidence

As stated17 children

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The source study was found, but this claim couldn't be checked against it.

Claim 6 of 6Not checkedThe researchers and article caution that pupil size is an indirect signal, the study was small and based on existing data, and it is too early to consider pupil measurements a clinical diagnostic tool.View evidenceHide evidence

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Trial-level pupil dynamics reflect attention-related variability and medication-associated modulation in ADHD

Scientific Reports · 2026

Source record (opens in a new tab)

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Papers considered

The selected paper, plus nearby candidates.

Crossref, PubMed, Europe PMC · 16 candidate papers

Selected

Trial-level pupil dynamics reflect attention-related variability and medication-associated modulation in ADHD

Scientific Reports · 2026 · Crossref

Source (opens in a new tab)
Candidate

Working memory in children with attention-deficit/hyperactivity disorder (ADHD): the impact of methylphenidate (MPH).

Http://isrctn.org/> · 2012 · Crossref

Source (opens in a new tab)

And 10 more candidates considered.