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Of 6571 children with gaze data, 3043 whose caregivers completed the ADHD Rating Scale (ADHD\u2010RS) were included. Social gaze\u2014defined as fixation on the eyes in human\u2010face stimuli and on people in people\u2013geometry stimuli\u2014was measured using Gazefinder\u00ae. Percentile scores for inattention and hyperactivity\u2013impulsivity were analyzed separately for boys and girls using generalized linear models.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In boys, shorter gaze fixation on social information at age 4 was significantly associated with higher inattention and hyperactivity\u2013impulsivity percentiles at age 8. In girls, no significant associations were observed in the primary complete\u2010case analyses after full adjustment; however, significant associations for the small window stimulus emerged after inverse\u2010probability weighting.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Reduced social gaze at age 4, measured using an eye\u2010tracking system originally developed for ASD, was associated with later inattention and hyperactivity\u2013impulsivity symptoms. These findings suggest that early alterations in social gaze may represent a developmental characteristic associated with broader neurodevelopmental vulnerability and later behavioral symptoms, including inattention and hyperactivity\u2013impulsivity.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/pcn5.70380","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T10:36:59Z","timestamp":1784803019000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Early social gaze fixation and later inattention and hyperactivity\u2013impulsivity symptoms in children: A longitudinal population\u2010based cohort study"],"prefix":"10.1002","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4871-8455","authenticated-orcid":false,"given":"Masatsugu","family":"Orui","sequence":"first","affiliation":[{"name":"International Research, Institute of Disaster Science Tohoku University 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