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[SY-24-01]The earliest presentations of neurodevelopmental disorders

*Kenji J. Tsuchiya1,2 (1.Hamamatsu University School of Medicine, Research Center for Child Mental Development(Japan), 2.The University of Osaka, United Graduate School of Child Development(Japan))
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This study sought the earliest neurodevelopmental representations for ADHD and autism phenotypes using a representative birth cohort.
Neurodevelopmental suboptimalities in visual reception before age 1 and in both fine motor and receptive language between ages 1?2 were associated with the ADHD phenotype. Neurodevelopmental suboptimalities in gross motor before age 1 and in expressive language between ages 1.5 and 3 were associated with the autism phenotype. The earliest representations of ADHD and autism phenotypes can be found before age 1, cascading separate sets of neurodevelopmental suboptimalities.