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Genetic risk for ADHD manifest in brain structure in childhood -- ScienceDaily

The analysis showed that morphological differences in the caudate nucleus could, in part, explain the association between genetic risk for ADHD and attention problems in boys; however, this association was not observed in girls. "ADHD is more prevalent among boys than girls and the reasons for this difference are still being investigated," explains Silvia Alemany. "And our findings suggest that the genetic variants associated with ADHD may act differently in the brains of boys and girls."