Article
Sex differences in genetic and environmental influences on DSM-III-R attention-deficit/hyperactivity disorder.
Journal of abnormal psychology - 1 Feb 1999
Rhee Soo Hyun, Waldman Irwin D, Hay David A, Levy Florence
Abstract excerpt
Approximately 5% of children are affected by attention-deficit/hyperactivity disorder (ADHD), and more boys are affected than girls. This study examined the magnitude of genetic and environmental influences on ADHD and several questions regarding sex differences in its prevalence and liability. The participants were 2,391 twin and sibling pairs from Australia, ages 3-18. ADHD symptoms in the general population...
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