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BACKGROUND The Inattention/Overactivity/Impulsiveness (I/OA) behavioural cluster diagnostic of ADHD is recognized as a characteristic outcome of early institutional care. METHODS We compared the symptom and neuropsychological profiles of children with a history of I/OA and early severe deprivation (D-I/OA: n=13) with standard clinical ADHD cases (S-ADHD;(More)
There has been much interest in the genetics of attention deficit hyperactivity disorder and molecular genetic studies are now underway. The success of genetic studies will depend on how well the phenotype is defined. Twin studies using parent and teacher rated questionnaires or interviews all appear to yield highly heritable measures. Nevertheless, there(More)
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