Running Head: ADHD ON INTELLIGENCE Social and Bio-genetic Influences of Attention-Deficit Hyperactivity Disorder The subject of Attention-Deficit Hyperactivity Disorder (ADHD) has undergone intense research in the past decade. Much of this is rooted in the fact that approximately 5% of children are affected with the disorder. Children with ADHD are identified as having increased behavioral difficulties because of excessive motor activities, poor self regulation and inattentiveness (Dulkan et al., 1997). It has been found that as many as 30% of children inflicted with ADHD have learning disabilities with academic underachievem