ADHD have a parent or sibling with similar problems . There is the suggestion that these children inherit a type of nervous system which makes them prone to learning disabilities (Nussbaum , 1990 . Data from family risk , adoption , and twin research are supportive of this assertion (Braswell , 1991 . However , recent research has indicated that ADHD and learning disabilities are transmitted independently in families and that their occurrence is due to non-random mating (Milberger et al , 1995 . In looking at probands of parents...











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