Treatment of ADDH in mentally retarded children: a preliminary study.

The use of CNS stimulant medication for the treatment of attention deficit disorder with hyperactivity (ADDH) in subnormal intelligence children remains controversial, and the majority of the literature does not support the use of CNS stimulants in these children, although the choice of dependent variables and research designs may have contributed to this outcome. A single case research design was used to assess the effectiveness of CNS stimulant medication (methylphenidate and dextroamphetamine) in three subnormal intelligence children with ADDH, using excessive movement and on-task behaviors as dependent variables. The results and implications for future research are discussed.