Effects of methylphenidate treatment in children with mental retardation and ADHD: individual variation in medication response.

Objective: Individual variation in cognitive and behavioral response to methylphenidate (MPH) was investigated in children with mental retardation and attention-deficit/hyperactivity disorder.

Method: Twenty-four children (mean age 10.9 years, SD = 2.

Treatment effects of methylphenidate on cognitive functioning in children with mental retardation and ADHD.

Objective: Cognitive effects of stimulant medication were investigated in children with mental retardation (MR) and attention-deficit/hyperactivity disorder (ADHD).

Method: Performance on tasks tapping sustained attention, visual and auditory selective attention, inhibition, and immediate memory was assessed for 24 children (mean age 10.9 years) during a placebo-controlled, double-blind, crossover treatment trial with 0.

Treatment effects of methylphenidate on behavioral adjustment in children with mental retardation and ADHD.

Objective: The effects of stimulant medication treatment were investigated in children with mental retardation (MR) and attention-deficit/hyperactivity disorder (ADHD).

Method: Parent and teacher behavioral ratings and reports of side effects were obtained for children (N = 24, mean age = 10.9 years, SD = 2.