University of Wisconsin-Madison Study Pinpoints Effects of Different Doses of an ADHD Drug; Finds Higher Doses May Harm Learning
New research with monkeys sheds light on how the drug methylphenidate may affect learning and memory in children with attention deficit hyperactivity disorder. The results parallel a 1977 finding that a low dose of the drug boosted cognitive performance of children with ADHD, but a higher dose that reduced their hyperactivity also impaired their performance on a memory test.