Evidence for state-dependent learning has been found in children with hyperactivity taking the drug methylphenidate, a drug often prescribed for treatment of ADHD symptoms, more commonly known as Ritalin or Concerta.[1] Children with hyperactivity taking this drug during periods of learning better retained that information during subsequent periods of methylphenidate use, illustrating the effectiveness of methylphenidate in facilitating learning in children diagnosed with hyperactive disorders.[8] However, this state-dependent learning effect of stimulant medication applies only to children diagnosed with hyperactivity.