EVALUATION OF PHARMACOLOGICAL TREATMENT OF IMPULSIVITY IN CHILDREN WITH ATTENTION DEFICIT HYPERACTIVITY DISORDER

We used an assessment that involved competing reinforcer dimensions in a concurrent‐schedules arrangement to examine the effects of stimulant medication on impulsivity (i.e., sensitivity of choices to reinforcer immediacy relative to rate, quality, and effort) with 4 students with attention deficit hyperactivity disorder. The assessments were administered in the context of a double‐blind, placebo‐controlled, counterbalanced reversal design. Reinforcer immediacy was the most influential dimension for 3 of the students and the second most influential dimension for 1 of the students across placebo and medication conditions; medication did not affect these sensitivities.