Objective: To characterize the size and course of placebo response in attention-deficit/hyperactivity disorder (ADHD), with informant and moderator effects, and illustrate its importance by comparison to Multimodal Treatment Study of ADHD (MTA) 3-month data. Methods: In two randomized clinical trials parents and teachers rated DSM-IV ADHD symptoms (Sx) on pill placebo at baseline (BL), 8, 12, and 16 weeks for 57 children age 5-12 with ADHD (25 inattentive, 32 combined type) and on an intense…
