Placebo Ritalin 10mg Ritalin 17.5 mg Adderall 7.5mg Adderall 12.5mg 47 96 37 57 84 20 75 83 71 105 34 57 76 85 83 60 44 43 92 92 28 83 87 75 74 72 69 62 55 92 25 57 99 73 64