What the authors completely forgot to measure or even so much as discuss is the effect of participants physical well-being on performance when under the influen

What the authors completely forgot to measure or even so much as discuss is the effect of participants physical well-being on performance when under the influence of these drugs. They solely focus on the patients cardiac profile, I'm assuming for safety as these drugs can raise blood pressure quite a bit. Also, the sample size is strikingly small for a 4 cohort study on the effects of a drug on behavior (n = 30, 17 males, 23 females, but subdivided into 4 groups). Performance enhancing drugs can have a myriad of effects on physical well being. The amount dispensed to participants was at least for Ritalin strikingly high. 30mg is a dose you get after at least 1-2 months of raising the dosage from 10mg, and that' the _retarded_ pill. If these were unretarded tablets, no doubt the participants must have felt completely wired up. The results look to me as if you drugged a bunch of people, told them to do something and they performed worse, but not much worse, probably because they were complaining of side effects. I know that's a polemic interpretation of the results, but I feel like I'm entitled to it, given the authors one sided discussion.