A group of researchers in Germany and Sweden recruited 39 competitive male chess players, who had an average IQ of 127 and an average chess Elo rating of about 1700 (an above-average rating in the system used to determine serious players’ skill level). They divided the group to test their performance after consuming either 200 mg of modafinil, 20 mg of ritalin, 200 mg of caffeine, or a placebo.

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A growing student population has been using them as “study” drugs – that help them stay up all night and concentrate. According to a 2007 National Institutes of Health (NIH) study, abuse of nonmedical prescription drugs among college students, such as ADHD meds, increased from 8.3 percent in 1996 to 14.6 percent in 2006

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Who wouldn’t be tempted by a drug that might make it easier to keep up in a world that runs at overwhelming speed? Evidently, many people agree. The proportion of Americans using Adderall, and other “study drugs” like Ritalin and Vyvanse, is increasing rapidly

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