I took a professional IQ test at a hospital a couple years back. I did a lot better than the first time, with an increase in spatial skills and thinking speed; the neurologist told me that this was likely due to my "improved clinical status," i.e. taking anti-seizure pills. One thing about the results I don't understand is that, although I scored 100% on the problem-solving questions, but still had trouble on the mental flexibility test. Isn't mental flexibility required for problem solving? What does it mean, exactly?