Ok check this out, when I turned of the music for need for speed most wanted and repeated this out loud, "I am smart, I am confident," I magically did way better on pursuits as I was struggling for sometime.
Infact all that is required to be smarter, is to think you are smart. Thus by thinking Hexic makes you smarter, it does. But the samething can be accomplished by playing tapes when you sleep that whisper, "I am a genius, I was born to rule the world, I am very smart, my iq is 200." Over and over again. Every test would be a 100% after that, lol.