I can see how it would possibly help focus on how, you would play out the race in your head if, it was a time trial but what about with bunches.
I completely understand the power of mind over matter, as I had managed to psych myself out of pain during races as I was getting close to peak ability so I am not doubting it's use. After all, the difference between the elite and mere mortals is the ability to focus and become single minded in you approach to training and competing. 
http://www.neurotopia.com/
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