Cognitive scientists will tell us that interrupting the visual flow if information is a significant determent to learning. Looking from the score to your hands and back to the score breaks up the information flow into your memory, creating a garbled mess. It is critical for the mastery of playing, that the fingers and arms learn to judge distances without the aid of the eyes. Make the mistakes and learn from them, but do not let the eyes become the crutch of the hands.
Andrew Remillard
President
ANRPiano.com
Going back to piano as an adult, with only a year and a half of lessons when I was 21, I am finding these very helpful. Thank you.