Research suggests that piano training for 3 year old children does improve temporal spatial reasoning ability. (TEN MOS. NEVER TOO EARLY TO START)
Those receiving piano lessons scored on the average 34% better on tests that involved temporal spatial reasoning.
Frankly, I would like to see a room of pianos installed in the early elementary grades rather than a room of computers!
Here are two excellent references on the usefulness or danger of having young children use computers:
Failure to Communicate--How Computers Affect Our Childrenās Minds--and What We Can Do About It, by Jane M. Healy, (Simon & Schuster, 1998.
Also see Endangered Minds Why Children Donāt Think and What We Can Do About It, by Jane M. Healy, (Simon & Schuster, 1990;