Fascinating subject. Much more is address in Iain Mc Gilchrist's book<p>"The Master and his Emissary : the divided brain and the making of the western world"<p><a href="http://iainmcgilchrist.com/" rel="nofollow">http://iainmcgilchrist.com/</a><p>ps: put short, the book explains how pop psychology belief that left is maths and right is arts (you get the idea), was wrong, and yet.. there is a physiologically noticable difference as well as observable differences in how each hemispheres processes reality. In short, each hemisphere attends to the world with a different kind of attention, left is narrow and focused for what we commonly see as intellectual acvitivites, left deals with a map of the world. Right hemispheres takes the world as one whole, it's broad attention required to survive in our environment, but it's also necessary for empathy, etc. The book then tries to show how the over relianceo n our left hemisphere in today's world has roots in the last few centuries, and that perhaps it is not in our best interest. BOTH hemispheres are always needed, but we are increasingly acting in the world from the left hemisphere (hence the book title "the master and his emissary").