Introduction:

What we know about the human brain is very recent. More progress has been made in the last 15years than in all previous human history. As late as the 18thcentury, there was general agreement that the brain was involved in thinking although how it functioned was not clear!

Today's scientists agree that we use both sides of our brain for most thinking and that each hemisphere or half does specialize in certain kinds of knowledge. Unless the brain is damaged, no one is completely left or right brained -rather, left and right brain are a metaphor for different kinds of thinking -disciplined or free.