For over a hundred years, psychologists and human biologists have been engaged in an often heated debate as to whether 'heredity' or 'environment' should be viewed as the determining factor in the creation of the human personality. For teachers and educationists, the discussion has tended to focus on how the human mind functions and intellectual powers develop. The controversy is often simply expressed in terms of 'nature' versus 'nurture, ' with some scientists declaring that human beings are a product of a transaction between the two. To many, such enquiry and speculation is little...